Results 121 to 130 of about 54,876 (252)
A MODEL OF THE SPECTRAL EVOLUTION OF PULSAR WIND NEBULAE [PDF]
The Astrophysical Journal, 2010 Recent observations suggest that many old pulsar wind nebulae (PWNe) are bright TeV gamma-ray sources without a strong X-ray counterpart. In this paper, we study the spectral evolution of PWNe taking into account the energy which was injected when they were young for old PWNe.
Shuta J. Tanaka, Fumio Takahara
openaire +5 more sources
Pulsar Wind Nebulae with Thick Toroidal Structure [PDF]
, 2011 We investigate a class of pulsar wind nebulae that show synchrotron emission from a thick toroidal structure. The best studied such object is the small radio and X-ray nebula around the Vela pulsar, which can be interpreted as the result of interaction of a mildly supersonic inward flow with the recent pulsar wind.
arxiv +1 more source
VER J2227+608: A Hadronic PeVatron Pulsar Wind Nebula? [PDF]
Astrophysical Journal, 2019 We report the detection of GeV γ-ray emission from the very-high-energy γ-ray source VER J2227+608 associated with the “tail” region of supernova remnant (SNR) G106.3+2.7.
Y. Xin +4 more
semanticscholar +1 more source
Pulsar Wind Nebulae in Egret Error Boxes [PDF]
Astrophysics and Space Science, 2005 A remarkable number of pulsar wind nebulae (PWN) are coincident with EGRET gamma-ray sources. X-ray and radio imaging studies of unidentified EGRET sources have resulted in the discovery of at least 6 new pulsar wind nebulae (PWN). Stationary PWN (SPWN) appear to be associated with steady EGRET sources with hard spectra, typical for gamma-ray pulsars ...
Gaensler, BM +5 more
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Discovery of two candidate pulsar wind nebulae in very-high-energy gamma rays [PDF]
A&A 472, 489-495 (2007), 2007 We present the discovery of two very-high-energy gamma-ray sources in an ongoing systematic search for emission above 100 GeV from pulsar wind nebulae in survey data from the H.E.S.S. telescope array. Imaging Atmospheric Cherenkov Telescopes are ideal tools for searching for extended emission from pulsar wind nebulae in the very-high-energy regime. H.E.
arxiv +1 more source
The brightening of the pulsar wind nebula of PSR B0540−69 after its spin-down-rate transition [PDF]
Nature Astronomy, 2019 It is believed that an isolated pulsar loses its rotational energy mainly through a relativistic wind consisting of electrons, positrons and possibly Poynting flux1–3.
Mingyang Ge +8 more
semanticscholar +1 more source
HESS Observations of Pulsar Wind Nebulae [PDF]
AIP Conference Proceedings, 2005 6 pages, 3 figures, appeared in the proceedings of "Astrophysical Sources of High Energy Particles and Radiation", held in Torun, Poland, eds. T. Bulik, B.
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High Energy Studies of Pulsar Wind Nebulae [PDF]
, 2008 The extended nebulae formed as pulsar winds expand into their surroundings provide information about the composition of the winds, the injection history from the host pulsar, and the material into which the nebulae are expanding. Observations from across the electromagnetic spectrum provide constraints on the evolution of the nebulae, the density and ...
arxiv +1 more source
Energy-dependent nebula extent and spatially resolved spectra of the pulsar wind nebula 3C 58
, 2020 3C 58 is a pulsar wind nebula (PWN) that shows an interesting energy-dependent nebula extent and spatial variations of the photon index and surface brightness in the X-ray band.
F. Lu, Quan-Gui Gao, Li Zhang
semanticscholar +1 more source
A Pulsar Wind Nebula Embedded in the Kilonova AT 2017gfo Associated with GW170817/GRB 170817A [PDF]
Astrophysical Journal, 2019 The first detected gravitational wave GW170817 from a binary neutron star merger is associated with an important optical transient AT 2017gfo, which is a direct observation of kilonova.
Jia Ren +7 more
semanticscholar +1 more source