| SRG/eRosita: An all-sky X-ray map, showing tens of thousands of galaxy clusters, 100 tidal disruption events and the variability of millions of quasars, AGNs and flaring stars |
| Rashid Sunyaev, Max Planck Institute for Astrophysics, Garching |
 Event Type: Astro Seminar |
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| Time: 2:00 PM - 3:15 PM |
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| Location: 726 Broadway, 940, CCPP Seminar |
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| Abstract: SRG/eRosita has detected more than 1.5 million X-ray sources on one hemisphere,
including a million quasars and AGNs and 250,000 stars after 4.4 scans of the entire sky. These include dozens of X-ray emitting brown dwarfs, many newly discovered symbiotic stars, blazars, radio galaxies with very bright jets, etc.
Many of these sources are highly variable. For more than 500 extragalactic X-ray objects from the SRG/eRosita catalog, we found optical counterparts with strong proper motion measured with GAJA.
In addition, about twenty-five thousand galaxy clusters with extended hot ( Te ~ 0.5-15 KeV) intercluster gas and three interesting supernova remnants have been found on one hemisphere by eRosita. The central part of one of them emits predominantly in the Fe XVII line. These remnants show no radio, gamma-rays, or optical emission Link to the Event Video |