X-ray studies of flaring plasma
نویسندگان
چکیده
منابع مشابه
X-ray flaring activity of Markarian 421
We report results from a systematic search for X-ray flares from Mrk 421, using archival data from the Rossi X-Ray Timing Explorer (RXTE) satellite. The flares are clearly seen over a wide range of timescales. The quasicontinuous coverage of the source with the All-SkyMonitor (ASM) reveals frequent occurrence of major flares that last for months. On a few occasions, the source was intensively m...
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We have studied a highly variable ultraluminous X-ray source (ULX) in the Fornax galaxy NGC1365, with a series of 12 Chandra and XMM-Newton observations between 2002 and 2006. In 2006 April, the source peaked at a luminosity ≈ 3 × 10 erg s in the 0.3–10 keV band (similar to the maximum luminosity found by ASCA in 1995), and declined on an e-folding timescale ≈ 3 days. The X-ray spectrum is alwa...
متن کاملX-ray plasma diagnostics
Results and methods are given for the investigation of hot laboratory and astrophysical plasmas parameters in a soft X-ray region 1 = 1-40 A. Line spectra of multiply charged ions are usually studied exper~mentally, and relative Intensities of spectral lines are measured. Achievements of modern physics of electronion collisions and theoretical spectroscopy make it possible to obtain for transie...
متن کاملDetection of High-energy Gamma-ray Emission during the X-ray Flaring Activity in Grb 100728a
We present the simultaneous Swift and Fermi observations of the bright GRB 100728A and its afterglow. The early X-ray emission is dominated by a vigorous flaring activity continuing until 1 ks after the burst. In the same time interval high energy emission is significantly detected by the Fermi/LAT. Marginal evidence of GeV emission is observed up to later times. We discuss the broadband proper...
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ژورنال
عنوان ژورنال: Journal of Astrophysics and Astronomy
سال: 2008
ISSN: 0250-6335,0973-7758
DOI: 10.1007/s12036-008-0017-y