Results 51 to 60 of about 10,429 (199)

Magnetars

Magnetars are the most magnetic objects in the Universe, serving as unique laboratories to test physics under extreme magnetic conditions that cannot be replicated on Earth. They were discovered in the late 1970s through their powerful X-ray flares, and were subsequently identified as neutron stars characterized by steady and transient emission across ...
Rea, Nanda, De Grandis, Davide
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

High energy neutrinos from magnetars

, 2003
Magnetars can accelerate cosmic rays to high energies through the unipolar effect, and are also copious soft photon emitters. We show that young, fast-rotating magnetars whose spin and magnetic moment point in opposite directions emit high energy ...
A. K. Harding, Bing Zhang, Dai Z. G., E. Waxman, P. Meszaros, Paczynski B., Thompson C., Z. G. Dai, Zavlin V. E.   +8 more
core   +1 more source

Beyond Accretion Limits: The Rise of Pulsating Gems

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT The discovery of several ultraluminous X‐ray sources exhibiting fast and rapidly evolving X‐ray pulsations unequivocally associates these sources with accreting neutron stars orbiting relatively massive companion stars (> 8M ⊙$$ {}_{\odot } $$).
Gian Luca Israel, Roberta Amato, Matteo Imbrogno, Nicoló Oreste Pinciroli Vago, on behalf of a Larger Team, Guillermo Andres Rodríguez Castillo, Andrea Belfiore, Luigi Stella, Matteo Bachetti, Felix Fürst, Dom Walton, Matthew Middleton, Murray Brightman, Fabio Pintore, Ciro Pinto, Silvia Conforti, Luca Zampieri, Chiara Salvaggio, Anna Wolter, Andrea Tiengo, Andrea De Luca, Paolo Esposito, Ruben Salvaterra, Hannah Earnshaw, Tim Roberts, Andres Gúrpide, Sara Motta   +26 more
wiley   +1 more source

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

Ambipolar Heating of Magnetars

The Astrophysical Journal, 2023
Magnetars, neutron stars thought to be with ultrastrong magnetic fields of 10 ^14–15 G, are observed to be much hotter than ordinary pulsars with ∼10 ^12 G, and additional heating sources are required.
Sachiko Tsuruta, Madeline J. Kelly, Ken’ichi Nomoto, Kanji Mori, Marcus Teter, Andrew C. Liebmann   +5 more
doaj   +1 more source

Probing the birth of fast rotating magnetars through high-energy neutrinos

, 2009
We investigate the high-energy neutrino emission expected from newly born magnetars surrounded by their stellar ejecta. Protons might be accelerated up to 0.1-100 EeV energies possibly by, e.g., the wave dissipation in the winds, leading to hadronic ...
B. Zhang, Bing Zhang, Kohta Murase, P. M. Woods, Peter Mészáros   +4 more
core   +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

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