NuSTAR Spectroscopy of the Microquasar GRS 1915+105
Abstract
We present the results of an early observation of the microquasar GRS 1915+105 in a "plateau" state. This source is well-known as the basis for much work on relativistic jets, disk-jet connections, and comparisons to quasars. In just 16 ks, an excellent spectrum is obtained across the full 3-79 keV band. A strong, broad Fe K line is detected, as well as Fe K edges, and prominent curvature at high energy. The signal to noise at high energy is unprecedented and facilitates strong model constraints. The spectrum can be described extremely well using relativistically-blurred disk reflection models. This source illustrates the ability of NuSTAR to capture definitive reflection spectra of bright Galactic black holes and neutron stars.
- Publication:
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AAS/High Energy Astrophysics Division #13
- Pub Date:
- April 2013
- Bibcode:
- 2013HEAD...1320401M