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Related papers: Quark-nova remnants III:Application to RRATs

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Many supernova remnants (SNRs) are characterized by a knotty ejecta structure. The Vela SNR is an excellent example of remnant in which detached clumps of ejecta are visible as X-ray emitting bullets that have been observed and studied in…

High Energy Astrophysical Phenomena · Physics 2015-06-12 M. Miceli , S. Orlando , F. Reale , F. Bocchino , G. Peres

We briefly reviewed some recent progress on the studies of supernova remnants (SNRs), including the radio SNRs (the structure, polarization, spectrum etc.), observational characteristics of X-ray emission, pulsar wind nebulae (PWNe),…

High Energy Astrophysical Phenomena · Physics 2009-09-03 Jian-Wen Xu

Recent studies of fast radio bursts (FRBs) have led to many theories associating them with young neutron stars. If this is the case, then the presence of supernova ejecta and stellar winds provide a changing dispersion measure (DM) and…

High Energy Astrophysical Phenomena · Physics 2018-08-01 Anthony L. Piro , B. M. Gaensler

One of the most studied objects in astronomy, the Crab Nebula, is the remnant of the historical supernova SN 1054. Historical observations of the supernova imply a typical supernova luminosity, but contemporary observations of the remnant…

High Energy Astrophysical Phenomena · Physics 2024-12-03 Conor M. B. Omand , Nikhil Sarin , Tea Temim

Here I will review the high time resolution radio sky, focusing on millisecond scales. This is primarily occupied by neutron stars, the well-known radio pulsars and the recently identified group of transient sources known as Rotating RAdio…

Solar and Stellar Astrophysics · Physics 2010-08-24 E. F. Keane

We consider the accretion model for anomalous X-ray pulsars proposed recently by Chatterjee, Hernquist and Narayan, in which the emission is powered by accretion from a fossil disk formed by the fallback of material from a supernova…

Astrophysics · Physics 2009-10-31 Pinaki Chatterjee , Lars Hernquist

X-Ray bursts (XRBs) are powerful thermonuclear events on the surface of accreting neutron stars (NSs), which can synthesize intermediate-mass elements. Although the high surface gravity prevents an explosive ejection, a small fraction of…

High Energy Astrophysical Phenomena · Physics 2024-11-18 Yago Herrera , Daniel Muñoz Vela , Glòria Sala , Jordi José , Yuri Cavecchi

Some of the radio galaxies show distortion in their jets, forming tailed or winged sources. X-shaped radio galaxies are a subclass of winged sources formation mechanism of which is still unclear. The focus of this work is to understand…

Astrophysics of Galaxies · Physics 2022-05-25 Gourab Giri , Bhargav Vaidya , Paola Rossi , Gianluigi Bodo , Dipanjan Mukherjee , Andrea Mignone

In a previous paper (Ouyed et al. 2004) we presented a new model for soft gamma-ray repeaters (SGR), based on the onset of colour superconductivity in quark stars. In this model, the bursts result from the reorganization of the exterior…

Astrophysics · Physics 2008-11-26 Rachid Ouyed , Brian Niebergal , Wolfgang Dobler , Denis Leahy

Classical novae occur on the surface of an accreting white dwarf in a binary system. After ejection of a fraction of the envelope and when the expanding shell becomes optically thin to X-rays, a bright source of supersoft X-rays arises,…

High Energy Astrophysical Phenomena · Physics 2017-05-10 G. Sala , J. U. Ness , M. Hernanz , J. Greiner

[Abridged] By appealing to a Quark-Nova (QN; the explosive transition of a neutron star to a quark star) in the wake of a core-collapse Supernova explosion of a massive star, we develop a unified model for long duration Gamma-ray Bursts…

High Energy Astrophysical Phenomena · Physics 2020-03-11 Rachid Ouyed , Denis Leahy , Nico Koning

Supernova explosions and their remnants (SNRs) drive important feedback mechanisms that impact considerably the galaxies that host them. Then, the knowledge of the SNRs evolution is of paramount importance in the understanding of the…

Astrophysics of Galaxies · Physics 2019-06-26 Santiago Jimenez , Guillermo Tenorio-Tagle , Sergiy Silich

Stellar explosions such as novae and supernovae produce most of the heavy elements in the Universe. Although the onset of novae from runaway thermonuclear fusion reactions on the surface of a white dwarf in a binary star system is…

Astrophysics · Physics 2009-11-11 J. L. Sokoloski , G. J. M. Luna , K. Mukai , Scott J. Kenyon

Strong shocks occurring in supernova remnants (SNRs), and their interaction with an often anisotropic surrounding medium, make SNRs ideal laboratories for studying the production and acceleration of cosmic rays (CRs). Due to their complex…

For about half a century the radio pulsar population was observed to spin in the ~0.002-12s range, with different pulsar classes having a spin-period evolution that differs substantially depending on their magnetic fields or past accretion…

High Energy Astrophysical Phenomena · Physics 2022-08-17 Michele Ronchi , Nanda Rea , Vanessa Graber , Natasha Hurley-Walker

Shell-type supernova remnants (SNRs) exhibit correlations between radio surface brightness, SNR diameter, and ambient medium density. We investigate these correlations, to extract useful information about the typical evolutionary stage of…

High Energy Astrophysical Phenomena · Physics 2015-05-14 R. Bandiera , O. Petruk

Recent nonthermal X-ray and gamma-ray observations, attributed to electron emission processes, for the first time give an experimental confirmation that electrons are accelerated on SNR shocks up to the energy 10^{14} eV. We have no direct…

Astrophysics · Physics 2007-05-23 O. Petruk

The observations of radio emission from SNR~1987A can be accounted for on the basis of diffusive shock acceleration of electrons by the supernova blast wave. However, with this interpretation the observed spectral index implies that the…

Astrophysics · Physics 2016-08-30 P. Duffy , Lewis Ball , J. G. Kirk

Supersoft X-ray sources (SSSs) are characterized by persistent thermonuclear burning on the surfaces of white dwarfs (WDs).The standard model requires high mass transfer rates of $\sim 10^{-7}\, {\rm M_{\odot}}\,yr^{-1}$ from massive…

High Energy Astrophysical Phenomena · Physics 2025-12-18 Weitao Zhao , Xiangcun Meng , Yingzhen Cui , Yunlang Guo

The dim isolated neutron stars (XDINs) have periods in the same range as the anomalous X-ray pulsars (AXPs) and the soft gamma-ray repeaters (SGRs). We apply the fallback disk model, which explains the period clustering and other properties…

High Energy Astrophysical Phenomena · Physics 2015-06-22 U. Ertan , S. Caliskan , O. Benli , M. A. Alpar
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