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相关论文: Inverse Compton X-rays from the radio galaxy 3C 21…

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We present ROSAT PSPC observations of the twin-jet radio galaxy 3C449. The soft X-ray emission from this object is dominated by an extended halo with a scale comparable to that of the radio source. The asymmetry of the X-ray emission is…

天体物理学 · 物理学 2009-10-30 M. J. Hardcastle , D. M. Worrall , M. Birkinshaw

We present a detailed analysis of jet activity in the radio galaxy 3C348 at the center of the galaxy cluster Hercules A. We use archival Chandra data to investigate the jet-driven shock front, the radio-faint X-ray cavities, the eastern…

高能天体物理现象 · 物理学 2025-01-15 F. Ubertosi , Y. Gong , P. Nulsen , J. P. Leahy , M. Gitti , B. R. McNamara , M. Gaspari , M. Singha , C. O'Dea , S. Baum

Qiao and his collaborators recently proposed an inverse Compton Scattering (ICS) model to explain radio emission of pulsars. In this paper, we investigate the polarization properties of pulsar emission in the model. First of all, using the…

天体物理学 · 物理学 2009-10-31 R. X. Xu , J. F. Liu , J. L. Han , G. J. Qiao

We propose that the X-ray emission detected by Chandra from the 100-kiloparsec-scale jet of PKS 0637-752 is produced through inverse Compton scattering of the Cosmic Microwave Background (CMB). We analyze the physical state of the jet and…

天体物理学 · 物理学 2009-10-31 F. Tavecchio , L. Maraschi R. M. Sambruna , C. M. Urry

HST observations have shown that low-redshift 3CR radio galaxies often exhibit a point-like optical component positionally coincident with the GHz-frequency radio core. In this paper we discuss the correlation between the luminosities of…

天体物理学 · 物理学 2009-10-31 M. J. Hardcastle , D. M. Worrall

In an effort to understand the cause of the apparent depletion in the number density of radio-loud AGNs at $z>3$, this work investigates the viability of the so-called Cosmic Microwave Background (CMB) quenching mechanism of intrinsically…

We re-analyze the Chandra ACIS spectrum of the kpc-scale jet in PKS 0637-752 to investigate the possible low energy cutoff in the relativistic electron spectrum producing the non-thermal radiation in the scenario of inverse Compton emission…

天体物理学 · 物理学 2009-08-07 M. Mueller , D. A. Schwartz

Shocks around clusters of galaxies accelerate electrons which upscatter the Cosmic Microwave Background photons to higher-energies. We use an analytical model to calculate this inverse Compton (IC) emission, taking into account the effects…

高能天体物理现象 · 物理学 2015-09-09 Ryo Yamazaki , Abraham Loeb

By summing a large number of ROSAT High Resolution Imager (HRI) observations of the variable radio galaxy 3C 390.3, we demonstrate that the X-ray emission associated with the northern radio lobe (reported by Prieto 1997) can be identified…

天体物理学 · 物理学 2009-10-30 D. E. Harris , K. M. Leighly , J. P. Leahy

Using XMM we detect faint unresolved X-ray emission from the Compact Steep Spectrum radio galaxy 3C303.1. We detect a thermal component at kT = 0.8 keV which seems likely to be produced in the ISM of the host galaxy. There is evidence for a…

天体物理学 · 物理学 2008-11-26 C. O'Dea , B. Mu , D. Worrall , J. Kastner , S. Baum , W. De Vries

We discuss the physical properties of four quasar jets imaged with the Chandra X-ray Observatory in the course of a survey for X-ray emission from radio jets. These objects have sufficient counts to study their spatially resolved…

We report the discovery with Chandra of X-ray-emitting gas associated with the jet-cloud interaction in the radio galaxy 3C 277.3 (Coma A), a source that falls in the most important power range for radio-mode feedback in the Universe. This…

高能天体物理现象 · 物理学 2016-02-17 D. M. Worrall , M. Birkinshaw , A. J. Young

Using deep Chandra ACIS observation data for Cygnus A, we report evidence of non-thermal X-ray emission from radio lobes surrounded by a rich intra-cluster medium (ICM). The diffuse X-ray emission, which are associated with the eastern and…

宇宙学与河外天体物理 · 物理学 2015-05-18 Y. Yaji , M. S. Tashiro , N. Isobe , M. Kino , K. Asada , H. Nagai , S. Koyama , M. Kusunose

A list is presented of known extragalactic radio jets which also have associated X-ray emission. The canonical emission processes for the production of X-rays are reviewed and the sources are categorized on the basis of our current…

天体物理学 · 物理学 2007-05-23 D. E. Harris

We study the origin of the non-thermal emission from the intracluster medium, including the excess hard X-ray emission and cluster-wide radio haloes, through fitting two representative models to the Coma cluster. If the synchrotron emitting…

天体物理学 · 物理学 2009-11-07 H. Liang , V. Dogiel , M. Birkinshaw

Complementary views of galaxy clusters in the radio synchrotron, hard X-ray inverse Compton, and high-energy gamma-ray regimes are critical in calibrating them as high-precision cosmological probes. We present predictions for scaling…

天体物理学 · 物理学 2009-11-13 Christoph Pfrommer

Herschel Space Observatory photometry and extensive multiwavelength followup have revealed that the powerful radio galaxy 3C 220.3 at z=0.685 acts as a gravitational lens for a background submillimeter galaxy (SMG) at z=2.221. At an…

We report the first detection, with Chandra, of X-ray emission from the jet of the powerful narrow-line radio galaxy 3C 346. X-rays are detected from the bright radio and optical knot at which the jet apparently bends by about 70 degrees.…

天体物理学 · 物理学 2009-11-10 D. M. Worrall , M. Birkinshaw

The Fermi Gamma-ray Space Telescope has detected the gamma-ray glow emanating from the giant radio lobes of the radio galaxy Centaurus A. The resolved gamma-ray image shows the lobes clearly separated from the central active source. In…

高能天体物理现象 · 物理学 2010-06-22 LAT Collaboration

We use new and archival Chandra data to investigate the X-ray emission from a large sample of compact hotspots of FRII radio galaxies and quasars from the 3C catalogue. We find that only the most luminous hotspots tend to be in good…

天体物理学 · 物理学 2009-11-10 M. J. Hardcastle , D. E. Harris , D. M. Worrall , M. Birkinshaw