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Binary neutron star (BNS) mergers can result in the formation of long-lived magnetar remnants which can enhance neutrino and electromagnetic (EM) emissions. In this work, we study the resulting multi-wavelength EM emissions and the…

高能天体物理现象 · 物理学 2025-08-22 Mainak Mukhopadhyay , Shigeo S. Kimura

Some pulsating stars are good clocks. When they are found in binary stars, the frequencies of their luminosity variations are modulated by the Doppler effect caused by orbital motion. For each pulsation frequency this manifests itself as a…

太阳与恒星天体物理 · 物理学 2015-06-04 Hiromoto Shibahashi , Donald W. Kurtz

The effect of an intense external linear polarized radiation field on the angular distributions and polarization states of the photons emitted during the radiative recombination is investigated. It is predicted, on symmetry grounds, and…

其他凝聚态物理 · 物理学 2009-11-13 Saverio Bivona , Giovanni Bonanno , Riccardo Burlon , Claudio Leone

In this paper we use the 7 mm and 1.3 mm light curves obtained during the 2003.5 low excitation phase of the eta Carinae system to constrain the possible parameters of the binary orbit. To do that we assumed that the mm wave emission is…

天体物理学 · 物理学 2009-11-13 Z. Abraham , D. Falceta-Goncalves , T. P. Dominici , A. Caproni , V. Jatenco-Pereira

The energy-loss formula of the production of gravitons by the binary is derived in the source theory formulation of gravity. Then, the quantum energy-loss formula involving radiative corrections is derived. We postulate an idea that…

高能物理 - 唯象学 · 物理学 2007-05-23 Miroslav Pardy

A new nonlinear electromagnetic wave mode in a plasma is reported. Its existence depends on the interaction of an intense circularly polarized electromagnetic wave with a plasma, where quantum electrodynamical photon--photon scattering is…

等离子体物理 · 物理学 2015-06-26 Lennart Stenflo , Gert Brodin , Mattias Marklund , Padma K. Shukla

Radiation propagating over cosmological distances can probe light weakly interacting pseudoscalar (or scalar) particles. The existence of a spin-0 field changes the dynamical symmetries of electrodynamics. It predicts spontaneous generation…

高能物理 - 唯象学 · 物理学 2009-11-10 Sudeep Das , Pankaj Jain , John P. Ralston , Rajib Saha

The power and the probability of electromagnetic radiation from an electron in a constant background tensor field violating Lorentz invariance are calculated. The case of a background field of the quasielectric type is considered. The…

高能物理 - 唯象学 · 物理学 2025-01-31 Anatoly V. Borisov

We calculate numerically the emissivity and surface flux of electron-electron bremsstrahlung radiation from the surface of a bare quark star. The restricted electronic phase space due to the presence of an effective photon mass results in a…

高能天体物理现象 · 物理学 2010-01-07 Jean-François Caron , Ariel R. Zhitnitsky

Gamma-rays from pulsars can be efficiently attenuated in their magnetospheres via the mechanism of single-photon pair production and also the exotic QED process of photon splitting, which become prolific in fields approaching the quantum…

天体物理学 · 物理学 2016-08-30 Matthew G. Baring , Alice K. Harding , Peter L. Gonthier

We present a model for pulsar radio eclipses in some binary systems, and test this model for PSRs B1957+20 and J2051-0827. We suggest that in these binaries the companion stars are degenerate dwarfs with strong surface magnetic fields. The…

天体物理学 · 物理学 2009-10-31 David Khechinashvili , George Melikidze , Janusz Gil

(abridged) Gamma-ray binaries are massive stars with compact object companions that are observed to emit most of their energy in the gamma-ray range. One of these binaries is known to contain a radio pulsar, PSR B1259-63. Synchrotron and…

高能天体物理现象 · 物理学 2015-05-27 Jérôme Pétri , Guillaume Dubus

We investigate the charged scalar lepton production processes $\gamma\gamma\to{\widetilde{\ell}}^{+}{\widetilde{\ell}}^{-}$ at high energy $\gamma\gamma$ colliders in the framework of the minimal supersymmetric standard model (MSSM). Here…

高能物理 - 唯象学 · 物理学 2009-10-22 Tadashi Kon

The scattering of electromagnetic waves by an obstacle is analyzed through a set of partial differential equations combining the Maxwell's model with the mechanics of fluids. Solitary type EM waves, having compact support, may easily be…

计算物理 · 物理学 2018-03-28 Daniele Funaro , Eugene Kashdan

It is argued that if extragalactic magnetic fields are smaller than 2x10^{-12} G the flux of ultra-high energy photons of (a few)x10^{-1} eV cm^{-2}s^{-1}sr^{-1} predicted in the top-down models of UHE CR implies similar flux of the diffuse…

天体物理学 · 物理学 2007-05-23 P. G. Tinyakov

Astrophysical compact objects, such as magnetars, neutron star mergers, etc, have strong electromagnetic fields beyond the Schwinger field ($B_c = 4.4 \times 10^{13}\, {\rm G}$). In strong electric fields, electron-positron pairs are…

高能天体物理现象 · 物理学 2025-03-13 Sang Pyo Kim

In this paper we analyze the classical electromagnetic radiation of an accelerating point charge moving on a straight line trajectory. Depending on the duration of accelerations, rapidity distributions of photons emerge, resembling the ones…

高能物理 - 唯象学 · 物理学 2014-05-19 Tamas S. Biro , Zsuzsanna Szendi , Zsolt Schram

Scattering of electromagnetic (EM) waves by one and many small ($ka\ll 1$) impedance particles $D_m$ of an arbitrary shape, embedded in a homogeneous medium, is studied. Analytic formula for the field, scattered by one particle, is derived.…

偏微分方程分析 · 数学 2013-04-10 A. G. Ramm

We study the propagation of classical electromagnetic waves on the simplest four-dimensional spherically symmetric metric with a dilaton background field. Solutions to the relevant equations are obtained perturbatively in a parameter which…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Roberto Casadio , Sergio Fabi , Benjamin Harms

Over the last four decades, persistent and flaring emission of magnetars observed by various telescopes has provided us with a suite of light curves and spectra in soft and hard X-rays, with no emission yet detected above around 1 MeV.…

高能天体物理现象 · 物理学 2019-04-17 Kun Hu , Matthew G. Baring , Zorawar Wadiasingh , Alice K. Harding