Tätaste paret av supermassiva svarta hål observerat med MUSE
I denna veckas bild tittar vi närmare på galaxen UGC 4211 där astronomer har upptäckt två supermassiva svarta hål på väg att smälta samman. Deras inbördes avstånd är bara 750 ljusår (mindre än hälften av det tidigare rekordet) vilket är det tätaste paret av detta slag som man känner till. Med hjälp av ESO:s Very Large Telescope (VLT), Atacama Large Millimeter/submillimeter Array (ALMA), där ESO är en partner, och andra teleskop kunde ljuset från det lysande materialet närmast de svarta hålen observeras.
Båda bilderna som visas här togs med MUSE-instrumentet på ESO:s VLT i Chile. Den vänstra bilden visar en klassisk vy av galaxen med stoftstråk som skymmer bokomliggande stjärnor. Den högra bilden visar emission från syre, kväve och väte i röda, gröna respektive blå färger. Rött indikerar områden med stjärnbildning och den ljusa vita centralregionen visar var de två supermassiva svarta hålen befinner sig.
Genom att kombinera data från VLT, ALMA och andra teleskop har ett forskarlag under ledning av Michael Koss vid Eureka Scientific i USA identifierat de två svarta hålen och studerat dem i detalj. De bildades sannolikt i två galaxer som kolliderade med varandra och bildade den galax vi ser i dag. Genom observationer av detta system kan man bättre förstå hur galaxer och deras supermassiva centrala svarta hål växer medan de närmar sig varandra för att smälta samman.
Andra versioner av bilden
Källa:ESO/Koss et al.
Om bilden
| ID: | potw2302c |
| Språk: | sv |
| Typ: | Observation |
| Publiceringsdatum: | 10 januari 2023 06:00 |
| Storlek: | 641 x 641 px |
Om objektet
| Namn: | UGC 4211 |
| Typ: | Early Universe : Galaxy : Component : Central Black Hole |
| Constellation: | Cancer |
Skrivbordsunderlägg
Koordinater
| Position (RA): | 8 4 46.39 |
| Position (Dec): | 10° 46' 35.92" |
| Field of view: | 0.14 x 0.14 arcminutes |
| Orientering: | Nord är -0.0° vänster om lodrätt |
Färger och filter
| Band | Våglängd | Teleskop |
|---|---|---|
| Synligt ljus OIII | 500 nm | Very Large Telescope MUSE |
| Synligt ljus NII | 575 nm | Very Large Telescope MUSE |
| Synligt ljus H-alpha | 656 nm | Very Large Telescope MUSE |
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