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Dark matter (DM) can give observable effects decaying or annihilating with production of electrons or/and photons. Such probability was widely researched for our Galaxy. Here we consider one aspect of similar effect for Andromeda galaxy. We…

High Energy Astrophysical Phenomena · Physics 2020-11-11 K. M. Belotsky , E. S. Shlepkina , M. L. Soloviev

We study the inverse Compton scattering of the CMB photons off high-energy nonthermal electrons. We extend the formalism obtained by the previous paper to the case where the electrons have non-zero bulk motions with respect to the CMB…

Cosmology and Nongalactic Astrophysics · Physics 2010-04-22 Satoshi Nozawa , Yasuharu Kohyama , Naoki Itoh

The spectral shape of radiation due to Inverse Compton Scattering is analyzed, in the Thomson and the Klein-Nishina regime, for electron distributions with exponential cut-off. We derive analytical, asymptotic expressions for the spectrum…

High Energy Astrophysical Phenomena · Physics 2015-06-05 E. Lefa , S. R. Kelner , F. A. Aharonian

The cross section of atomic electron Compton scattering $\gamma + e \rightarrow \gamma^\prime + e^\prime $ was measured in the 4.40--5.475 GeV photon beam energy region by the {\em PrimEx} collaboration at Jefferson Lab with an accuracy of…

Scattering relativistic electrons with optical lasers can result in a significant frequency upshift for the photons, potentially producing $\gamma$-rays. This is what linear Compton scattering taught us. Ultra-intense lasers offer nowadays…

Plasma Physics · Physics 2019-06-05 Marija Vranic , Thomas Grismayer , Sebastian Meuren , Ricardo A. Fonseca , Luis O. Silva

Electron-positron pair annihilation into a single photon is studied when a second free electron is present. Focussing on the relativistic regime, we show that the photon emitted in the three-lepton interaction may exhibit distinct angular…

High Energy Physics - Phenomenology · Physics 2015-05-28 Huayu Hu , Carsten Müller

We show that Compton scattering of soft photons with energies near 100 eV in thermally stratified black-hole accretion plasmas with temperatures in the range 100 keV - 1 MeV can give rise to an X-ray spectral hardening near 10 keV. This…

Astrophysics · Physics 2009-10-28 J. G. Skibo , C. D. Dermer

Compton scattering is one of the few spectroscopies which directly probes the ground state momentum density in materials. Recent progress in synchrotron light sources has brought a renewed interest in the technique as a tool for…

Materials Science · Physics 2007-05-23 A. Bansil , B. Barbiellini

Radiative corrections (RC) to the Compton scattering cross section are calculated in the leading and next-to leading logarithmic approximation to the case of colliding high energy photon-electron beams. RC to the double Compton scattering…

High Energy Physics - Phenomenology · Physics 2009-11-10 A. N. Ilyichev , E. A. Kuraev , V. Bytev , Yu. P. Peresun'ko

We study the properties of plasmas containing a low energy thermal photon component at comoving temperature \theta \equiv kT'/m_e c^2 \sim 10^{-5} - 10^{-2} interacting with an energetic electron component, characteristic of, e.g., the…

Astrophysics · Physics 2009-11-11 Asaf Pe'er , Peter Mészáros , Martin J. Rees

We analyze the effects of a doubly charged vector bilepton as well as exotic quarks with charge 5/3 e and -4/3 e on light by light scattering. We consider mass values in the range 0.3--1 TeV, which would be reached at the planned future…

High Energy Physics - Phenomenology · Physics 2010-12-17 G. Tavares-Velasco , J. J. Toscano

We consider the effect of electron scattering on lines emitted as a result of supernova interaction with a circumstellar medium, assuming that the scattering occurs in ionized gas in the preshock circumstellar medium. The single scattering…

High Energy Astrophysical Phenomena · Physics 2018-02-07 Chenliang Huang , Roger Chevalier

Dark photon not only provides a portal linking dark sector particles and ordinary matter but also is a well-motivated dark matter candidate. We propose to detect the dark photon dark matter through the inverse Compton-like scattering…

High Energy Physics - Phenomenology · Physics 2022-04-06 Liangliang Su , Lei Wu , Bin Zhu

In blazars such as 3C 279, GeV gamma-rays are thought to be produced by inverse Compton scattering of soft photons injected from external sources into the jet. Because of the large bulk Lorentz factor of the jet, the energy of soft photons…

Astrophysics · Physics 2009-11-10 Masaaki Kusunose , Fumio Takahara

We evaluate the shadowing effect in deeply virtual and real Compton scattering on nuclei in the framework of the color dipole model. We rely on the soft photon wave function derived in the instanton vacuum model, and employ the impact…

High Energy Physics - Phenomenology · Physics 2010-05-25 B. Z. Kopeliovich , Ivan Schmidt , M. Siddikov

The intensity and energy spatial distributions of collimated laser Compton scattering (LCS) $\gamma$-ray beams and of the associated bremsstrahlung beams have been investigated as functions of the electron beam energy, electron beam phase…

Instrumentation and Detectors · Physics 2023-06-21 Takashi Ari-Izumi , Ioana Gheorghe , Dan Filipescu , Satoshi Hashimoto , Shuji Miyamoto , Hiroaki Utsunomiya

The cross section for photon neutrino scattering is calculated in the standard model assuming that the neutrino is massless and that the center of mass energy is small compared to any charged lepton mass. Although the scattered photons can…

High Energy Physics - Phenomenology · Physics 2009-10-22 Duane A. Dicus , Wayne W. Repko

The influence of relativistic contributions to elastic electron deuteron scattering is studied systematically at low and intermediate momentum transfers ($Q^2\leq 30$ fm$^{-2}$). In a $(p/M)$-expansion, all leading order relativistic…

Nuclear Theory · Physics 2009-10-31 Hartmuth Arenhoevel , Frank Ritz , Thomas Wilbois

Current constraints on photon velocity variability are summarized and displayed in terms of an energy dependent vacuum refraction index. It is shown that the energy-momentum balance of high energy Compton scattering is very sensitive to the…

High Energy Physics - Experiment · Physics 2012-11-13 V. Gharibyan

We give an overview of low-energy Compton scattering (gamma^(*) p --> gamma p) with a real or virtual incoming photon. These processes allow the investigation of one of the fundamental properties of the nucleon, i.e. how its internal…

Nuclear Experiment · Physics 2011-09-23 E. J. Downie , H. Fonvieille