activity
19932023
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations · 7k across the 52 of their papers we have counts for

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Showing 2006 · astro-phShow all

2 papers · 2 filters

astro-ph2006★ 1 cited

The Galactic Black Holes Cyg X-1, GX 339-4, and 4U 1957+11: In Transition and at High Resolution

Michael A. Nowak

I review here some of the open questions regarding the geometry and emission mechanisms of galactic black hole candidates. For hard states, I concentrate on the perspective of ``di…

astro-ph2006★ 10 cited

Hunting the nature of IGR J17497-2821 with X-ray and NIR observations

A. Paizis, M. A. Nowak, S. Chaty +7

We report on a Chandra grating observation of the recently discovered hard X-ray transient IGR J17497-2821. The observation took place about two weeks after the source discovery at…