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Related papers: Supernova remnants with magnetars: clues to magnet…

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We propose a new approach for studying the neutron star/supernova remnant associations, based on the idea that the supernova remnants (SNRs) can be products of an off-centered supernova (SN) explosion in a preexisting bubble created by the…

Astrophysics · Physics 2007-05-23 V. V. Gvaramadze

The mass of the stellar precursor of supernova (SN) 1987A and the burst of neutrinos observed at the moment of the explosion are consistent with the core-collapse formation of a neutron star. However, no compelling evidence for the presence…

High Energy Astrophysical Phenomena · Physics 2018-04-18 P. Esposito , N. Rea , D. Lazzati , M. Matsuura , R. Perna , J. A. Pons

Core-collapse supernovae are connected with formation of neutron stars. Part of the gravitation energy is transformed into the energy of the explosion, observed in SN II, SN Ib,c type supernovae. The mechanism of transformation is not…

Astrophysics · Physics 2007-05-23 G. S. Bisnovatyi-Kogan , S. G. Moiseenko , N. V. Ardeljan

The impact of the magnetic field on postbounce supernova dynamics of non-rotating stellar cores is studied by performing three-dimensional magnetohydrodynamics simulations with spectral neutrino transport. The explodability of strongly and…

High Energy Astrophysical Phenomena · Physics 2022-08-19 Jin Matsumoto , Yuta Asahina , Tomoya Takiwaki , Kei Kotake , Hiroyuki R. Takahashi

Magnetars are highly magnetised, isolated neutron stars with uncertain formation channels. They comprise a potentially significant fraction of the young neutron star population in the Milky Way, and are implicated in the explosion…

Following an initial explosion that might be launched either by magnetic interactions or neutrinos, a rotating magnetar radiating according to the classic dipole formula could power a very luminous supernova. While some 56Ni might be…

High Energy Astrophysical Phenomena · Physics 2015-05-14 S. E. Woosley

The observation of neutrinos from Supernova~1987A has confirmed the theoretical conjecture that these particles play a crucial role during the collapse of the core of a massive star. Only one per cent of the energy they carry away from the…

Astrophysics · Physics 2007-05-23 H. -Th. Janka

This meeting covered the range of cosmic explosions from solar flares to gamma-ray bursts. A common theme is the role of rotation and magnetic fields. A rigorous examination is underway to characterize systematic effects that might alter…

Astrophysics · Physics 2009-10-31 J. Craig Wheeler

Situation with highly magnetized neutron stars in binary systems is not yet certain. On the one hand, all best studied magnetars seem to be isolated objects. On the other, there are many claims based on model-dependent analysis of spin…

High Energy Astrophysical Phenomena · Physics 2023-03-15 S. B. Popov

We present a scenario of formation of strange stars due to spin-down of {\it rapidly rotating} neutron stars left after supernova explosions . By assuming a process where the total baryon mass is conserved but the angular momentum is lost…

Astrophysics · Physics 2009-11-10 Nobutoshi Yasutake , Masa-aki Hashimoto , Yoshiharu Eriguchi

Recently, a lack of supernova-associated long-duration gamma-ray burst (GRB 230307A) at such a low redshift $z=0.065$, but associated with a possible kilonova emission, has attracted great attention. Its heavy element nucleosynthesis and…

High Energy Astrophysical Phenomena · Physics 2024-02-19 ZhaoWei Du , HouJun Lü , Yong Yuan , Xing Yang , EnWei Liang

The prescient remark by Baade and Zwicky that supernovae beget neutron stars did little to prepare us for the remarkable variety of observational manifestations such objects display. Indeed, during the first thirty years of the empirical…

Astrophysics · Physics 2007-05-23 V. M. Kaspi , D. J. Helfand

We investigate the influence of magnetic fields on the evolution of binary neutron-star (BNS) merger remnants via three-dimensional (3D) dynamical-spacetime general-relativistic (GR) magnetohydrodynamic (MHD) simulations. We evolve a…

High Energy Astrophysical Phenomena · Physics 2020-10-29 Philipp Mösta , David Radice , Roland Haas , Erik Schnetter , Sebastiano Bernuzzi

Estimations of magnetic fields of neutron stars, observed as radio and X-ray pulsars, are discussed. It is shown, that theoretical and observational values for different types of radiopulsars are in good correspondence. Radiopulsars in…

High Energy Astrophysical Phenomena · Physics 2016-01-18 G. S. Bisnovatyi-Kogan

The binary neutron star merger GW170817/GRB170817A confirmed that at least some neutron star mergers are the progenitors of short gamma-ray bursts. Many short gamma-ray bursts have long-term x-ray afterglows that have been interpreted in…

High Energy Astrophysical Phenomena · Physics 2019-09-04 Paul D. Lasky , Nikhil Sarin , Greg Ashton

Quiescence and burst emission and relativistic particle winds of soft gamma-ray repeaters (SGRs) have been widely interpreted to result from ultrastrongly magnetized neutron stars. In this magnetar model, the magnetic energy and…

Astrophysics · Physics 2007-05-23 K. S. Cheng , Z. G. Dai

There is growing evidence that two classes of high-energy sources, the Soft Gamma Repeaters and the Anomalous X-ray Pulsars contain slowly spinning ``magnetars'', i.e. neutron stars whose emission is powered by the release of energy from…

Astrophysics · Physics 2009-11-13 Luigi Stella , Simone Dall'Osso , GianLuca Israel , Alberto Vecchio

Thermonuclear and core-collapse supernova remnants (SNRs) are the nebular leftovers of defunct stars. Their morphology and emission properties provide insights into the evolutionary history of the progenitor star. But while some SNRs are…

High Energy Astrophysical Phenomena · Physics 2023-01-18 P. F. Velazquez , D. M. -A. Meyer , A. Chiotellis , A. E. Cruz-Alvarez , E. M. Schneiter , J. C. Toledo-Roy , E. M. Reynoso , A. Esquivel

P-stars are compact stars made of up and down quarks in beta-equilibrium with electrons in a chromomagnetic condensate. P-stars are able to account for compact stars like RXJ 1856.5-3754 and RXJ 0720.4-3125, stars with radius comparable…

Astrophysics · Physics 2007-05-23 Paolo Cea

The evolution and genesis of Anomalous X-ray Pulsars and Soft Gamma ray Repeaters are investigated. The new arguments in favor of magnetar model are found. It is shown, that these objects are formed from more massive stars and responsible…

Astrophysics · Physics 2008-10-30 F. K. Kasumov , A. O. Allakhverdiev