Browsing Articles by Subject "Supernovae"

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Solar abundance ratios of the iron-peak elements in the Perseus cluster

Hitomi Collaboration; Aharonian, F.; Akamatsu, H.; Akimoto, F.; Allen, S. W.; Angelini, L.; Audard, M.; Awaki, H.; Axelsson, M.; Bamba, A.; Bautz, M. W.; Gallo, Luigi C. (Springer Nature, 2017-11--2)

The metal abundance of the hot plasma that permeates galaxy clusters represents the accumulation of heavy elements produced by billions of supernovae¹. Therefore, X-ray spectroscopy of the intracluster medium ...
Stellar-mass black hole spin constraints from disk reflection and continuum modeling

Gallo, Luigi C.; Miller, J. M.; Reynolds, C. S.; Fabian, A. C.; Miniutti, G. (American Astronomical SocietyIOP Publishing, 2009-05-20)

Accretion disk reflection spectra, including broad iron emission lines, bear the imprints of the strong Doppler shifts and gravitational redshifts close to black holes. The extremity of these shifts depends on the proximity ...

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