For faster navigation, this Iframe is preloading the Wikiwand page for Sagittarius A*.

Sagittarius A*

2022. aasta maikuus avaldatud kujutis

Sagittarius A* on ülimassiivne must auk, mis asub Linnutee keskosas Amburi ja Skorpioni tähtkuju piiril.[1]

Sagittarius A* sarnaneb nendega, mida arvatakse olevat enamiku kui mitte kõigi spiraal- ja elliptiliste galaktikate keskosades. Sagittarius A* asub Maast umbes 26 000 valgusaasta kaugusel.[2]

Allikat ei saa vaadelda nähtavas valguses, sest selle vaatlemist Maalt takistab kosmiline tolm.[1] Sagittarius A*-d on uuritud raadioastronoomia abil ning 2018. aastal tehtud mõõtmiste kohaselt on antud raadiolainete allika diameeter 60 miljonit km.[3][4] Sagittarius A* läheduses tiirlevate tähtede, eriti S2 vaatlemisel on tuvastatud, et need tiirlevad tunduvalt kiiremini kui teised Linnutee tähed.[1]

12. mail 2022 avaldasid Event Horizon Telescope'i astronoomid esimese foto Sagittarius A*'st, mis koostati 2017. aastal kogutud vaatlusandmetega.[5] Foto kinnitas, et see on must auk ning see on Messier 87 musta augu järel teine must auk, millest on avaldatud foto.[6]

  1. 1,0 1,1 1,2 "Sagittarius A". Constellation Guide. Vaadatud 26. august 2019.
  2. "Supermassive Black Hole Sagittarius A*". NASA. Vaadatud 26. august 2019.
  3. "Hypervelocity Star Flung Out of Milky Way May Have Unusual Origin". ExtremeTech. Vaadatud 26. august 2019.
  4. "Detection of Intrinsic Source Structure at ~3 Schwarzschild Radii with Millimeter-VLBI Observations of SAGITTARIUS A*". The Astrophysical Journal. Vaadatud 26. august 2019.
  5. "Astronoomid avaldasid esimese pildi Linnutee suurest mustast august". ERR Novaator. Vaadatud 15. mai 2022.
  6. "Black hole: First picture of Milky Way monster". BBC News. Vaadatud 15. mai 2022.

Välislingid

[muuda | muuda lähteteksti]
{{bottomLinkPreText}} {{bottomLinkText}}
Sagittarius A*
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?