Chandra Observations of High-energy X-Ray Sources Discovered by INTEGRAL
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چکیده
منابع مشابه
Chandra Observations and Optical Identification of Hard X-ray Sources Discovered with ASCA
We present the first results of the Chandra and optical follow-up observations of hard X-ray sources detected in the ASCA Medium Sensitivity Survey (AMSS). Optical identifications are made for five objects. Three of them show either weak or absent optical narrow emission lines and are at low redshift ∼ 0.06. One of them is a broad line object at z = 0.910 and one is a z = 0.460 object with ...
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We present observations of a sample of optically-faint, hard X-ray sources of the kind likely to be responsible for much of the hard X-ray background. We confirm that such sources are easily detected in the near-infrared, and find that they have a featureless continuum suggesting that the active nucleus is heavily obscured. The infrared colours of the majority of the targets observed are consis...
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a Osservatorio Astronomico di Roma, Via Frascati 33, I–00044 Monteporzio Catone, Italy BeppoSAX Science Data Center, Via Corcolle 19, I–00131 Roma, Italy Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge MA 02138 USA Dipartimento di Fisica, Università degli Studi “Roma Tre”, Via della Vasca Navale 84, I–00146 Roma, Italy Osservatorio Astronomico di Bologna, Via Ranzani 1, I–...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2020
ISSN: 1538-4357
DOI: 10.3847/1538-4357/ab5fd2