The Unusual Spectrum of the Ultraluminous X-Ray Source M82 X-1
نویسندگان
چکیده
منابع مشابه
Black Hole Mass of the Ultraluminous X-ray Source M82 X-1
We report first clear evidence for the simultaneous presence of a low frequency break and a QPO in the power spectrum of a well known ultralumnious X-ray source (ULX) in M82 using long XMMNewton observations. The break occurs at a frequency of 34.2 −3 mHz. The QPO has a centroid at νQPO = 114.3± 1.5 mHz, a coherence Q ≡ νQPO/∆νFWHM ≃ 3.5 and an amplitude (rms) of 19% in the 2− 10 keV band. The ...
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We detected a major X-ray outburst from M82 with a duration of 79 days, an average flux of 5×10 erg cm s in the 2-10 keV band, and strong variability. The X-ray spectrum remained hard throughout the outburst. We obtained a Chandra observation during the outburst that shows that the emission arises from the ultraluminous X-ray source X41.4+60. This source has an unabsorbed flux of (5.4± 0.2)× 10...
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We report the results of an observation of a large diameter (110 pc) supernova remnant (SNR) found to encircle the position of the ultraluminous X-ray source (ULX) IC 342 X-1. The inferred initial energy input to the SNR is at least 2 – 3 times greater than the canonical energy for an “ordinary” supernova remnant. Two regions on the inside of the shell are bright in [OIII] λ5007 emission, possi...
متن کاملBlack Hole Mass of the Ultraluminous X-ray Source M82 X–1 Accepted for Publication in Apj Letters
We report the first clear evidence for the simultaneous presence of a low frequency break and a QPO in the fluctuation power spectrum of a well known ultraluminous X-ray source (ULX) in M82 using long XMM-Newton observations. The break occurs at a frequency of 34.2 −3 mHz. The QPO has a centroid at νQPO = 114.3±1.5 mHz, a coherence Q ≡ νQPO/∆νFWHM ≃ 3.5 and an amplitude (rms) of 19% in the 2 − ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2006
ISSN: 0004-637X,1538-4357
DOI: 10.1086/501163