Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Gruber, D. E."'
Autor:
Persic, M., Rephaeli, Y., Braito, V., Cappi, M., Della Ceca, R., Franceschini, A., Gruber, D. E.
Publikováno v:
Astron.Astrophys. 419 (2004) 849-862
Based on recent work on spectral decomposition of the emission of star-forming galaxies, we assess whether the integrated 2-10 keV emission from high-mass X-ray binaries (HMXBs), L_{2-10}^{HMXB}, can be used as a reliable estimator of ongoing star fo
Externí odkaz:
http://arxiv.org/abs/astro-ph/0402568
Autor:
Coburn, W., Heindl, W. A., Rothschild, R. E., Gruber, D. E., Kreykenbohm, I., Wilms, J., Kretschmar, P., Staubert, R.
Publikováno v:
Astrophys.J. 580 (2002) 394-412
Using a consistent set of models, we parameterized the X-ray spectra of all accreting pulsars in the Rossi X-ray Timing Explorer database which exhibit Cyclotron Resonance Scattering Features (CRSFs, or cyclotron lines). These sources in our sample a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0207325
Autor:
Heindl, W. A., Coburn, W., Gruber, D. E., Rothschild, R. E., Kreykenbohm, I., Wilms, J., Staubert, R.
Publikováno v:
ApJL, 563:L35-L39, 2001 December 10
Observations of the transient accreting pulsar XTE J1946+274 made with the Rossi X-ray Timing Explorer during the course of the 1998 September-November outburst, reveal a cyclotron resonance scattering feature (or "cyclotron line") in the hard X-ray
Externí odkaz:
http://arxiv.org/abs/astro-ph/0112468
Autor:
Gruber, D. E., Heindl, W. A., Rothschild, R. E., Coburn, W., Staubert, R., Kreykenbohm, I., Wilms, J.
Publikováno v:
Astrophysical Journal 562, 449 (2001)
Five observations of the hard X-ray spectrum of Her X-1 from \xte show that the $\sim 41$ keV energy of the cyclotron scattering line is constant within statistics of a few percent per observtion. Comparison with other observations over many years in
Externí odkaz:
http://arxiv.org/abs/astro-ph/0112439
We report RXTE results of spectral analyses of three (Sco X-1, GX 349+2, and Cyg X-2) out of the 6 known Z sources, with emphasis in the hard X-ray emission. No hard X-ray tails were found for Cyg X-2 (< 8.4E-5 photons cm**-2 s**-1, 50-100 keV, 3 sig
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105201
Autor:
D'Amico, F., Heindl, W. A., Rothschild, R. E., Peterson, L. E., Gruber, D. E., Pelling, M., Tomsick, J. A.
Using the HEXTE experiment on-board the RXTE satellite, we performed a search for hard X-ray tails in Sco X-1 spectra. We found strong evidence for the presence of such a non-thermal component on several occasions. Using the PCA/RXTE we were able to
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101396
Autor:
Coburn, W., Heindl, W. A., Gruber, D. E., Rothschild, R. E., Staubert, R., Wilms, J., Kreykenbohm, I.
We have discovered a ~29 keV Cyclotron Resonant Scattering Feature (CRSF) in the X-Ray spectrum of 4U 0352+309 (X Per) using observations taken with the Rossi X-Ray Timing Explorer. 4U 0352+309 is a persistent low luminosity (L_x = 4.2x10^34 ergs/s)
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101110
We report the detection of a non-thermal hard X-ray component from Sco X-1 based upon the analysis of 20-220 keV spectra obtained with the HEXTE experiment on-board the RXTE satellite. We find that the addition of a power-law component to a thermal b
Externí odkaz:
http://arxiv.org/abs/astro-ph/0008279
Autor:
Heindl, W. A., Coburn, W., Gruber, D. E., Pelling, M., Rothschild, R. E., Kretschmar, P., Kreykenbohm, I., Wilms, J., Pottschmidt, K., Staubert, R.
In this paper, we summarize the RXTE measurements of cyclotron resonance scattering features in 8 accreting pulsars. The wide bandpass and modest resolution of the RXTE instruments make them ideal for measuring these generally broad features. In part
Externí odkaz:
http://arxiv.org/abs/astro-ph/0004300
Autor:
Heindl, W. A., Coburn, W., Gruber, D. E., Pelling, M., Rothschild, R. E., Wilms, J., Pottschmidt, K., Staubert, R.
We report phase resolved spectroscopy of the transient accreting pulsar, 4U0115+63. For the first time, more than two cylotron resonance scattering features are detected in the spectrum of an X-ray pulsar. The shape of the fundamental line appears to
Externí odkaz:
http://arxiv.org/abs/astro-ph/0004297