Results 61 to 70 of about 8,188 (190)
Multi-wavelength observations of 2HWC J1928+177: dark accelerator or new TeV gamma-ray binary?
, 2020 2HWC J1928+177 is a Galactic TeV gamma-ray source detected by the High Altitude Water Cherenkov (HAWC) Observatory up to ~ 56 TeV. The HAWC source, later confirmed by H.E.S.S., still remains unidentified as a dark accelerator since there is no apparent ...
An, Hongjun +11 more
core +1 more source
Spectral signature of a free pulsar wind in the gamma-ray binaries LS 5039 and LSI +61$\degr$303 [PDF]
, 2008 LS 5039 and LSI +61$\degr$303 are two binaries that have been detected in the TeV energy domain. These binaries are composed of a massive star and a compact object, possibly a young pulsar.
Aharonian +35 more
core +3 more sources
Gigahertz-peaked spectra pulsars in Pulsar Wind Nebulae [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We have carried out a detailed study of the spectral nature of six pulsars surrounded by Pulsar wind nebulae (PWN). The pulsar flux density were estimated using the interferometric imaging technique of the Giant Metrewave Radio Telescope at three frequencies 325 MHz, 610 MHz and 1280 MHz. The spectra showed a turnover around gigahertz frequency in four
Karolina Rożko +4 more
openaire +3 more sources
A candidate optical counterpart to the middle-aged gamma-ray pulsar PSR J1741-2054 [PDF]
, 2016 We carried out deep optical observations of the middle-aged $\gamma$-ray pulsar PSR J1741-2054 with the Very Large Telescope (VLT). We identified two objects, of magnitudes $m_v=23.10\pm0.05$ and $m_v=25.32\pm0.08$, at positions consistent with the very ...
Belfiore, A. +9 more
core +2 more sources
Particle acceleration in Pulsars and Pulsar Wind Nebulae
, 2022 These notes summarise the contents of the lectures I delivered at the International School of Physics "Enrico Fermi" on "Foundations of Cosmic Ray Astrophysics". The lectures were dealing with the physics of Pulsars and Pulsar Wind Nebulae (PWNe) in the Cosmic Ray (CR) perspective.
openaire +3 more sources
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.
openaire +3 more sources
X-RAY EVOLUTION OF PULSAR WIND NEBULAE [PDF]
The Astrophysical Journal, 2010 During the search for counterparts of very-high-energy gamma-ray sources, we serendipitously discovered large, extended, low surface brightness emission from PWNe around pulsars with the ages up to ~100 kyrs, a discovery made possible by the low and stable background of the Suzaku X-ray satellite.
Bamba, A. +6 more
openaire +4 more sources
Pulsar wind nebulae of runaway massive stars
Monthly Notices of the Royal Astronomical Society: Letters, 2022 ABSTRACT A significant fraction of massive stars move at speed through the interstellar medium of galaxies. After their death as core-collapse supernovae, a possible final evolutionary state is that of a fast-rotating magnetized neutron star, shaping its circumstellar medium into a pulsar wind nebula.
D M-A Meyer, Z Meliani
openaire +3 more sources
Pulsar Wind Nebulae with Thick Toroidal Structure
, 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 ...
Abdo +19 more
core +1 more source
G359.95-0.04: Pulsar Candidate Near Sgr A* [PDF]
, 2005 We report the discovery of a prominent nonthermal X-ray feature located near the Galactic center that we identify as an energetic pulsar wind nebula. This feature, G359.95-0.04, lies 1 lyr north of Sgr A* (in projection), is comet-like in shape, and has ...
Gotthelf, E. V., Lu, F. J., Wang, Q. D.
core +3 more sources