Results 51 to 60 of about 3,165 (200)

QED plasma and magnetars [PDF]

Journal of Cosmology and Astroparticle Physics, 2016
5 pages, v2: references added, formatting ...
Freytsis, Marat, Gralla, Samuel E.
openaire   +2 more sources

THE McGILL MAGNETAR CATALOG [PDF]

The Astrophysical Journal Supplement Series, 2014
24 pages, 8 tables, 16 figures. Accepted for publication in The Astrophysical Journal Supplement Series.
Olausen, S. A., Kaspi, V. M.
openaire   +2 more sources

Constraining Radio Emission from Magnetars [PDF]

, 2012
We report on radio observations of five magnetars and two magnetar candidates carried out at 1950 MHz with the Green Bank Telescope in 2006-2007. The data from these observations were searched for periodic emission and bright single pulses.
Dib, R., Kaspi, V.M., Lazarus, P., Champion, D., Hessels, J.W.T.   +4 more
core   +1 more source

An overview of light ray deflection calculation by magnetars in nonlinear electrodynamics

Қарағанды университетінің хабаршысы. Физика сериясы
Due to the lack of experimental confirmation of the effects of nonlinear electrodynamics (NED) of vacuum on the electromagnetic wave, it remains the most pressing issue. One of the most optimal media for studying these effects, occurring in astrophysics,
Н. Бейсен, М. Абишев, С. Тоқтарбай, Т. Ерназаров, М. Хасанов, Д. Утепова, М. Алимкулова, А. Абдуали   +7 more
doaj   +1 more source

On the initial spin periods of magnetars born in weak supernova explosions and their gravitational wave radiation

European Physical Journal C: Particles and Fields
The initial spin periods of newborn magnetars are strongly associated with the origin of their strong magnetic fields, both of which can affect the electromagnetic radiation and gravitational waves (GWs) emitted at their birth. Combining the upper limit $
Yu-Long Yan, Quan Cheng, Xiao-Ping Zheng, Xia-Xia Ouyang   +3 more
doaj   +1 more source

A Phenomenological Model of the Magnetic Field Re-Emergence in Magnetars and Discrepancy Between the Kinematic and Characteristic Ages

Universe
Robust age measurements for isolated neutron stars (NSs) are not easily available. That is why the characteristic age τch=P/2P˙ is often used as a proxy. Here, P is the spin period of the NS and P˙ is the time derivative of P.
Rostislav D. Nikandrov, Sergei B. Popov
doaj   +1 more source

Charged Anisotropic Compact Stars in f(R, ϕ, X) Gravity: A Class I Embedding Approach With Reissner–NordstrÖm Exterior

Advances in High Energy Physics, Volume 2026, Issue 1, 2026.
This work examines the physical characteristics of charged, anisotropic compact spheres within the framework of f(R, ϕ, X) modified gravity. Starting from a static, spherically symmetric spacetime, we employ an Adler‐type ansatz for the temporal metric component gtt.
Adnan Malik, Fatemah Mofarreh, Ayesha Almas, Wedad Albalawi, Aishah Alshehri, Mohammad Rezwan Habib   +5 more
wiley   +1 more source

Whistler Chorus Amplification in the Magnetosphere: The Nonlinear Free‐Electron Laser Model and the Ginzburg‐Landau Equation

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract We present a novel nonlinear model for whistler‐mode chorus amplification based on the free‐electron laser (FEL) mechanism. First, we derive the nonlinear collective variable equations for the whistler‐electron interaction. Consistent with in situ satellite observations, these equations predict that a small seed wave can undergo exponential ...
Brandon Bonham, Amitava Bhattacharjee
wiley   +1 more source

Magnetar Spin-Down

The Astrophysical Journal, 1999
10 pages, 1 figure, accepted for Astrophysical Journal Letters, typos ...
Harding, Alice K., Contopoulos, Ioannis, Kazanas, Demosthenes   +2 more
openaire   +3 more sources

Upper Limits on the Radio Pulses from Magnetars and a Central Compact Object with FAST

The Astrophysical Journal
Magnetars and central compact objects (CCOs) are subgroups of neutron stars that show a number of properties distinguished from canonical radio pulsars. We performed radio observations of three magnetars, SGR 0418+5729, 1E 2259+586, and 4U 0142+61, and a
Wan-Jin Lu, Ping Zhou, Pei Wang, Yi-Xuan Shao, Xiang-dong Li, Jacco Vink, Di Li, Yang Chen   +7 more
doaj   +1 more source