Zobrazeno 1 - 10
of 73
pro vyhledávání: '"William A. Heindl"'
Autor:
Markus Kuster, Wayne Coburn, Jörn Wilms, Rüdiger Staubert, Peter Kretschmar, R. E. Rothschild, Ingo Kreykenbohm, William A. Heindl
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 132:612-615
We present a 200 ksec observation of the High Mass X-ray Binary GX 301–2 taken in 2000 November with the Rossi X-ray Timing Explorer during the pre-periastron flare and the actual periastron passage of the neutron star. To model the spectrum we use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be2f072274b33acf56024fe294a1bb4b
https://doi.org/10.1016/j.nuclphysbps.2004.04.105
https://doi.org/10.1016/j.nuclphysbps.2004.04.105
Autor:
William A. Heindl, Rüdiger Staubert, Michael A. Nowak, Guy G. Pooley, Jörn Wilms, Rob Fender, T. Gleissner, Katja Pottschmidt, Philip Uttley, Ron Remillard
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 132:420-423
Since 1997 we have monitored Cyg X-1 on a bi-weekly timescale with simultaneous X-ray and radio observations with RXTE and the Ryle telescope. We present results from this continuing campaign such as correlations between different timing parameters (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dc71cc070d69cf8c13fab9227119db7
https://doi.org/10.1016/j.nuclphysbps.2004.04.076
https://doi.org/10.1016/j.nuclphysbps.2004.04.076
Autor:
Rüdiger Staubert, Francisco Jablonski, William A. Heindl, Flavio D'Amico, R. E. Rothschild, John Heise, Ron Remillard, Eckhard Kendziorra, João Braga, James L. Matteson, Jörn Wilms, E. Kuulkers
Publikováno v:
Advances in Space Research. 34:2657-2661
We describe the ``Monitor e Imageador de Raios-X'' (MIRAX), an X-ray astronomy satellite mission proposed by the high energy astrophysics group at the National Institute for Space Research (INPE) in Brazil to the Brazilian Space Agency. MIRAX is an i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec79570d3fbf222bb76b818a552c607f
https://doi.org/10.1016/j.asr.2003.03.062
https://doi.org/10.1016/j.asr.2003.03.062
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 505:126-129
We discuss the design and performance of a large area (40 cm 2 ) CZT module for space-borne X-ray astronomy applications. This module is based upon the 32 mm ×32 mm CZT crossed strip detectors that have been under development at UCSD. This compact d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::761d7a7726c222341b0b72098ef963e5
https://doi.org/10.1016/s0168-9002(03)01034-9
https://doi.org/10.1016/s0168-9002(03)01034-9
Publikováno v:
The Astrophysical Journal. 588:L97-L100
We have discovered extended X-ray emission from the microquasar Cyg X-3 in archival Chandra X-ray Observatory observations. A 5" wide structure lies approximately 16" to the NE from the core point source and may be extended in that direction. This an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ec6f4de7a1bfb1d67554181c82ceb6f
https://doi.org/10.1086/375550
https://doi.org/10.1086/375550
Autor:
David M. Smith, William A. Heindl
Publikováno v:
The Astrophysical Journal. 578:L125-L128
We observed the "microquasar" GRS 1758-258 four times with Chandra. Two observations with the imaging detector of the High Resolution Camera (HRC-I) were made in 2000 September-October spanning an intermediate-to-hard spectral transition (identified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2189699ecc9414aabcec0de1926326ea
https://doi.org/10.1086/344700
https://doi.org/10.1086/344700
Publikováno v:
The Astrophysical Journal. 578:L129-L132
Five years of Rossi X-ray Timing Explorer (RXTE) observations of the Galactic black-hole candidates 1E 1740.7-2942 and GRS 1758-258 show a periodic modulation with amplitude 3-4% in each source at 12.73 +/- 0.05 dy and 18.45 +/- 0.10 dy, respectively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b0695a08367623adb06661dadcc39ac
https://doi.org/10.1086/344701
https://doi.org/10.1086/344701
Publikováno v:
The Astrophysical Journal. 554:L41-L44
Near the end of 2001 February, the black-hole candidate (BHC) GRS 1758-258 made an abrupt transition from a standard hard (low) state to a soft state. Unlike Cyg X-1 and other BHCs, whose luminosity increases during this transition, GRS 1758-258 was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42785d1605c60af0e7873b6fd9bf94b0
https://doi.org/10.1086/320928
https://doi.org/10.1086/320928
Publikováno v:
The Astrophysical Journal. 547:L147-L150
We report the detection of a nonthermal hard X-ray component from Sco X-1 based on the analysis of 20-220 keV spectra obtained with the High-Energy X-Ray Timing Experiment on board the Rossi X-Ray Timing Explorer satellite. We find that the addition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afb01327e0642a11eaf225ab854d04ea
https://doi.org/10.1086/318902
https://doi.org/10.1086/318902
Autor:
Vince McIntyre, A. Harmon, P. Durouchoux, Duncan Campbell-Wilson, R. K. Sood, Tasso Tzioumis, Michael A. Nowak, Rob Fender, Richard W. Hunstead, Stephane Corbel, William A. Heindl
Publikováno v:
Astrophysical Journal, 519, L165-L168. IOP Publishing Ltd.
We have observed the black hole candidate X-ray binary GX 339-4 at radio wavelengths before, during and after the 1998 high/soft X-ray state transition. We find that the radio emission from the system is strongly correlated with the hard X-ray emissi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7594d74afb14fd9547c491976b94dc1
https://doi.org/10.1086/312128
https://doi.org/10.1086/312128