Results 61 to 70 of about 12,989 (225)

The role of magnetar transient activity in time-domain and multimessenger astronomy

Frontiers in Astronomy and Space Sciences
Time-domain and multimessenger astronomy (TDAMM) involves the study of transient and time-variable phenomena across various wavelengths and messengers.
Michela Negro, George Younes, Zorawar Wadiasingh, Zorawar Wadiasingh, Zorawar Wadiasingh, Eric Burns, Aaron Trigg, Matthew Baring   +7 more
doaj   +1 more source

INTEGRAL and Magnetars

, 2007
Thanks to INTEGRAL's long exposures of the Galactic Plane, the two brightest Soft Gamma-Ray Repeaters, SGR 1806-20 and SGR 1900+14, have been monitored and studied in detail for the first time at hard-X/soft-gamma rays. SGR 1806-20, lying close to the Galactic Centre, and being very active in the past two years, has provided a wealth of new INTEGRAL ...
Götz, D., Mereghetti, S., Hurley, K., Mirabel, I., Esposito, P., Tiengo, A., Weidenspointner, G., Kienlin, A.   +7 more
openaire   +3 more sources

Millisecond Magnetars

, 2021
Two classes of X-ray/$γ$-ray sources, the Soft Gamma Repeaters and the Anomalous X-ray Pulsars have been identified with isolated, slowly spinning magnetars, neutron stars whose emission draws energy from their extremely strong magnetic field ($\sim 10^{15}-10^{16}$ G).
Dall'Osso, Simone, Stella, Luigi
openaire   +2 more sources

Pulse frequency fluctuations of magnetars [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
18 pages, 1 table, 4 figures, accepted for publication in ...
Cerri-Serim, D., Serim, M. M., Sahiner, S., Inam, S. C., Baykal, A.   +4 more
openaire   +3 more sources

Stochastic background of gravitational waves emitted by magnetars

, 2010
Two classes of high energy sources in our galaxy are believed to host magnetars, neutron stars whose emission results from the dissipation of their magnetic field.
Allen, Alpar, Bonazzola, Braithwaite, Braithwaite, Braithwaite, Ciolfi, Ciolfi, Colaiuda, Cutler, Dall’Osso, Davies, Duncan, Ferrari, Ferrari, Ferrari, Ferrario, Ferraro, Jones, Jones, Jones, Kinney, Kinney, Konno, Lander, Luigi Stella, Lyutikov, Marassi, Mereghetti, Omukai, Ostriker, Popov, Raffaella Schneider, Regimbau, Regimbau, Regimbau, Riccardo Ciolfi, Schneider, Schneider, Schneider, Schneider, Spergel, Stefania Marassi, Stella, Thompson, Thompson, Thompson, Tornatore, Turner, Valeria Ferrari, Woods   +50 more
core   +1 more source

A Brief, Biased View of Neutron Star Cooling

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT This is a concise and non‐technical review of topics related to neutron star (NS) cooling, for both young NSs and NSs in low‐mass x‐ray binaries. Neutrino emission from the NS core drives cooling rates, via different processes including Urca processes and pair breaking and formation at the neutron superfluid critical temperature.
Craig Heinke
wiley   +1 more source

Multipolar Electromagnetic Emission of Newborn Magnetars

The Astrophysical Journal
It is generally recognized that the electromagnetic multipolar emission from magnetars can be used to explain radiation from soft gamma repeaters or anomalous X-ray pulsars, but they have little impact on the spin-down of magnetars.
Yu Wang, Rahim Moradi, Liang Li
doaj   +1 more source

Chiral anomalous processes in magnetospheres of pulsars and black holes

European Physical Journal C: Particles and Fields, 2022
We propose that chirally asymmetric plasma can be produced in the gap regions of the magnetospheres of pulsars and black holes. We show that, in the case of supermassive black holes situated in active galactic nuclei, the chiral charge density and the ...
Eduard V. Gorbar, Igor A. Shovkovy
doaj   +1 more source

Characterizing the dynamical magnetosphere of the extremely slowly rotating magnetic O9.7 V star HD 54879 using rotational modulation of the Hα profile

Astronomische Nachrichten, Volume 345, Issue 4, May 2024.
Abstract The magnetic field in the O9.7 V star HD 54879 has been monitored for almost a decade. Spectropolarimetric observations reveal a rather strong mean longitudinal magnetic field that varies with a period of about 7.41 years. Observations in the Hα$$ \alpha $$ line show a variation with the same period, while the Hβ$$ \beta $$ line shows only ...
Manfred Küker, S. P. Järvinen, S. Hubrig, Ilya Ilyin, M. Schöller   +4 more
wiley   +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