Íomhá:Microquasar GRO J1655-40.jpg

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English: Artist's rendition of a black hole with an orbiting companion star that overflows its Roche lobe. Mass from the companion star is drawn towards the black hole, forming an accretion disk. GRO J1655-40 is the second so-called 'microquasar' discovered in our Galaxy. Microquasars are black holes of about the same mass as a star. They behave as scaled-down versions of much more massive black holes that are at the cores of extremely active galaxies, called quasars. Astronomers have known about the existence of stellar-mass black holes since the early 1970s. Their masses can range from 3.5 to approximately 15 times the mass of our Sun. Using Hubble data, astronomers were able to describe the black-hole system. The companion star had apparently survived the original supernova explosion that created the black hole. It is an aging star that completes an orbit around the black hole every 2.6 days. It is being slowly devoured by the black hole. Blowtorch-like jets (shown in blue) are streaming away from the black-hole system at 90 percent of the speed of light.
Dáta (released)
Foinse https://science.nasa.gov/asset/hubble/artists-view-of-black-hole-and-companion-star-gro-j1655-40
Údar ESA, NASA, and Felix Mirabel (French Atomic Energy Commission and Institute for Astronomy and Space Physics/Conicet of Argentina)

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sannadh
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This file is licensed under the Creative Commons Attribution 4.0 International license.
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ESA/Hubble
Is féidir:
  • an saothar seo a roinnt – an saothar seo a chóipeáil, a dháil amach, agus a tharchur
  • an saothar seo a athmheascadh – an saothar seo a oiriúnú
Ach amháin má leantar na coinníollacha seo a leanas:
  • sannadh – Ní mor creidiúint a thabhairt leis an saothar, faoi mar a shonraigh an údar nó tabharthóir an ceadúnais (ach ná húsáid modh a thugann le fios go thacaíonn sé/sí tú féin nó an úsáid a bhaineann tú as an saothar).
This file, which was originally posted to Hubble Site, was reviewed on 17 May 2020 by reviewer Green Giant, who confirmed that it was available there under the stated license on that date.

Captions

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Artist's View of Black Hole and Companion Star GRO J1655-40

Items portrayed in this file

taispeánann sé/sí

diosca fuillimh

dáta a bunaíodh

18 Samhain 2002

media type Béarla

image/jpeg

suim sheiceála

da19afbdec9668502d387f08435b13e7055edcc4

determination method or standard Béarla: SHA-1

méid sonraí

695,507 beart

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2,400 picteilín

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3,000 picteilín

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Dáta/AmMionsamhailToisíÚsáideoirNóta tráchta
faoi láthair16:17, 26 Aibreán 2019Mionsamhail do leagan ó 16:17, 26 Aibreán 20193,000 × 2,400 (679 KB)wikimediacommons>FriedrichKiefererBetter quality.

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