Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Dyer, K. K."'
Publikováno v:
Astron.J.130:148-155,2005
We present VLA images of the supernova remnant (SNR) 3C~391 at 74, 330, and 1465 MHz. This remnant has been known for some time to exhibit a turnover in its integrated radio continuum spectrum at frequencies < 100 MHz, indicative of free-free absorpt
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503061
Publikováno v:
Astrophys.J.600:752-768,2004
We present a spatially resolved spectral analysis of full ASCA observations of the remnant of the supernova of 1006 AD. This remnant shows both nonthermal X-ray emission from bright limbs, generally interpreted as synchrotron emission from the loss-s
Externí odkaz:
http://arxiv.org/abs/astro-ph/0311362
Autor:
Brogan, C. L., Devine, K. E., Lazio, T. J., Kassim, N. E., Tam, C. R., Brisken, W. F., Dyer, K. K., Roberts, M. S. E.
We have imaged a 1 deg^2 field centered on the known Galactic supernova remnant (SNR) G11.2-0.3 at 74, 330, and 1465 MHz with the Very Large Array radio telescope (VLA) and 235 MHz with the Giant Metrewave Radio Telescope (GMRT). The 235, 330, and 14
Externí odkaz:
http://arxiv.org/abs/astro-ph/0310109
We present sub-arcminute resolution imaging of the Galactic supernova remnant W49B at 74 MHz (25") and 327 MHz (6"), the former being the lowest frequency at which the source has been resolved. While the 327 MHz image shows a shell-like morphology si
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105451
The remnant of SN 1006 has an X-ray spectrum dominated by nonthermal emission, and pre-ASCA observations were well described by a synchrotron calculation with electron energies limited by escape. We describe the results of a much more stringent test:
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010424
Autor:
Safi-Harb, S., Petre, R., Arnaud, K. A., Keohane, J. W., Borkowski, K. J., Dyer, K. K., Reynolds, S. P., Hughes, J. P.
We present an X-ray study of the radio bright supernova remnant (SNR) 3C 397 with ROSAT, ASCA, and RXTE. A central X-ray spot seen with the ROSAT High-Resolution Imager hints at the presence of a pulsar-powered component, and gives this SNR a composi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0007372
Supernova remnants may exhibit both thermal and nonthermal X-ray emission. Such remnants can be distinguished by the weakness of their X-ray lines, because of the presence of a strong nonthermal X-ray continuum. RCW 86 is a remnant with weak lines, r
Externí odkaz:
http://arxiv.org/abs/astro-ph/0006149
Galactic cosmic rays up to energies of around 10^15 eV are assumed to originate in supernova remnants (SNRs). The shock wave of a young SNR like SN 1006 AD can accelerate electrons to energies greater than 1 TeV, where they can produce synchrotron ra
Externí odkaz:
http://arxiv.org/abs/astro-ph/0001244
Autor:
Dyer, K. K., Reynolds, S. P.
Radio-bright, presumably young supernova remnants offer the opportunity of studying strong-shock physics and the nature of the interaction of ejected material with the surrounding medium. We use VLA and ROSAT images of the radio-bright supernova remn
Externí odkaz:
http://arxiv.org/abs/astro-ph/9906321
We present a 100 ks observation of the Galactic supernova remnant 3C 396 (G39.2-0.3) with the Chandra X-Ray Observatory that we compare with a 20 cm map of the remnant from the Very Large Array. In the Chandra images, a nonthermal nebula containing a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e84ceca90cff894889147db700f40d1d