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Mapping the geometry of gas close to black holes with XRISM.
I am very proud to be the corresponding author for one of the first to publications from the XRISM mission. In our initial study of the Seyfert-1 AGN NGC 4151, we have found that the neutral iron fluorescence line – the strongest line in the X-ray spectrum of any massive black hole – is composed……
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Massive star ripped apart by a black hole
https://chandra.harvard.edu/photo/2023/tde/ We have recently done forensics on the tidal disruption event ASASSN-14li, and found that the elemental composition of the disrupted star is most easily explained if the star was approximately 3 solar masses. It is particularly difficult to determine the mass of stars in these violent events, and this may show a viable new……
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Postdoctoral position
The Department of Astronomy and Astrophysics at the University of Michigan invites applications for a postdoctoral researcher position with Dr. Jon Miller, focusing on observational studies of accretion onto black holes across the mass scale and related feedback, and/or studies of neutron stars. Applicants must have completed their PhD in astronomy, astrophysics, or physics before……
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Welcome, Dr. Brumback and Dr. Bogensberger
It is a pleasure to welcome Dr. McKinley Brumback and Dr. David Bogensberger to the team. They will be starting as postdoctoral fellows in 2022. Dr. Brumback is an expert on accreting pulsars and warped accretion disks. Dr. Bogensberger is an expert on AGN surveys and variability properties of accreting black holes.
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Congratulations Dr. Trueba
Nicolas Trueba successfully defended his thesis on 4/14. Later this summer, he will start a postdoctoral fellowship in solar physics with John Raymond at the Harvard-Smithsonian Center for Astrophysics.
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Undergraduate researchers in Astronomy 399
I am happy to say that Mark Reynolds and I are back to running our “research seminar” course (Astronomy 399), on black hole accretion and NASA’s Neil Gehrels Swift Observatory. We are doing this in addition to our regular teaching assignments because undergraduate research is key, and may have suffered during the pandemic. During the……
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Postdoctoral position in accretion-powered astrophysics
The Department of Astronomy and Astrophysics at the University of Michigan invites applications for a postdoctoral researcher position with Dr. Jon Miller, focusing on observational studies of accretion onto black holes across the mass scale and related feedback, and/or studies of neutron stars. Applicants must have completed their PhD in astronomy, astrophysics, or physics before……
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Welcome Paul Draghis
Paul Draghis is joining the group to work on aspects of black holes for his Ph.D. Paul finished his undergraduate degree at Stanford University, having worked on pulsars with Roger Romani. Welcome, Paul!
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NuSTAR on GRS 1915+105
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The black hole GRS 1915+105 as a changing-look micro-quasar
Black Hole and Neutron Star Astrophysics
