![Eşsiz Kara Delik, Başka Bir Galaksiye Ateşli Bir Jet Püskürterek Keşfedildi](https://kilalu.blog/news/2024-07-29-19:09/Eşsiz Kara Delik, Başka Bir Galaksiye Ateşli Bir Jet Püskürterek Keşfedildi.jpg)
Bir sanatçının kara deliği tasviri.
Gökbilimcilerden oluşan bir ekip benzersiz bir şey buldu.[{” attribute=””>black holeKara delik 1 milyar ışıkyılı uzaklıkta.
Galaxies are classified into two types depending on their morphology: spirals and ellipticals. Spirals have a lot of cold gas and dust and optically-blue looking spiral arms. An average of one Sun-like star forms per year in spiral galaxies. Elliptical galaxies, on the other hand, are yellow in color and lack distinctive characteristics like spiral arms.
It is still a mystery to astronomers why the elliptical galaxies we see today haven’t been producing new stars for billions of years. Star creation is very rare in elliptical galaxies. There is evidence that “monster” or supermassive black holes are at fault. These “monster” black holes release enormous electron jets traveling at extremely high speeds at other galaxies, depleting the cold gas and dust needed for future star formation.
![The Black Hole Within Galaxy RAD12 Spewing a Large Unipolar Radio Bubble](https://teknomerscdn.cloudspecter.com/wp-content/uploads/2022/11/Essiz-Kara-Delik-Baska-Bir-Galaksiye-Atesli-Bir-Jet-Puskurterek.jpg 777w,https://scitechdaily.com/images/The-Black-Hole-Within-Galaxy-RAD12-Spewing-a-Large-Unipolar-Radio-Bubble-400x232.jpg 400w,https://scitechdaily.com/images/The-Black-Hole-Within-Galaxy-RAD12-Spewing-a-Large-Unipolar-Radio-Bubble-768x445.jpg 768w,https://scitechdaily.com/images/The-Black-Hole-Within-Galaxy-RAD12-Spewing-a-Large-Unipolar-Radio-Bubble.jpg 1470w)
Image of the black hole within galaxy RAD12 spewing a large unipolar radio bubble onto its merging companion galaxy. Credit: Dr. Ananda Hota, GMRT, CFHT, MeerKAT
The unique nature of RAD12 had been observed in 2013 using optical data from the Sloan Digitised Sky Survey (SDSS) and radio data from the Very Large Array (FIRST survey). However, follow-up observation with the Giant Meterwave Radio Telescope (GMRT) in India was required to confirm its truly exotic nature: The black hole in RAD12 appears to be ejecting the jet only towards a neighboring galaxy, named RAD12-B. In all cases, jets are ejected in pairs, moving in opposite directions at relativistic speeds. Why only one jet is seen coming from RAD12 remains a puzzle to astronomers.
A conical stem of young plasma is seen being ejected from the center and reaches far beyond the visible stars of RAD12. The GMRT observations revealed that the fainter and older plasma extends far beyond the central conical stem and flares out like the cap of a mushroom (seen in red in the tricolor image). The whole structure is 440 thousand light-years long, which is much larger than the host galaxy itself.
RAD12 is unlike anything known so far; this is the first time a jet has been observed to collide with a large galaxy like RAD12-B. Astronomers are now one step closer to understanding the impact of such interactions on elliptical galaxies, which may leave them with little cold gas for future star formation.
Research lead Dr. Ananda Hota says, “We are excited to have spotted a rare system that helps us understand radio jet feedback of supermassive black holes on star formation of galaxies during mergers. Observations with the GMRT and data from various other telescopes such as the MeerKAT radio telescope strongly suggest that the radio jet in RAD12 is colliding with the companion galaxy. An equally important aspect of this research is the demonstration of public participation in making discoveries through the [email protected] Citizen Science araştırma işbirliği.”
Referans: “[email protected] Birleşen yol arkadaşı galaksisine büyük bir tek kutuplu radyo baloncuğu püskürten aktif bir galaktik çekirdeğin yurttaş bilimi keşfi” Ananda Hota, Pratik Dabhade, Sravani Vaddi, Chiranjib Konar, Sabyasachi Pal, Mamta Gulati, CS Stalin, Ck Avinash, Avinash Kumar, Megha Rajoria ve Arundhati Purohit, 12 Ekim 2022, Royal Astronomical Society’nin Aylık Bildirimleri.
DOI: 10.1093/mnrasl/slac116