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Gamma-ray binaries are orbital modulated gamma-ray sources in the Galaxy detected both at GeV and TeV energies. The high-energy radiation may come from the interaction of energetic electrons injected by a young pulsar and photons from the…

High Energy Astrophysical Phenomena · Physics 2009-12-21 B. Cerutti , G. Dubus , G. Henri

Correlations between gamma-ray and X-ray spectral properties of pulsars are investigated in order to provide observational hints on physics involved in pulsars' high-energy emissions. Using a sample of 43 pulsars detected in both X-ray and…

High Energy Astrophysical Phenomena · Physics 2026-01-21 Ashwin Aravindaraj , Hsiang-Kuang Chang

In the last few years considerable observational resources have been devoted to study the thermal emission from isolated neutron stars. Detailed XMM and Chandra observations revealed a number of features in the X-ray pulse profile, like…

Astrophysics · Physics 2009-11-10 Silvia Zane , Roberto Turolla

We compute the patterns of $\gamma$-ray emission due to curvature radiation in dissipative pulsar magnetospheres. Our ultimate goal is to construct macrophysical models that are able to reproduce the observed $\gamma$-ray light-curve…

High Energy Astrophysical Phenomena · Physics 2015-06-17 Constantinos Kalapotharakos , Alice K. Harding , Demosthenes Kazanas

Polarization measurements provide strong constraints on models for emission from rotation-powered pulsars. We present multiwavelength polarization predictions showing that measurements over a range of frequencies can be particularly…

High Energy Astrophysical Phenomena · Physics 2017-05-24 Alice K. Harding , Constantinos Kalapotharakos

Recent observations have detected a number of young pulsars from the power peak in the gamma-ray band to the incoherent photon peak in the optical/IR. We have made progress on the multiwavelength phenomenology of pulsar emission and…

Astrophysics · Physics 2007-05-23 Roger W. Romani

Radiation of X-ray bursts and of accretion shocks in weakly magnetized neutron stars in low-mass X-ray binaries is produced in plane-parallel atmospheres dominated by electron scattering. We first discuss polarization produced by single…

High Energy Astrophysical Phenomena · Physics 2016-06-01 Juri Poutanen

Since the era of the Fermi/LAT and atmospheric Cerenkov telescopes, pulsars are known to emit high and very high-energy photons, in the MeV-GeV range and sometimes up to TeV. To date, it is still unclear where and how these photons are…

High Energy Astrophysical Phenomena · Physics 2019-02-13 Jérôme Pétri

The seven known gamma-ray pulsars represent a very small fraction of the more than 1000 presently known radio pulsars, yet they can give us valuable information about pulsar particle acceleration and energetics. Although the theory of…

Astrophysics · Physics 2007-05-23 Alice K. Harding

Context. Gamma-ray binaries are systems that radiate the dominant part of their non-thermal emission in the gamma-ray band. In a wind-driven scenario, these binaries are thought to consist of a pulsar orbiting a massive star, accelerating…

High Energy Astrophysical Phenomena · Physics 2021-03-02 David Huber , Ralf Kissmann , Anita Reimer , Olaf Reimer

Although pulsars can radiate electromagnetic wave from radio to gamma ray bands, we still have no a united model to understand the multi-band emission. In this paper the effort for a joint model is presented. The inverse Compton scattering…

Astrophysics · Physics 2007-05-23 G. J. Qiao , K. J. Lee , H. G. Wang , R. X. Xu

This work presents a methodological approach to generate realistic $\gamma$-ray light curves of pulsars, resembling reasonably well the observational ones observed by the Fermi-Large Area Telescope instrument, fitting at the same time their…

High Energy Astrophysical Phenomena · Physics 2024-04-03 Daniel Íñiguez-Pascual , Diego F. Torres , Daniele Viganò

Some of the very high energy (VHE) gamma-ray sources detected with the modern generation of Cherenkov telescopes have been identified with previously known X-ray binary systems. These detections demonstrate the richness of non-thermal…

Astrophysics · Physics 2009-11-13 Josep M. Paredes

Advances in X-ray and gamma-ray astronomy have opened a new window on our universe and revealed a wide variety of binaries composed of a compact object and a Be star. In Be X-ray binaries, a neutron star accretes the Be disk and truncates…

High Energy Astrophysical Phenomena · Physics 2014-10-15 Astrid Lamberts

More than a dozen binary systems are now established as sources of variable, high energy (HE, 0.1-100 GeV) gamma rays. Five are also established sources of very high energy (VHE, >100 GeV) gamma rays. The mechanisms behind gamma-ray…

High Energy Astrophysical Phenomena · Physics 2015-07-06 Guillaume Dubus

This paper reviews the current understanding of double neutron star and neutron star black hole binaries. It addresses mainly (nuclear) astrophysics aspects of compact binary mergers and thus complements recent reviews that have emphasized…

High Energy Astrophysical Phenomena · Physics 2015-03-17 S. Rosswog

Observations of two well known binary systems (LS 5039 and LS I +61 303) with the satellite and Cherenkov telescopes revealed the broad band $\gamma$-ray spectra which seems to show two components, the first at GeV energies, showing…

High Energy Astrophysical Phenomena · Physics 2015-05-30 W. Bednarek

We explore a unique electromagnetic signature of stellar-mass compact-object binaries long before they are detectable in gravitational waves. We show that gravitational lensing of light emitting components of a compact-object binary, by the…

High Energy Astrophysical Phenomena · Physics 2020-03-11 Daniel J. D'Orazio , Rosanne Di Stefano

The binary systems that have been detected in gamma rays have proven very useful to study high-energy processes, in particular particle acceleration, emission and radiation reprocessing, and the dynamics of the underlying magnetized flows.…

We investigate the shapes of \gamma-ray pulsar light curves using 3D pulsar magnetosphere models of finite conductivity. These models, covering the entire spectrum of solutions between vacuum and force-free magnetospheres, for the first…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Constantinos Kalapotharakos , Alice K. Harding , Demosthenes Kazanas , Ioannis Contopoulos
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