The black hole GRS 1915+105 is showing a strong and dim X-ray flare, according to the AstroSat data.
The research discovered that the corona cools and expands out when it dims and warms up during intense flashes.
In cooperation with ISRO’s UR Rao Satellite Center and the University of Haifa in Israel, researchers from the Indian Institute of Technology (IIT), Guwahati, have decoded the enigmatic X-ray signal pattern that a black hole emits.
The process of Understanding any hidden or challenging information is known as decoding. Officials said that researchers saw the X-rays coming from the black hole shifting between brilliant and faint phases using data from India’s satellite observatory AstroSat. The esteemed magazine “Monthly Notices of the Royal Astronomical Society” has published the research’s conclusions.
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Scholars from throughout the globe are researching
Scientists from all across the globe are working to comprehend black holes. Black holes release intense heat and X-rays as they extract gas from the outer layers of different stars. Scientists may learn vital details about the environment around black holes by examining these X-rays. We have discovered the first evidence of intense X-ray discharges, or glowing, As stated by Professor S. Das from the Department of Physics, IIT Guwahati.
Black Hole Discovery: GRS 1915+105
- Data: AstroSat
- Found: Bright & dim X-ray phases
- Corona: Heats in bright, cools in dim
- Flicker: Only in bright phase
- By: IIT Guwahati, ISRO, Haifa Univ.
- Published: Royal Astronomical Society
- Significance: Clues to galaxy formation
A brighter (brighter) and a fainter (slower) phase are the two separate phases of the X-ray glow that the researchers saw in the black hole they analyzed. During the brighter phase and at the peak of flickering, the corona—a layer of superheated gases around the black hole—reaches very high temperatures.
On the other hand, the fluctuating stops when the dim phase occurs because the corona cools and expands. Given this obvious correlation, the thick corona is most likely the source of these brilliant signals. The rapid flashing signal only showed up during the (bright) phase, even though each phase lasted several hundred seconds and was repeated on a regular basis.
Key Findings on Black Hole Corona
- Phases: Brighter (fast flicker) & Fainter (calm)
- Corona in Bright Phase: Extremely hot, causes rapid flashing
- Corona in Dim Phase: Expands and cools, flicker disappears
- Duration: Each phase lasts several hundred seconds
- Cause: Thick corona is the source of brilliant X-ray signals
- Insight: Shows black hole’s gravity & extreme heat shaping galaxy evolution
Data discovered about black holes
Black Hole’s Temporary Corona
The way the gasses enter the black hole determines its size and energy. According to Professor Das, this study declares the extraordinary temperature and strong gravitational pull near the black hole’s edge.
These results also suggest the role of black holes in the development of whole galaxies.