Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Sanwal, D."'
Publikováno v:
Astrophys.J.643:1146-1150,2006
The superb spatial resolution of Chandra has allowed us to detect a 20''-long tail behind the Geminga pulsar, with a hard spectrum (photon index 1.0+/-0.2) and a luminosity (1.3+/-0.2) 10^{29} ergs/s in the 0.5 - 8 keV band, for an assumed distance o
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511364
Publikováno v:
Astrophys.J.636:848-858,2006
Near-infrared images of the center of the Cas A supernova remnant taken with the NICMOS 2 camera on HST using the F110W and F160W filters (~J & ~H bands) have magnitude limits of 26.2 and 24.6 respectively, but reveal no sources within a 1.2" radius
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509552
Publikováno v:
Astrophys.J. 606 (2004) 444-451
The X-ray source 1E 1207.4-5209 is a compact central object in the G296.5+10.0 supernova remnant. Its spin period of 424 ms, discovered with the Chandra X-ray Observatory, suggests that it is a neutron star. The X-ray spectrum of this radio-quiet pul
Externí odkaz:
http://arxiv.org/abs/astro-ph/0312096
Publikováno v:
New Astron.Rev. 47 (2003) 487-490
Chandra observations of the Vela pulsar-wind nebula (PWN) have revealed a jet in the direction of the pulsar's proper motion, and a counter-jet in the opposite direction, embedded in diffuse nebular emission. The jet consists of a bright, 8''-long in
Externí odkaz:
http://arxiv.org/abs/astro-ph/0306177
Publikováno v:
Astrophys.J.591:1157-1171,2003
Observations of the Vela pulsar-wind nebula (PWN) with the Chandra X-ray Observatory have revealed a complex, variable PWN structure, including inner and outer arcs, a jet in the direction of the pulsar's proper motion, and a counter-jet in the oppos
Externí odkaz:
http://arxiv.org/abs/astro-ph/0305510
We observed 1E 1207.4--5209, a neutron star in the center of the supernova remnant PKS 1209--51/52, with the ACIS detector aboard the Chandra X-ray observatory and detected two absorption features in the source spectrum. The features are centered nea
Externí odkaz:
http://arxiv.org/abs/astro-ph/0206195
Publikováno v:
Proc. of the 270-th Heraeus Seminar on Neutron Stars, Pulsars and Supernova Remnants, W. Becker, H. Lesch and J. Truemper (eds.), 2002, MPE Reports 278, p. 283
The outstanding capabilities of the Chandra X-ray observatory have greatly increased our potential to observe and analyze thermal radiation from the surfaces of neutron stars (NSs). Such observations allow one to measure the surface temperatures and
Externí odkaz:
http://arxiv.org/abs/astro-ph/0206024
Second Chandra observation of 1E 1207.4-5209, the central source of the supernova remnant PKS 1209-51/52, allowed us to confirm the previously detected period of 424 ms and, assuming a uniform spin-down, estimate the period derivative, Pdot (0.7-3)e-
Externí odkaz:
http://arxiv.org/abs/astro-ph/0203271
Autor:
Zavlin, V. E., Pavlov, G. G., Sanwal, D., Manchester, R. N., Truemper, J., Halpern, J. P., Becker, W.
We report on spectral and timing observations of the nearest millisecond pulsar J0437-4715 with Chandra. The pulsar spectrum, detected up to 7 keV, cannot be described by a simple one-component model. We suggest that it consists of two components, a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0112544
X-ray images of some young supernova remnants show bright point sources which have not been detected in radio, optical and gamma-ray bands. Despite the similarity of the X-ray spectra of these objects, they show a variety of temporal properties. Most
Externí odkaz:
http://arxiv.org/abs/astro-ph/0112322