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In this paper we study the generation of high energy emission from normal pulsars. For this purpose we consider the particles accelerated in the outer magnetosphere sliding along the closed magnetic field lines. It has been shown that in…

高能天体物理现象 · 物理学 2020-04-08 Z. Osmanov , Z. Yoshida , V. I. Berezhiani

We study the synchrotron radiation as the observed non-thermal X-ray emission from old pulsars ($\gtrsim1-10$Myr) to investigate the particle acceleration in their magnetospheres. We assume that the power-law component of the observed X-ray…

高能天体物理现象 · 物理学 2015-06-22 Shota Kisaka , Shuta J. Tanaka

Both radiative and mechanical feedback from Active Galactic Nuclei have been found to be important for the evolution of elliptical galaxies. We compute how a shock may be driven from a central black hole into the gaseous envelope of an…

宇宙学与河外天体物理 · 物理学 2011-02-11 Y. -F. Jiang , L. Ciotti , J. P. Ostriker , A. Spitkovsky

We discuss the role of thermal cyclo-synchrotron emission in a magnetically dominated corona above an accretion disk in an active galaxy or a galactic black hole candidate. The dissipation occurs in localized active regions around the…

天体物理学 · 物理学 2015-06-24 T. Di Matteo , A. Celotti , A. C. Fabian

We examine the consequences of radiatively driven warping of accretion disks surrounding pre-main-sequence stars. These disks are stable against warping if the luminosity arises from a steady accretion flow, but are unstable at late times…

天体物理学 · 物理学 2009-10-30 P. J. Armitage , J. E. Pringle

Synchrotron emission of relativistic particles in magnetic fields is a process of paramount importance in astrophysics. Although known for over thirty years, there are still aspects of this radiative process that have received little…

天体物理学 · 物理学 2009-11-07 Roberto Aloisio , Pasquale Blasi

I propose a new mechanism for explanation of nonthernal X-ray emission of large-scale AGN jets. Namely, I assume that this radiation has synchrotron origin emitted by extremely high energy protons, and discuss implications of this model for…

天体物理学 · 物理学 2014-10-13 F. A. Aharonian

[Abdriged] The origin of the diffuse hard X-ray (2 - 10 keV) emission from starburst galaxies is a long-standing problem. We suggest that synchrotron emission of 10 - 100 TeV electrons and positrons (e+/-) can contribute to this emission,…

高能天体物理现象 · 物理学 2015-05-20 Brian C. Lacki , Todd A. Thompson

Synchrotron emission is an important process in Galactic dynamics and a potentially confusing foreground for cosmic microwave background (CMB) radiation observations. Though the mechanism of synchrotron emission is well understood, the…

天体物理学 · 物理学 2007-05-23 George F. Smoot

Synchrotron radiation is widely considered as the origin of the pulsed non-thermal emissions from rotation-powered pulsars in optical and X-ray bands. In this paper, we study the synchrotron radiation emitted by the created electron and…

高能天体物理现象 · 物理学 2017-03-15 Shota Kisaka , Shuta J. Tanaka

Shocks and turbulence generated during large-scale structure formation are predicted to produce large-scale, low surface-brightness synchrotron emission. On the largest scales, this emission is globally correlated with the thermal baryon…

宇宙学与河外天体物理 · 物理学 2015-05-28 Shea Brown

The basic mechanism responsible for radio emission in radio-loud active galactic nuclei (AGNs) is assumed to be synchrotron radiation. We suggest here that radio emission in radio-quiet objects is also due to synchrotron radiation of…

高能天体物理现象 · 物理学 2015-05-20 W. Ishibashi , T. J. -L. Courvoisier

X-ray synchrotron emission tells us of the highest energy reached by accelerated electrons. In a few supernova remnants (SN 1006, G347.3-0.5) this is the dominant form of X-ray radiation, but in most it is superposed to the dominant thermal…

天体物理学 · 物理学 2009-11-10 Jean Ballet

Non-thermal emission has been detected in WR-stars for many years at long wavelengths spectral range, in general attributed to synchrotron emission. Two key ingredients are needed to explain such emissions, namely magnetic fields and…

高能天体物理现象 · 物理学 2015-10-22 D. Falceta-Goncalves

Exact solutions are given for the Maxwell equations driven by a gyrating ultrarelativistic electron inside a reflecting cylindrical boundary. The axis of the electrons's trajectory and the axis of the surrounding cylinder are supposed to…

加速器物理 · 物理学 2011-02-01 Sandor Varro

We present statistical analysis of diffuse Galactic synchrotron emission and polarized thermal emission from dust. Both Galactic synchrotron emission and polarized thermal emission from dust reflect statistics of magnetic field fluctuations…

天体物理学 · 物理学 2008-12-12 Jungyeon Cho , A. Lazarian

We investigate the diffusion of cosmic rays into molecular cloud complexes. Using the cosmic-ray diffusion formalism of Protheroe, et al. (2008), we examine how cosmic rays diffuse into clouds exhibiting different density structures,…

高能天体物理现象 · 物理学 2015-06-22 D. I. Jones

Young stars are expected to gain most of their mass by accretion from a disk that forms around them as a result of angular momentum conservation in the collapsing protostellar cloud. Accretion initially proceeds at high rates of…

天体物理学 · 物理学 2009-11-13 Roman R. Rafikov

Magnetic fields can be generated in cosmic string wakes due to the Biermann mechanism in the presence of neutrino inhomogeneities. As the cosmic string moves through the plasma the small magnetic field is amplified by the turbulence in the…

宇宙学与河外天体物理 · 物理学 2025-01-17 Dilip Kumar , Soumen Nayak , Soma Sanyal

Cosmic-ray (CR) leptons produce radio synchrotron radiation by gyrating in interstellar magnetic fields (B-field). Details of B-fields, CR electron distributions and propagation are still uncertain. We present developments in our modelling…

星系天体物理 · 物理学 2013-11-22 Elena Orlando , Andrew Strong
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