Zobrazeno 1 - 10
of 483
pro vyhledávání: '"Gavriil, F. P."'
Publikováno v:
ApJ, 742, 4 (2011)
We present an analysis of the extended emission around the anomalous X-ray pulsar 1E 1547.0-5408 using four XMM-Newton observations taken with the source in varying states of outburst as well as in quiescence. We find that the extended emission flux
Externí odkaz:
http://arxiv.org/abs/1107.2952
Autor:
Ng, C. -Y., Kaspi, V. M., Dib, R., Olausen, S. A., Scholz, P., Guver, T., Ozel, F., Gavriil, F. P., Woods, P. M.
We present results from observations of the magnetar 1E 1547.0-5408 (SGR J1550-5418) taken with the Chandra X-ray Observatory and the Rossi X-ray Timing Explorer (RXTE) following the source's outbursts in 2008 October and 2009 January. During the tim
Externí odkaz:
http://arxiv.org/abs/1008.1165
Autor:
Hartog, P. R. den, Kuiper, L., Hermsen, W., Kaspi, V. M., Dib, R., Knoedlseder, J., Gavriil, F. P.
We present detailed spectral and temporal characteristics both in the hard X-ray (>10 keV) and soft X-ray (<10 keV) domains, obtained using data from INTEGRAL, XMM-Newton, ASCA and RXTE. The INTEGRAL time-averaged total spectrum shows a power-law lik
Externí odkaz:
http://arxiv.org/abs/0804.1640
Autor:
Gavriil, F. P., Gonzalez, M. E., Gotthelf, E. V., Kaspi, V. M., Livingstone, M. A., Woods, P. M.
We report detection of magnetar-like X-ray bursts from the young pulsar PSR J1846-0258, at the center of the supernova remnant Kes 75. This pulsar, long thought to be rotation-powered, has an inferred surface dipolar magnetic field of 4.9x10^13 G, hi
Externí odkaz:
http://arxiv.org/abs/0802.1704
Publikováno v:
Astrophys.J.716:1345-1355,2010
We present results obtained from X-ray observations of the anomalous X-ray pulsar (AXP) 4U 0142+61 taken between 2000-2007 using XMM-Newton, Chandra and Swift. In observations taken before 2006, the pulse profile is observed to become more sinusoidal
Externí odkaz:
http://arxiv.org/abs/0708.2756
We report on 10 years of monitoring of the 8.7-s Anomalous X-ray Pulsar 4U 0142+61 using the Rossi X-Ray Timing Explorer (RXTE). This pulsar exhibited stable rotation from 2000 March until 2006 February: the RMS phase residual for a spin-down model w
Externí odkaz:
http://arxiv.org/abs/0705.1973
Autor:
Dhillon, V. S., Marsh, T. R., Hulleman, F., van Kerkwijk, M. H., Shearer, A., Littlefair, S. P., Gavriil, F. P., Kaspi, V. M.
Publikováno v:
Mon.Not.Roy.Astron.Soc.363:609-614,2005
We present high-speed, multi-colour optical photometry of the anomalous X-ray pulsar 4U 0142+61, obtained with ULTRACAM on the 4.2-m William Herschel Telescope. We detect 4U 0142+61 at magnitudes of i'=23.7+-0.1, g'=27.2+-0.2 and u'>25.8, consistent
Externí odkaz:
http://arxiv.org/abs/astro-ph/0508039
Autor:
Woods, P. M., Kouveliotou, C., Gavriil, F. P., Kaspi, V. M., Roberts, M. S. E., Ibrahim, A., Markwardt, C. B., Swank, J. H., Finger, M. H.
Publikováno v:
Astrophys.J. 629 (2005) 985-997
We have discovered four X-ray bursts, recorded with the Rossi X-ray Timing Explorer Proportional Counter Array between 2003 September and 2004 April, that we show to originate from the transient magnetar candidate XTE J1810-197. The burst morphologie
Externí odkaz:
http://arxiv.org/abs/astro-ph/0505039
Autor:
Kaspi, V. M., Gavriil, F. P.
We review the observational properties of the class of young neutron stars known as "anomalous X-ray pulsars," emphasizing the tremendous progress that has been made in recent years, and explain why these objects, like the "soft gamma repeaters," are
Externí odkaz:
http://arxiv.org/abs/astro-ph/0402176
Autor:
Woods, P. M., Kaspi, V. M., Thompson, C., Gavriil, F. P., Marshall, H. L., Chakrabarty, D., Flanagan, K., Heyl, J., Hernquist, L.
Publikováno v:
Astrophys.J.605:378-399,2004
(abridged) An outburst of more than 80 individual bursts, similar to those seen from Soft Gamma Repeaters (SGRs), was detected from the Anomalous X-ray Pulsar (AXP) 1E 2259+586 in 2002 June. Coincident with this burst activity were gross changes in t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0310575