Saturday, December 26, 2020

Loki | Norse mythology

Loki is a god belonging to Norse mythology . He is the son of the giants Farbauti and Laufey and has two brothers, Helblindi and Býleistr, of whom little is known. In the eddas he is described as the "origin of all fraud" and he mixed freely with the gods, coming to be considered by Odin as his brother until the murder of Balder . After this, the Æsir captured him and tied him to three rocks. According to the prophecy he will free himself from his bonds to fight the gods in Ragnarök .

Despite many investigations, Loki's figure remains in darkness; there are no traces of a cult and its name does not appear in any toponymy. In religious terms, Loki is not a deity. Having no cult or followers (no evidence or reference to it has been found), he is rather a mythological being. Since it cannot be considered other than a giant. Today many neo-pagan groups that call themselves Lokeans worship him, which elevates him to the category of minor god. However, they are opposed by many other established pagan groups such as the Folkish. Some sources sometimes relate it to the Æsir;But this is probably due to his close relationship with Odin and the amount of time he spent with the gods compared to his own (which is why he is associated with Lugh , his parallel in the Celtic pantheon).

In continental Scandinavian languages ​​( Swedish , Norwegian and Danish ) his name is Loke (pronounced "luque"). Composer Richard Wagner introduced Loki under the Germanized name of Loge in his opera Das Rheingold There is a fire giant called Logi , which is why, due to its similarity in pronunciation, it is often confused with it and associated with fire.

According to some theories of scholars, Loki is conceived as the spirit of fire with all the potentially beneficial or harmful that it can be. However, it is possible that this view is a consequence of the linguistic confusion with logi "fire", since there is very little indication of this in myths, where Loki's role was mainly that of Odin's cunning counterpart or antagonist. .

In fact, there is a story in Gylfaginning in the Prose Edda of Snorri where Loki competed against a jotun called Logi in a duel eating food; and he loses, because when he finished, Logi had not only eaten the meat but also the bones and the plate. They then discover that Logi is actually the personification of fire and that it had acquired its appearance using magic.

Ström identifies Odin and Loki, even calling Loki "a hypostasis of Odin." Rübekeil suggests that both gods were originally identical, deriving from the Celtic , Lugus .

Ages

Names

Like Odin, although to a lesser extent, the skalds used many kenningar to refer to Loki, which is why he bears many names, such as: "Lying Blacksmith", "Shapeshifter", "Silver Tongue", "Cunning God", " Transformist "," The crafty one "," Sky traveler "," Skywalker "," Wizard of lies "," God of mischief "," God of bad luck "," God of Lies "And" God of Chaos ", among others.

Nature

The character of the con man is complex in nature and a master of deception. Loki is a figure of attenuated evil, rather suggested than existent, a kind of con artist among the gods due to his high intelligence. On some occasions with his tricks, tricks or jokes, he annoyed or embarrassed the gods and then helped them; like when he cut off Sif's hair and then replaced it or like when he was responsible for the kidnapping of Iðunn and her apples of youth but then returned her safely. Loki is an expert in shapeshifting (examples like transforming into salmon , horse , bird , fly , etc).

Stems

Loki is the father of numerous human creatures and monsters from Norse mythology. With Angrboda he had three children:

  • Fenrir , the giant wolf predestined to end Odin in Ragnarök .
  • Jörmundgander , the sea serpent predestined to end Thor.
  • Hela , the goddess of the realm of the dead.

Loki also married the goddess named Sigyn who bore him two children: Narfi and Váli (this Vali is not to be confused with the son of Odin and the giantess Rind ). To punish Loki for Balder's death, the gods transformed Vali into a rabid wolf which split Narfi's throat Narfi's viscera were used to bind Loki to Ragnarök.

Momentarily turned into a mare, with Svadilfari , the horse of the giant who built part of the walls of Asgard, he begat Sleipnir , the eight-legged horse that he would give to Odin.

A story in Hyndluljóð relates that after eating a half-roasted woman's heart, Loki gave birth to a monster whose name is not mentioned. This myth is not recorded in other sources.

Intrigues with the gods

Loki occasionally worked alongside the other gods. For example, he tricked the giant who built the walls around Asgard without being paid for his work, by distracting the giant's horse by transforming into a mare in heat. In this way she became the 'mother' of Odin's eight-legged horse, called Sleipnir.In another myth she has the dwarves compete with each other in a test of skills. This led to the dwarves making Odin's spear, Gungnir , Freyr's ship Skíðblaðnir, and Sif's golden wig. He also rescued Iðunn who had been kidnapped by the giant Þjazi . Finally in Þrymskviða , Loki succeeds, withThor by his side, retrieving the hammer Mjölnir after the giant Thrym stole it in order to ask Freyja for a wife in exchange (literally, he made Thor disguise himself as a woman).

Despite the fact that Loki was a great problem for the gods (he caused the death of Balder, the birth of Fenrir and other monsters that could eventually engulf the world ...), he provided them with the most precious items, from the hammer of Thor to flying ships, and these tools were of great help in helping the gods to defeat evil. He brings Ragnarök , but also provides them with the means to overcome it.

In Lokasenna Loki remembers the pact of friendship he had with Odin, which is not mentioned in other sources, but which is very likely since on several occasions they undertook adventures together.

Mantu þat, Óðinn,
er vit í ardaga
blendum blóði saman?
Ölvi bergja
lézktu eigi mundu,
nema okkr væri báðum borit.

Do you remember Odin,
the old days
when we mixed our blood?
So you promised
they wouldn't serve you beer
if there wasn't for both of you.

Poetic Edda - Lokasenna , stanza 5

Loki and the dwarves

One of Loki's many mischiefs consisted of cutting the hair of Sif , Thor's wife. The latter, enraged, caught Loki, who promised him that Sif would regain her golden hair. Loki went to the dwelling of the dwarves, located underground, to entrust the work to the sons of Ivaldi , who were considered the best craftsmen. .

Assassination of Balder

Balder had nightmares heralding his death and told the other gods about it. The goddess Frigg , his mother, traveled the world making him swear to all things that they would never harm her son. Hence, in meetings in the Thing , the gods amused themselves by throwing objects at him, since they knew that none could hurt him. When Loki found out about this he was enraged and went to talk to Frigg in the form of a woman, telling him what was happening in the Thing and asking him if he had made all things swear not to harm Balder. Frigg remembered that he hadn't thought it necessary to make the mistletoe swear, considering it harmless. Knowing this, Loki made a dart using a mistletoe branch, then went to the Thing and tricked Balder's blind brother, named Höðr , into throwing the dart at him, thus killing Balder. In an Evemerist version of the myth, completely differently related in Gesta Danorum , no mention is made of Loki and Balder is killed by Höðr with a stab wound.

Hela , the ruler of the underworld, made it a condition to return Balder that all things mourn his death. The gods found a giant named Thokk in a cave and begged her to shed tears so that they could return to Balder. The giant refused and was the only being who did not shed tears for the death of the god saying "let Hela keep what she has", thus preventing Balder from returning from hell. The gods suspected that the giant was actually Loki in disguise, which made them even more enraged.

Lokasenna

Lokasenna is one of the mythological poems of the Poetic Edda . It recounts a heated argument between Loki and the Æsir during a banquet held by Ægir , the god of the sea. In the poem, many facets of Loki's wickedness, insight, and betrayal are exposed. Jealous of Ægir's servant, Fimafeng , for the praise he received for how well he treated the guests, Loki was enraged and killed him. The gods threw him out of the banquet, but he returned and began to insult them by mocking their shortcomings. In turns the gods tried to calm him down, as it was against the rules of hospitality to generate disputes in the host's house, but Loki continued and only fled when Thor drew his hammer , Mjölnir and threatened him.

The work ends with the capture of Loki and his captivity, although it does not explain that the death of Balder was the cause for it; the latter is clearly mentioned in the Prose Edda .

Although if you read Evémero de Mesene ( Evémero of Messina ), there is the basis that Hoder killed Balder out of jealousy of Nana, which would distance Loki from the start of Ragnarök. This would demonstrate the ambiguity of the gods, who are close to men in human emotions and have intense feelings such as jealousy, and incite intrigue.- (The text of the fragments of Evémero, in addition to the fragments present in Ennius and Diodorus Siculus , is collected in No. 63 of Jacoby's monumental syloge , and in FGrH , 19572.)

Captivity and Ragnarök

The gods full of anger at the death of Balder began to search for him and Loki took refuge in a mountain. There he built a house with four doors to be able to watch all directions. Sometimes during the day it would transform into salmon and hide in the waterfalls of Fránangr. He thought of how they could catch him and wove a flax fishing net When he saw that the Æsir were nearby, since Odin had spotted him from Hliðskjálf , he burned the net, transformed into salmon and jumped into the river.

The gods found Loki's house and seeing the ashes of the fishing net, they began to weave one and headed for the river. There Loki evaded them by jumping over the net, but the gods divided into two groups to catch him. Loki when he was close to the sea decided to risk one more time and jump over the net, but this time Thor caught him by the tail.

They also caught the two children he had with Sigyn , Narfi and Váli (not to be confused with Vali , the son of Odin and Rind). The gods transformed Váli into a wolf that turned on his brother and killed him. They then used Narfi's viscera to bind Loki to three stone blocks, they turned the bindings into iron and Skaði He placed a viper on his head so that the venom from it dripped onto his face. Sigyn sits next to him and collects the snake's venom in a wooden bowl, but when it is full, he must throw the venom out, at which point the venom falls on Loki's face. The pain is so terrible that it twists causing earthquakes.His punishment will last until the twilight of the gods.

Balder's death is an event that would precipitate Ragnarök. Loki will be tied up until then. When Ragnarök finally arrives , Loki will break free by shaking the earth. You will sail to Vigrid on a ship that also carries Hela and all the inhabitants of Helheim They will advance over the Bifröst bridge and then it will break. They will address Vigrid the wolf Fenrir and the serpent Jörmungandr and then Loki and Hrymr with all the giants Hela's champions will also follow Loki; as well as the sons ofMuspell .

Once on the battlefield he will face Heimdall and neither of them will survive the encounter.

Kjóll ferr austan,
koma munu
Múspells of lög lýðir,
in Loki stýrir;
fara fíflmegir
með freka allir,
þeim er bróðir
Býleists í för.

From the east part, a boat ,
comes with the people of Muspell
on the waves
and Loki governs
there are witches
all with the wolf
and with them the brother
of býleistr up.

Poetic Edda - Gylfaginning , chapter 51

So you promised
they wouldn't serve you beer
if there wasn't for both of you.
- | Poetic Edda - Lokasenna , verse 5 |}

Loka Táttur

Not all folklore describes Loki as an evil being. An 18th century ballad , probably derived from a much older source in the Faroe Islands , titled Loka Táttur , describes Loki as a friend of man. When a thurs ( troll or giant) kidnaps a farmer's son, he and his wife raise their prayers to Odin to protect their son. Odin hides him in a wheat field, but the thurs find him. Odin rescues the son and returns him to the farm with his parents, saying that he has already hidden it. The concerned couple calls Hœnir, who hides the farmer's son in the feathers of a swan's neck, but again the thurs finds him. On the third day they beg Loki, who hides it among the flounder eggs. The thurs find him, but Loki had instructed the boy to run towards a boathouse. The giant's head is trapped there and Loki kills him by cutting off his leg and inserting a stick and stone into his stump to prevent him from regenerating. He then takes the boy and returns him to his house, where the farmer and his wife hug them both.

It is assumed that Loki's "evil" is actually only figurative, since the Norse do not consider him a villain, but rather an antagonist who caused difficulties for Wotan (Odhinn). It is believed that this "villainy" is imposed by the influence (rather than analogy) of a form of Manichaeism of the Christian religion through the writing of Snorri Sturlusson, so therefore Loki was not bad, but an ambiguous antagonist, when he transcribed it took as "opposite the main god". That is why it is wrongly viewed as bad, rather than ambiguous.

It is said who? ] that Loki represents the Ying and the Norse Yang in mythology.

Runic poem

Loki is mentioned in a runic poem of Norwegian origin written in Old Norse around the 13th century It is mentioned in connection with the Bjarkan rune , which in new futhark means birch .

Bjarkan's laufgrœnstr lime;
Loki far flærðar tima.

Birch has branches of green leaves;
Loki takes the time of deception.

Archaeological record

Snaptun stone

In the spring of 1950, a carved image of Loki in a bell-shaped forge stone was found on a beach near Snaptun, Denmark The image was carved around the year 1,000 from a soapstone stone. Loki is represented with curly mustaches and his lips with scar marks, the latter is what allows him to be identified since it refers to the story told in Skáldskaparmál , when Brok sews his lips. The stone is on display at the Moesgaard Museum near Aarhus , Denmark.

Kirby Stephen's Stone

In the church parish of the small town of Kirkby Stephen, in Cumbria ( England ), among several historical pieces is a stone block approximately one meter high with a figure with horns and chains on its arms and legs. The carved image dates from the 9th century and is one of the few surviving historical records of the period when Danish Vikings inhabited the area. The image on the stone has been identified with that of Loki, tied up after Balder's death. The representation of the horned figure may be an adaptation for Christian purposes.

Counterparts

Loki can be compared to Hermes , who deceived Apollo and who also went beyond his limits. In astrology, Mercury is precisely the planet associated with Loki, as well as the sign of Gemini It is important to understand that the astrological Mercury is intrinsically associated with language, with narrative discourse; in this sense, Loki could refer exclusively to the potential for fraud, lies and noise, and the underlying malice, that can exist in any communication process.

It has also been compared to Prometheus , who deceived and stole the gods and who was also tied to a rock and tormented by an animal (an eagle in this case) as punishment. It can also be compared to the Celtic god Lug who ended the life of his grandfather Balar , who is compared to Balder , in addition to the fact that he also does not have an end as a god. During the Viking was some considered him an evil deity similar to Saturn / Cronus , and called him Saeter. In Polynesian mythology his counterpart would be the scammer demigod Māui .

Other ways

  • Common form in Danish, Swedish and Norwegian: Loke
  • German form: Lohho, Loge (Richard Wagner)

Popular culture

Loki appears as the main villain in the comic book Thor from Marvel Comics He also appears in all of the Thor movies as the same villain and in the Avengers movie In all of them he is played by Tom Hiddleston .

In the TV series Supernatural , the Archangel Gabriel descends to earth after the fall of Lucifer. He himself claims to have undergone a makeover so that his siblings would not discover him; takes the form of Loki before the rest of the pagan gods (he had an affair with the goddess Kali), and of a Trickster for the Winchester brothers. Before falling dead at the hands of Lucifer, he was one of the most powerful beings in the series and the one who caused more "ridiculous" or "strange" problems for the protagonists, although his death was in part a necessary sacrifice for them to escape with Kali and learn to defeat his brother.

In the TV series Stargate , a scientist of the Asgard alien race named Loki was responsible for abductions of human beings on planet Earth to study them in search of a possible solution to the genetic problem of race. In 1985 the high council discovered him and took away his title, although as a rebel he continued with his investigations until he made a mistake and was discovered by SG1 and reported to the Supreme Commander Thor.

The movie The Mask is about a mask that is, in reality, the god Loki banished by Odin from Asgard and turned into a mask, causing whoever wears it to acquire supernatural powers.

In the video game Smite, Loki appears as one of the playable characters and is depicted as a stealthy assassin with deception abilities.

In the video game The Binding of Isaac, Loki appears as an enemy boss depicted as a red demon.

In the video game Warframe, Loki makes his appearance as a warframe (a playable character) and is a stealth character.

On the moon Io , the closest to Jupiter , is the Loki volcano, the most active in the Solar System,

The Laki volcano or Lakagígar (Laki craters) is a volcanic fissure located in southern Iceland , near the Eldgjá canyon and the small town of Kirkjubæjarklaustur .

In the Kenichi manga , there is a group of martial artists called Ragnarok, the fourth fist of the group represents Loki.

In the anime Matantei Loki Ragnarok , the protagonist is the Norse god in the guise of a 12-year-old boy.

In the anime / manga Boku Girl the protagonist Suzushiro Mizuki is turned into a girl because of Loki's magic.

In the second Saint Seiya film , The Great Battles of the Gods , Loki is one of the Warrior gods of Asgard under the orders of Dolbar, this film's main enemy. In the series spin-off, Saint Seiya Soul of Gold , Loki turns out to be the evil god behind the events that brought the 12 Golden Knights back to life in Asgard.

In Neil Gaiman's book American Gods , Shadow is the cellmate of a strange criminal named "Low Key Lyesmith," who is later revealed to be Loki.

In an episode of Hercules (1998 television series) this god appears.

In the third season of the anime High School DxD Born , this god appears as the main antagonist of the series.

In the video game God of War (2018) Atreus, the son of Kratos , is known as Loki, which gives birth to the mythical Norse god of mischief.

The YouTube channel Pascu y Rodri , in their group of songs entitled Destripando la Historia , dedicates one of their most viewed songs to narrating their story.

In the Yu-Gi-Oh! , "Loki, Lord of the Aesir" (whose original name is "Polar God Emperor Loki") is one of the available printed cards. In the anime series Yu-Gi-Oh! 5D's , is worn by Broder (whose original name is Brave), a member of Team Ragnarok.

In the short novel Loki: Historia de unchangeable , by Manuel Escutia, the life of the god of deception is treated taking into account the different versions of mythology.

The Sandman

In The Sandman , Loki is the god of Norse mythology, but he is temporarily released by Odin in the Mist Station story arc to help him convince Morpheus to hand over Lucifer's Hell to him and thus escape Ragnarok . Though unsuccessful , he deceives the Norse gods by turning the Japanese thunder god Susano O Nomikoto into an image of him, and replacing him to escape imprisonment from beneath the earth. This is discovered by Morpheus, who decides to make a pact with Loki to send a Dream to prison instead, freeing Susano.

Morpheus with this action intends that Loki be indebted to him, however, this causes Loki to turn against him in the events of The Benevolent , collaborating with Puck and the Furies to kidnap the baby from the metahuman Lyta Hall, which which would give this the motivation to become an avatar of the Furies and assassinate Morpheus.

However, before finishing murdering Daniel Hall, the Corinthian and Matthew the Raven find him. The Corinthian rescues Daniel and gouges out Loki's eyes, after which he will again be locked underground by Odin and Thor , to be tortured and patiently wait for Ragnarok .

Sirius

In connection with the association between Loki and fire, the brightest star in the earth's firmament, Sirius , was also called Lokabrenna , something like "Loki's torch."

Thursday, December 17, 2020

Comet Hyakutake

Comet Hyakutake

Comet Hyakutake , officially called C / 1996 B2 (Hyakutake), is a long-period comet discovered on January 30, 1996 by the Japanese amateur astronomer Yuji Hyakutake . In March 1996, the comet passed relatively close to the Earth (its approach was one of the closest approaches of comets to the Earth in the last 200 years). The comet was very bright and easily observed with the naked eye in the night sky, due to which it was named the " Big Comet of 1996" . For some time, comet Hyakutake eclipsed comet Hale - Bopp , which at that time was approaching the inner region Solar system .

The observation of Comet Hyakutake has led to several scientific discoveries. The most surprising for scientists was the first discovered X-ray emission from a comet, probably caused by the interaction of the ionized solar wind with neutral atoms in the comet's coma... In addition, the Ulysses spacecraft unexpectedly crossed the tail of comet Hyakutake at a distance of more than 500 million km from the nucleus .

Comet Hyakutake


Until the last passage of Comet Hyakutake through the solar system, its orbital period was 17,000 years, but after interacting with the gravitational field of the giant planets, it increased to 70,000 years or more.

Timeline

Opening

The comet was discovered on January 30, 1996 by the Japanese amateur astronomer Yuji Hyakutake . By that time, he had been searching for comets for several years, which largely determined his move to Kagoshima Prefecture for the darker sky of rural areas. His usual place of sighting was a mountain about 15 km from his home. To observe the starry sky, he used a powerful wide-angle astronomical binoculars with 6- inch objectives (150 mm ) Fujinon 25x150 MT-SX mounted on a mount .

This comet became the second in a row discovered by Hyakutake. He discovered the first, C / 1995 Y1on December 26, 1995 , but in the end it did not reach high brightness: it could only be observed through a telescope . Five weeks later, while observing C / 1995 Y1 and the surrounding space, he noticed another comet, just 4 ° from the part of the sky where he had previously found the first one . Recalling his condition at the time of the discovery of a new comet, Hyakutake wrote:

 

To be honest, I was a little confused. My reaction was somewhat difficult to understand, as I originally intended to travel [to my usual place] to take a picture of the first comet. I found the second comet in the same place as the first, near the constellations Libra and Hydra .

Hardly believing in his luck, Hyakutake announced the opening to the National Astronomical Observatory of Japan . On the same day, the discovery was confirmed by independent observers. At the time of detection, the comet was at a distance of about 2 AU. e. from the Sun , having an apparent magnitude of 11.0 and an angular diameter of 2.5-3 minutes . After its discovery, comet Hyakutake was found in the image taken on January 1, 1996 (that is, before it was discovered), when it was at a distance of 2.4 AU. e. from the Earth and had a brightness of 13.3 .

The first calculations of the comet's orbit, performed by the head of the Central Bureau of Astronomical Telegrams Brian Marsden on February 3 , showed that on March 25, 1996, the comet would pass approximately 0.1 AU. ie from the Earth . For comets, this is a very small distance: in the last century, only four "tailed wanderers" passed closer: C / 1983 H1 (IRAS - Araki - Alcoca) , 7P / Ponsa - Winnecke , 73P / Schwassmann - Wachmann and C / 1983 J1 (Sugano - Saigus - Fujikawa) .

At the beginning of 1996, bright comets had not appeared for almost 20 years: the last "Big" was Comet West (C / 1975 V1) . Since mid- 1995, astronomers have already anticipated the appearance of another comet, C / 1995 O1 (Hale-Bopp) , which was predicted to break this long "comet-free" period in 1997 . The discovery of comet Hyakutake gave reason to assume that it will outstrip Hale-Bopp and become the next in a series of bright comets, if only its activity continues .

Comets that first arrive in our system from the Oort cloud often "flash" brightly at first, but then their brilliance subsides as soon as their upper layer of volatiles evaporates. So, for example, it happened with the comet Kohoutek in 1973 : it was initially believed that it would be very bright, but the comet did not live up to the forecasts, reaching only moderate indicators . From the very beginning, orbital calculations showed that comet Hyakutake is not "new", but long-period : the last time it was in the solar system about 17,000 years ago, and it approached the Sun more than once ...These data indicated that the brightness of C / 1996 B2 would not change dramatically, and that the comet's appearance would be very memorable.

The passage of a comet past the Earth

By mid-February, the comet reached a brightness of 8.5 , and it became possible to observe it with small binoculars, and by the end of February, it could already be seen with the naked eye. Until mid-March, it was still not very noticeable, reaching only 4th magnitude and having a 5 ° tail. However, the closer the comet approached the Earth, the faster its brightness, coma diameter and tail length increased. So, if on March 13 the angular diameter of the C / 1996 B2 coma was estimated at 20 minutes, then on March 19 it exceeded 1 °, which is twice as large as the apparent diameter of the Moon . By March 24, thecomet had become one of the brightest objects in the night sky, and its tail was already 35 ° long. The comet was a remarkable bluish-green color.

On March 25, comet Hyakutake approached the Earth as close as possible (0.1018 AU = 15.2 million km) . The comet was moving so fast (about 50 km / s) that its movement could be seen in just a few minutes of observing the starry sky; in 30 minutes it covered a distance equal to the full diameter of the moon (0.5 °). Observers reported that its brightness is equal to 0th magnitude, and the length of the tail has grown to 80 ° (the absolute record for the apparent size of a comet's tail). Her coma , which by that time is almost at the zenith for observers of mid-northern latitudes , reached about 1.5-2 ° in diameter (that is, about 3-4 full diameters of the moon).Even with the naked eye, it was easy to see that the comet's head has a greenish color (a consequence of the strong emission of diatomic carbon C 2 ).

During the passage of the comet near the Earth, the inhabitants of the northern hemisphere had the opportunity to observe it all night, since, due to its large inclination, the visible trajectory of comet Hyakutake ran along the polar constellations . Such observation conditions are unusual for comets: the brightest comets of the 20th century were observed at twilight , and most of the other comets open near the Sun in the so-called "Everhart zone" .

Unlike other "Big" comets , in particular, the same comet Hale - Bopp , which appeared in the next 1997 , C / 1996 B2 became noticeable precisely because of its approach to the Earth, and not because of its size therefore, it was bright for only a few days. In addition, in some European countries (in particular, England) due to unfavorable weather conditions in March 1996, its observation was very difficult .

Perihelion and the path after it

After a close approach to the Earth, the comet's brightness dropped to 2nd magnitude, and stayed near this value near perihelion ( May 1, 1996 ), after which it continued to decline. In addition to the previously observed ionic tail, the comet has a dusty tail. True, now its proximity to the Sun made observation difficult. The study of the comet during its perihelion passage continued with the SOHO satellite , which at the same time recorded a large coronal mass ejection . The distance between the comet and the Sun at that time was 0.23 AU. ie

After passing the perihelion, comet Hyakutake quickly lost its brightness, and by the end of May it became inaccessible to the naked eye. Now the comet has moved to the southern hemisphere, but such extensive studies have not been carried out as before. The last known observation was made on November 2, 1996 .

Scientific results

Orbit

Comet Hyakutake's orbit has a number of features. In addition to the fact that the comet's trajectory allowed it to approach the Earth, another unusual fact was discovered: the comet's orbital plane has an inclination of 125 ° , that is, it is located almost perpendicular to the ecliptic plane . This fact, as well as the long period of the comet, indicate that it was formed in the Oort cloud , and not in the Kuiper belt .

The comet's original orbital period around the Sun was estimated at 17,000 years, but in 1996 the comet's orbit was heavily influenced by the gravity of the giant planets , and now estimates of the comet's return time range from 70,000 to 110,000 years. In this case, the point of maximum distance from the Sun ( aphelion ) is located at 4560 AU. e. (or 0.072 sv.g . )>.

The passage of a spacecraft through the tail of a comet

On May 1, 1996, an unexpected event occurred: the Ulysses research vehicle passed through the tail of comet Hyakutake . At this moment he was at a distance of 3.73 AU. e. from the Sun, and the angle of inclination to the ecliptic was about 45 °. No evidence of the meeting was found until 1998 . A group of astronomers studying archival data from Ulysses drew attention to a sharp increase in the level of protons , as well as changes in the strength and direction of the magnetic field around the spacecraft during flight . This meant that Ulysses crossed the trail of some object, it was assumed that comets.

In 2000, two independent groups of scientists began to find out what kind of object it was . The magnetic measurement group has been building on the fact that such changes in magnetic field are similar to phenomena thought to occur in comet ion tails. Finding no registered comets near Ulysses, the group expanded their search. She soon found out that on April 23, 1996, Hyakutake crossed the orbital plane of the device, being at a distance of 500 million km from it. Under the action of the solar wind at a speed of about 750 km / s, the tail displacement to the point of meeting with the spacecraft would take exactly 8 days.Based on Ulysses' data, it was also established that the source of the trace was in the plane of the orbit of comet Hyakutake .

At the same time, another group, working on data obtained from the Ulysses ion spectrometer, found a sharp jump in the ion level. The relatively high abundance of chemical elements meant that the source was definitely a comet . Thanks to the meeting with Ulysses, it was found that the length of the tail of this comet was at least 570 million km (3.8 AU). This is almost 2 times more than the previous record of 2 amu. e., belonging to the tail of the Big Comet in 1843 .

Composition

Observations made from Earth have revealed the presence of various compounds of hydrocarbons , nitrogen and sulfur , in particular, cyanide (HCN) and isocyanide (HNC) hydrogen, H CN, isocyanic acid (HNCO), carbon monoxide (CO), methyl alcohol ( CH 3 OH), formaldehyde (H 2 CO) , carbon monosulfide (CS), hydrogen sulfide (H 2 S) . For the first time organic gases were discovered for comets - ethane (C2 H 6 ) and methane (CH 4 ). Chemical analysis showed that the relative content of the latter was approximately equal. This indicates that the comet was born in interstellar space far from the Sun, whose radiation would have evaporated these volatile compounds . Comet Hyakutake's ice masses must have formed at temperatures of 20 K or less. Most likely, the medium “native” for the comet was denser than an ordinary interstellar cloud .

The deuterium content of the comet's ice was determined by spectroscopic methods . It was found that the D / H (deuterium to hydrogen ) ratio is approximately 3.0⋅10 , while in the oceans on Earth it is only 1.6⋅10 . There is a theory according to which the main source of water on Earth was comets that fell on the planet , but a similar higher D / H ratio found in comets Hyakutake, Hale-Bopp and Halley gives reason to doubt it ...

X-rays

One of the biggest surprises from Comet Hyakutake was very strong X-rays . It was recorded by the ROSAT apparatus on March 27, 1996 . This was the first time that comets had such radiation, but astronomers soon became convinced that almost every comet had it. The strongest radiation came from the comet's head on the "sunny" side.

It is assumed that the cause of this phenomenon is a combination of two processes. An important role is played by the interaction between charged particles of the solar wind and matter evaporating from the comet's nucleus . Although the phenomenon of reflection of solar X-rays has been observed in other space objects (for example, the Moon ), simple calculations show that, even with the highest reflectivity of a molecule or dust particle, it is impossible to explain such a strong radiation, whereas the "atmosphere" of a comet Hyakutake is rather thin and sparse. Observations of comet C / 1999 S4 (LINEAR)by the orbiting X-ray observatory " Chandra " in 2000 made it possible to establish that the main cause of X-ray radiation was the exchange of charges during the collision of highly active ions of carbon monoxide and nitrogen in the solar wind with neutral molecules of water , oxygen and hydrogen in a coma .

The comet nucleus and its activity

Radar observations at the Arecibo Observatory showed that the nucleus of comet Hyakutake was about 2 km across and was surrounded by a "swarm" of pebble- sized particles ejected at a speed of several meters per second. These measurements were confirmed by conclusions drawn from infrared and radio observations .

The small size of the nucleus (for comparison, the nucleus of Halley's comet is about 15 km across, the Hale-Bopp comet is about 40 km) with a high brightness of the comet itself means that the nucleus must be very active. Most comets release matter only in certain areas of their surface, but it seems that comet Hyakutake had all (or almost all) of the surface layer active. At the beginning of March, the dust release rate was 2 t / s, and as the comet approached perihelion, it increased 150 times. At the same time, the velocity of the ejection itself increased from 50 m / s to 500 m / s .

Observations of the ejection of matter allowed astronomers to establish the speed of rotation of the comet's nucleus. It was noted that, passing by the Earth, the comet ejected a large mass of matter with a period of 6.23 hours. A similar, but smaller eruption, occurring with the same frequency, confirmed that this was the rotation period of the comet's nucleus .

The legacy of the comet

After it became clear that Hyakutake would pass close to Earth, there were reports in some tabloids that the comet would actually hit Earth. The Weekly World News called the discovered comet a “doomsday comet”, confusing, however, almost all the details of its discovery. Nevertheless, the reaction of the masses to Hyakutake was still calmer than to the same Hale-Bopp a year later .

Comet Hyakutake is mentioned in some feature films. The main heroine of melodrama 2002 " A Walk to Remember " ( Engl.  A Walk to the Remember ), removed Adam Shenkmanom , wanted to assemble a telescope to see the comet , is the desire to perform its young people closer to the end of the film . In one of the scenes of the film "Hurricane" by Leonardo Pieracchioni, members of the Quarini family are looking for a comet in the sky .

The comet was not ignored by astrologers either . So, she is mentioned in the book of Pavel Globa "The Teachings of the Ancient Aryans", where a chapter entitled "The Savior's Comet" is devoted to her .

In 1997, the studio Cyanogen Productions withdrew Comet yakutake documentary "the Comet Odyssey: the Comet Hyakutake Brought to Life with Time The Lapse Movies" .

4.5 out of 5 stars Reviewer:adminFebruary 05, 2021