167 citations · 167 across the 2 of their papers we have counts for
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astro-ph2006★ 30 cited
A Stellar-mass Black Hole in the Ultra-luminous X-ray Source M82 X-1?
Takashi Okajima, Ken Ebisawa, Toshihiro Kawaguchi
We have analyzed the archival XMM-Newton data of the bright Ultra-Luminous X-ray Source (ULX) M82 X-1 with an 105 ksec exposure when the source was in the steady state. Thanks to t…
astro-ph2004
A New View of the Supersoft X-Ray Source Cal 87 Observed with XMM-Newton
Marina Orio, Ken Ebisawa, John Heise +1
Cal 87 was observed with XMM-Newton in April of 2003. The source shows a rich emission line spectrum, where lines can be identified if they are red-shifted by 700-1200 km/s. These…