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Origin of intense light in supermassive black holes and tidal disruption events revealed

Origin of intense light in supermassive black holes and tidal disruption events revealed
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Elad Steinberg , Racah Institute Of Physics , Hebrew University , Tidal Disruption Events , Racah Institute ,

Origin of light in black holes and tidal disruption revealed

The new study by The Hebrew University of Jerusalem is a significant “breakthrough” for understanding Tidal Disruption Events (TDEs) involving supermassive black holes. ....

Israel General , Elad Steinberg , Albert Einstein , Wikimedia Commons , Hu Racah Institute Of Physics , Hebrew University Of Jerusalem , Hebrew University , Tidal Disruption Events , Disk Shocks , Peak Light , Israeli Science , Scientific Study , Black Hole ,

Stream–disk shocks as the origins of peak light in tidal disruption events

Tidal disruption events (TDEs) occur when stars are ripped apart1,2 by massive black holes and result in highly luminous, multi-wavelength flares3–5. Optical–ultraviolet observations5–7 of TDEs contradict simple models of TDE emission2,8, but the debate between alternative models (for example, shock power9,10 or reprocessed accretion power11–16) remains unsettled, as the dynamic range of the problem has so far prevented ab initio hydrodynamical simulations17. Consequently, past simulations have resorted to unrealistic parameter choices10,12,18–21, artificial mass injection schemes22,23 or very short run-times24. Here we present a three-dimensional radiation-hydrodynamic simulation of a TDE flare from disruption to peak emission, with typical astrophysical parameters. At early times, shocks near pericentre power the light curve and a previously unknown source of X-ray emission, but circularization and outflows are inefficient. Near peak light, stream– ....

Monte Carlo , Ja Jr Cummings , Ultraviolet Transient Astronomy Satellite , Space Telescopes , Gamma Ray , Tidal Disruption Events , Realistic Structures , Softx Ray , Star Ingesting Luminosity , Intermediate Mass Black Holes ,

Origin of intense light in supermassive black

<p>A<strong> </strong><em>new study by Hebrew University is a significant breakthrough in understanding Tidal Disruption Events (TDEs) involving supermassive black holes. The new simulations, for the first time ever, accurately replicate the entire sequence of a TDE from stellar disruption to the peak luminosity of the resulting flare. This study has unveiled a previously unknown type of shockwave within TDEs, settling a longstanding debate about the energy source of the brightest phases in these events. It confirms that shock dissipation powers the brightest weeks of a TDE flare, opening doors for future studies to utilize TDE observations as a means to measure essential properties of black holes and potentially test Einstein's predictions in extreme gravitational environments.</em></p>
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Elad Steinberg , Method Of Research , Racah Institute Of Physics , Hebrew University , Tidal Disruption Events , Racah Institute , Disk Shocks , Peak Light , Tidal Disruption ,

Cornell Joins NSF Grant to Link Global Multi-Messenger Astrophysics Research

Cornell Joins NSF Grant to Link Global Multi-Messenger Astrophysics Research
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United States , Verac Rubin , Adam Brazier , Gautham Narayan , Cornell Center , Division Of Physics , University Of California Santa Barbara , National Science Foundation Office Of Advanced Cyberinfrastructure , Penn State University , Division Of Astronomical Science , National Center , National Science Foundation , Advanced Computing , Supercomputing Applications , Scalable Cyberinfrastructure , Multi Messenger Astrophysics , Las Cumbres Observatory , California Santa Barbara , Penn State , Astrophysical Surveys , Kagra Collaboration , Icecube Neutrino Experiment , Active Galactic Nuclei , Tidal Disruption Events , National Science Foundation Office , Advanced Cyberinfrastructure ,