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相关论文: Magnetars

200 篇论文

We describe a sample of thermally emitting neutron stars discovered in the ROSAT All-Sky Survey. We discuss the basic observational properties of these objects and conclude that they are nearby, middle-aged pulsars with moderate magnetic…

天体物理学 · 物理学 2009-06-23 D. L. Kaplan

In this review we discuss self-consistent methods to calculate the global structure of strongly magnetised neutron stars within the general-relativistic framework. We outline why solutions in spherical symmetry cannot be applied to strongly…

核理论 · 物理学 2021-09-01 Debarati Chatterjee , Jerome Novak , Micaela Oertel

Results of the mathematical treatment of the radiation by the superluminally moving current sheet in the magnetosphere of a neutron star, which was presented in Ardavan (2021, {\it MNRAS}, {\bf 507}, 4530), are explained here in more…

高能天体物理现象 · 物理学 2024-03-01 Houshang Ardavan

We review the polarization properties of X-ray emission from highly magnetized neutron stars, focusing on emission from the stellar surfaces. We discuss how x-ray polarization can be used to constrain neutron star magnetic field and…

高能天体物理现象 · 物理学 2016-06-01 Dong Lai , Wynn C. G. Ho , Matthew van Adelsberg , Chen Wang , Jeremy S. Heyl

Ever since the discovery of the Crab and Vela pulsars in their respective Supernova Remnants, our understanding of how neutron stars manifest themselves observationally has been dramatically shaped by the surge of discoveries and dedicated…

高能天体物理现象 · 物理学 2018-01-17 Samar Safi-Harb

In the seconds after core collapse and explosion, a thermal neutrino-driven wind emerges from the cooling, deleptonizing newly-born neutron star. If the neutron star has a large-scale magnetar-strength surface magnetic field and millisecond…

天体物理学 · 物理学 2010-11-11 Todd A. Thompson

It is generally believed that magnetic fields of some neutron stars, the so-called magnetars, are enormously strong, up to 10^{14} - 10^{15} G. Recent investigations have shown that the atmospheres of magnetars are possibly composed of…

天体物理学 · 物理学 2009-11-11 George G. Pavlov , Victor G. Bezchastnov

Magneto-elastic oscillations of neutron stars are believed to explain observed quasi-periodic oscillations (QPOs) in the decaying tail of the giant flares of highly magnetized neutron stars (magnetars). Strong efforts of the theoretical…

高能天体物理现象 · 物理学 2018-01-10 Michael Gabler , Pablo Cerdá-Durán , Alexei Mate , Nikolaos Stergioulas , José A. Font , Ewald Müller

We study the equation of state, polarization and radiation properties for nonideal, strongly magnetized plasmas which compose outer envelopes of magnetic neutron stars. Detailed calculations are performed for partially ionized hydrogen…

天体物理学 · 物理学 2008-11-26 A. Y. Potekhin , G. Chabrier , D. Lai , W. C. G. Ho , M. van Adelsberg

We study the effect of magnetic field on the dominant neutrino emission processes in neutron stars.The processes are first calculated for the case when the magnetic field does not exceed the critical value to confine electrons to the lowest…

高能物理 - 唯象学 · 物理学 2015-06-25 Ashok Goyal , V. K. Gupta , Kanupriya , Vinita Tuli

We have studied the various properties of magnetically deformed atoms, replaced by deformed Wigner-Seitz cells, at the outer crust region of strongly magnetized neutron stars (magnetars) using a relativistic version of Thomas-Fermi model in…

太阳与恒星天体物理 · 物理学 2009-11-10 Arpita Ghosh , Somenath Chakrabarty

Magnetars are neutron stars with very strong magnetic fields on the order of $10^{13}$ to $10^{15}$ G. Young magnetars with oppositely-oriented magnetic fields and spin moments may emit high-energy (HE) neutrinos from their polar caps as…

高能天体物理现象 · 物理学 2021-07-20 Ava Ghadimi , Marcos Santander

Neutron stars are the densest objects known in our visible universe. Properties of matter inside a neutron star are encoded in its equation of state, which has wide-ranging uncertainty from a theoretical perspective. With the current…

高能天体物理现象 · 物理学 2022-04-20 Bhaskar Biswas

Compact stars with strong magnetic fields (magnetars) have been observationally determined to have surface magnetic fields of order of 10^{14}-10^{15} G, the implied internal field strength being several orders larger. We study the equation…

高能天体物理现象 · 物理学 2017-03-22 Monika Sinha , Banibrata Mukhopadhyay , Armen Sedrakian

Among a dozen known magnetar candidates there are no binary objects. As an estimate of a fraction of binary neutron stars is about 10% it is reasonable to address the question of solitarity of magnetars, to estimate theoretically the…

天体物理学 · 物理学 2015-06-24 S. B. Popov , M. E. Prokhorov

We investigate the effects of strong magnetic fields upon the gross properties of neutron and protoneutron stars. In our calculations, the neutron star matter was approximated by the pure neutron matter. Using the lowest order constrained…

太阳与恒星天体物理 · 物理学 2015-06-11 Gholam Hossein Bordbar , Zeinab Rezaei

The properties of matter are significantly modified by strong magnetic fields, $B>>2.35\times 10^9$ Gauss ($1 G =10^{-4} Tesla$), as are typically found on the surfaces of neutron stars. In such strong magnetic fields, the Coulomb force on…

天体物理学 · 物理学 2008-11-26 Dong Lai

Neutron stars are one of the most mysterious wonders in the Universe. Their extreme densities hint at new and exotic physics at work within. Gravitational waves could be the key to unlocking their secrets. In particular, a first detection…

广义相对论与量子宇宙学 · 物理学 2024-01-09 Neil Lu , Susan M. Scott , Karl Wette

The defining trait of magnetars, the most strongly magnetized neutron stars (NSs), is their transient activity in the X/$\gamma$-bands. In particular, many of them undergo phases of enhanced emission, the so-called outbursts, during which…

高能天体物理现象 · 物理学 2022-09-14 Davide De Grandis , Roberto Turolla , Roberto Taverna , Elisa Lucchetta , Toby S. Wood , Silvia Zane

In this paper we present a new result, namely that the primal magnetic field of the collapsed core during a supernova explosion will, as a result of the conservation of magnetic flux, receive a massive boost to more than 90 times its…

天体物理学 · 物理学 2008-11-26 Qiu-he Peng , Hao Tong