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We calculate the electromagnetic corrections to the isospin invariant mixing angle and to the two eigenphases for the $s$-, $p_{1/2}$- and $p_{3/2}$-partial waves for $\pi^- p$ elastic and charge exchange scattering. These corrections have…

High Energy Physics - Phenomenology · Physics 2007-10-18 A. Gashi , E. Matsinos , G. C. Oades , G. Rasche , W. S. Woolcock

We compute the spectra of cosmic-ray (CR) nuclei and antinuclei under a scenario where hadronic interaction processes inside supernova remnants (SNRs) can produce a diffusively-shock-accelerated "source component" of secondary particles.…

High Energy Astrophysical Phenomena · Physics 2018-07-31 Nicola Tomassetti , Alberto Oliva

Magnetic field amplification is needed to accelerate cosmic cays to PeV energies in supernova remants. Escaping cosmic rays trigger a return current in the plasma that drives a non-resonant hybrid instability. We run simulations in which we…

High Energy Astrophysical Phenomena · Physics 2012-09-17 K. M. Schure , A. R. Bell

New basis functions for 2 dimensional (2D) image analysis with a circular boundary (referred to as multipole analysis) are derived which are equal-area weighted. We present open access Python code hosted by GitHub, with which users can…

Instrumentation and Methods for Astrophysics · Physics 2026-05-06 D. A. Leahy , S. Ranasinghe , M. D. Filipovic , Z. J. Smeaton

We calculate synchrotron radio emission and gamma-ray emission due to bremsstrahlung, inverse-Compton scattering and $pi^0$-decay from the remnant of supernova which exploded in the circumstellar matter (CSM) formed by the progenitor's…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Takafumi Shimizu , Kuniaki Masai , Katsuji Koyama

Massive, rapidly-spinning magnetar remnants produced as a result of binary neutron star (BNS) mergers may deposit a fraction of their energy into the surrounding kilonova ejecta, powering a synchrotron radio signal from the interaction of…

As supernova remnants expand, their shock waves are freezing in and compressing the magnetic field lines they encounter; consequently we can use supernova remnants as magnifying glasses for their ambient magnetic fields. We will describe a…

Astrophysics · Physics 2009-11-13 Roland Kothes Jo-Anne Brown

Supernova remnants are believed to be the major contributors to Galactic cosmic rays. In this paper, we explore how the non-thermal emission from young remnants can be used to probe the production of energetic particles at the shock (both…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Gilles Ferrand , Anne Decourchelle , Samar Safi-Harb

It is shown that amplification of the magnetic field in supernova remnants (SNRs) occurs in all six objects where morphological measurements are presently available in the hard X-ray continuum at several keV. For the three archetypical…

Astrophysics · Physics 2008-11-26 H. J. Voelk , E. G. Berezhko , L. T. Ksenofontov

Supernova remnants (SNRs) are believed to be the major contributors to Galactic cosmic rays. The detection of non-thermal emission from SNRs demonstrates the presence of energetic particles, but direct signatures of protons and other ions…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Gilles Ferrand , Anne Decourchelle , Samar Safi-Harb

Context. Young supernova remnants (SNRs) exhibit narrow filaments of non-thermal X-ray emission whose widths can be limited either by electron energy losses or damping of the magnetic field. Aims. We want to investigate whether or not…

High Energy Astrophysical Phenomena · Physics 2012-08-28 Robert Rettig , Martin Pohl

In this paper we present the updated empirical radio surface-brightness-to-diameter ($\Sigma$--$D$) relation for Galactic supernova remnants (SNRs) calibrated using $110$ SNRs with reliable distances. We apply orthogonal fitting procedure…

Astrophysics of Galaxies · Physics 2020-01-22 B. Vukotić , A. Ćiprijanović , M. M. Vučetić , D. Onić , D. Urošević

This paper discusses several aspects of current research on high energy emission from supernova remnants, covering the following main topics: 1) The recent evidence for magnetic field amplification near supernova remnant shocks, which makes…

Astrophysics · Physics 2009-11-11 Jacco Vink

We present two-dimensional MHD simulations of the evolution of a young Type Ia supernova remnant during its interaction with an interstellar cloud of comparable size at impact. We include for the first time in such simulations explicit…

Astrophysics · Physics 2009-10-30 Byung-Il Jun , T. W. Jones

Matter effects on neutrino oscillations in both, a supernova and the Earth, change the observed supernova neutrino spectra. We calculate the expected number of supernova neutrino interactions for ICARUS, SK and SNO detectors as a function…

High Energy Physics - Phenomenology · Physics 2007-05-23 B. Bekman , J. Holeczek , J. Kisiel

We present the energy spectrum of antiproton cosmic ray (CR) component calculated on the basis of the nonlinear kinetic model of CR production in supernova remnants (SNR). The model includes reacceleration of already existing in…

High Energy Astrophysical Phenomena · Physics 2015-01-13 E. G. Berezhko , L. T. Ksenofontov

Supernova remnants (SNRs) are thought to be the most plausible sources of Galactic cosmic rays. One of the principal questions is whether they are accelerating particles up to the maximum energy of Galactic cosmic rays ($\sim$PeV). In this…

High Energy Astrophysical Phenomena · Physics 2023-10-31 Hiromasa Suzuki , Aya Bamba , Ryo Yamazaki , Yutaka Ohira

Natural supergravity models of new inflation are reconsidered as minimal inflationary models within slow-roll approximation. Their running spectral index is derived in a revised form with recent observational results and future refinements…

High Energy Physics - Phenomenology · Physics 2015-06-25 K. -I. Izawa

We describe an experimental installation for a new test of the weak equivalence principle for neutron. The device is a sensitive gravitational spectrometer for ultra-cold neutrons allowing to precisely compare the gain in kinetic energy of…

Instrumentation and Detectors · Physics 2015-12-09 G. V. Kulin , A. I. Frank , S. V. Goryunov , D. V. Kustov , P. Geltenbort , M. Jentschel , A. N. Strepetov , V. A. Bushuev

In this paper we present new empirical radio surface brightness-to-diameter ({\Sigma} - D) relations for supernova remnants (SNRs) in our Galaxy. We also present new theoretical derivations of the {\Sigma} - D relation based on…

Astrophysics of Galaxies · Physics 2017-04-05 M. Z. Pavlovic , D. Urosevic , B. Vukotic , B. Arbutina , U. D. Goker