Results 21 to 30 of about 1,603 (188)
Classification of unassociated fermi-LAT sources [PDF]
ITM Web of Conferences, 2022 The Large Area Telescope (LAT) on board NASA’s Fermi Gamma-ray Space telescope has detected 5788 sources in the 4FGL catalogue. Among them, 271 have been associated to pulsars, 3436 to blazars, and 1782 remain unassociated sources.
Meng Qiyu
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Gravitational waves from pulsars in the context of magnetic ellipticity
European Physical Journal C: Particles and Fields, 2017 In one of our previous articles we have considered the role of a time dependent magnetic ellipticity on the pulsars’ braking indices and on the putative gravitational waves these objects can emit.
José C. N. de Araujo +2 more
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Pulsar Electrodynamics — Pulsars and Puzzlers — [PDF]
International Astronomical Union Colloquium, 1996 Abstract A gedanken experiment presented here provides basic understanding of how the pulsar magnetosphere operates. We discuss current issues about the electric-field acceleration along magnetic field lines and subsequent pair creation, and also about the pulsar wind problem.
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Pulsar statistics - IV. Pulsar velocities [PDF]
Monthly Notices of the Royal Astronomical Society, 1997 We have used Monte Carlo simulations of the Galactic pulsar population to reassess the kinematics of radio pulsars in light of the large number of recently published proper motions and the revised distance model. Our modelling of the observational selection effects that distort the observed sample is far more detailed and self-consistent than that of ...
Lorimer, D. R. +2 more
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International Journal of Modern Physics D, 2006 Pulsars are wonderful gravitational probes. Their tiny size and stellar mass give their rotation periods a stability comparable to that of atomic frequency standards. This is especially true of the rapidly rotating "millisecond pulsars" (MSPs). Many of these rapidly rotating pulsars are in orbit with another star, allowing pulsar timing to probe ...
openaire +3 more sources
Polarimetric Evidence of the First White Dwarf Pulsar: The Binary System AR Scorpii
Galaxies, 2018 The binary star AR Scorpii was recently discovered to exhibit high amplitude coherent variability across the electromagnetic spectrum (ultraviolet to radio) at two closely spaced ∼2 min periods, attributed to the spin period of a white dwarf and the beat
David A.H. Buckley +4 more
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Recent H-alpha Results on Pulsar B2224+65’s Bow-Shock Nebula, the “Guitar” [PDF]
Journal of Astronomy and Space Sciences, 2016 We used the 4 m Discovery Channel Telescope (DCT) at Lowell observatory in 2014 to observe the Guitar Nebula, an Hα bow-shock nebula around the high-velocity radio pulsar B2224+65.
Timothy Dolch +5 more
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The environment of TeV halo progenitors
Astronomy & AstrophysicsContext. TeV haloes are extended sources of very-high-energy gamma rays found around some middle-aged pulsars. The emission spanning several tens of parsecs suggests an efficient confinement of the ultra-relativistic lepton pairs produced by pulsars in ...
Bourguinat Lioni-Moana +3 more
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Brazilian Journal of Physics, 2013 The high-energy sources known as anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are well explained as magnetars: isolated neutron stars powered by their own magnetic energy. After explaining why it is generally believed that the traditional energy sources at work in other neutron stars (accretion, rotation, residual heat) cannot ...
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Understanding the diffuse gamma ray emission of the milky way - from supernova remnants to dark matter [PDF]
Zbornik Matice Srpske za Prirodne Nauke, 2019 Diffuse gamma ray emission from the Galactic center at 2-3 GeV, as well as the 12 TeV gamma ray excess in the Galactic disk, remain open for debate and represent the missing puzzles in the complete picture of the high-energy Milky Way sky.
Petrović Jovana M. +2 more
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