Results 91 to 100 of about 17,260 (230)

A systematic study of soft X-ray pulse profiles of magnetars in quiescence [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Magnetars are neutron stars with extremely high surface magnetic fields. They show diverse X-ray pulse profiles in the quiescent state. We perform a systematic Fourier analysis of their soft X-ray pulse profiles.
Chin-Ping Hu, C. Ng, W. Ho
semanticscholar   +1 more source

Heavy Elements and Electromagnetic Transients from Neutron Star Mergers

Annalen der Physik, Volume 536, Issue 2, February 2024.
Astro‐(physics) has made major leaps forward through the combined information provided by both gravitational waves and electromagnetic emission from the first detected neutron star merger event. This review provides an up‐to‐date overview of today's understanding of neutron star mergers and their electromagnetic emission and it discusses possible ...
Stephan Rosswog, Oleg Korobkin
wiley   +1 more source

Neutron stars as photon double-lenses: Constraining resonant conversion into ALPs

Physics Letters B, 2023
Axion-photon conversion is a prime mechanism to detect axion-like particles that share a coupling to the photon. We point out that in the vicinity of neutron stars with strong magnetic fields, magnetars, the effective photon mass receives comparable but ...
Kyrylo Bondarenko, Alexey Boyarsky, Josef Pradler, Anastasia Sokolenko   +3 more
doaj   +1 more source

Magnetar outbursts: an observational review

, 2011
Transient outbursts from magnetars have shown to be a key property of their emission, and one of the main way to discover new sources of this class. From the discovery of the first transient event around 2003, we now count about a dozen of outbursts ...
A. Hewish, A.M. Beloborodov, B Paczynski, B. Kern, B.M. Gaensler, C Thompson, C. Kouveliotou, D.A. Frail, D.M. Palmer, E.V. Gotthelf, F. Camilo, F. Hulleman, F.P. Gavriil, J.G. Laros, K. Hurley, L. Nobili, M Mandea, M. Burgay, M.G. Baring, P Campbell, P.B. Cameron, P.M. Woods, RN Manchester, S. Mereghetti, S. Mereghetti, T. Murakami, US Inan, W Baade, Z. Wang   +28 more
core   +1 more source

Seltene und extreme Supernovae

Physik in unserer Zeit, Volume 55, Issue 1, Page 40-46, January 2024.
Robotische Teleskope entdecken eine zunehmende Vielfalt transienter Strahlungsquellen, deren ungewöhnliche Eigenschaften neue Arten von Sternexplosionen nahelegen. Obwohl die absolute Häufigkeit solcher Ereignisse sehr klein ist, erlaubt ihre extreme Helligkeit relativ häufige Sichtungen, stellt aber theoretische Modelle vor große Herausforderungen ...
Hans‐Thomas Janka
wiley   +1 more source

Neutron star bulk viscosity, ‘spin-flip’ and GW emission of newly born magnetars [PDF]

Monthly notices of the Royal Astronomical Society, 2018
The viscosity-driven "spin-flip" instability in newborn magnetars with interior toroidal magnetic fields is re-examined. We calculate the bulk viscosity coefficient ($\zeta$) of cold, $npe \mu$ matter in neutron stars (NS), for selected values of the ...
S. Dall’Osso, L. Stella, C. Palomba
semanticscholar   +1 more source

Role of Time‐Varying Magnetic Field on QGP Equation of State

Advances in High Energy Physics, Volume 2024, Issue 1, 2024.
The phase diagram of quantum chromodynamics (QCD) and its associated thermodynamic properties of quark‐gluon plasma (QGP) are studied in the presence of time‐dependent magnetic field. The study plays a pivotal role in the field of cosmology, astrophysics, and heavy‐ion collisions. In order to explore the structure of quark‐gluon plasma to deal with the
Yogesh Kumar, Poonam Jain, Pargin Bangotra, Vinod Kumar, D. V. Singh, S. K. Rajouria, Bhartendu K. Singh   +6 more
wiley   +1 more source

Deep Searches for Radio Pulsations and Bursts from Four Magnetar and a Magnetar-like Pulsar with FAST

The Astrophysical Journal
We report on radio observations of four magnetars SGR 0501+4516, Swift 1834.9–0846, 1E 1841–045, SGR 1900+14, and a magnetar-like pulsar PSR J1846–0258 with the Five-hundred-meter Aperture Spherical radio Telescope at 1250 MHz.
Juntao Bai, Na Wang, Shi Dai, Shuangqiang Wang, Jianping Yuan, Wenming Yan, Lunhua Shang, Xin Xu, Shijun Dang, Zhen Zhang   +9 more
doaj   +1 more source

X-ray Polarization from Magnetar Sources

Galaxies
The launch of the IXPE telescope in late 2021 finally made polarization measurements in the 2–8keV band a reality, more than 40 years after the pioneering observations of the OSO-8 satellite.
Roberto Taverna , Roberto Turolla 
doaj   +1 more source

Heating in Magnetar Crusts from Electron Captures

Universe, 2021
The persistent thermal luminosity of magnetars and their outbursts suggest the existence of some internal heat sources located in their outer crust. The compression of matter accompanying the decay of the magnetic field may trigger exothermic electron ...
Nicolas Chamel, Anthea Francesca Fantina, Lami Suleiman, Julian-Leszek Zdunik, Pawel Haensel   +4 more
doaj   +1 more source