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Observation of X‐Ray Variability in the BL Lacertae Object 1ES 1959+65

Autor: G. Shabad, G. Godfrey, Michael T. Wolff, W. B. Focke, Kent S. Wood, Pablo M. Saz Parkinson, Paul Hertz, Reba M. Bandyopadhyay, E. D. Bloom, Greg Madejski, K. T. Reilly, B. Giebels, Jeffrey D. Scargle, M. N. Lovellette, Daryl J. Yentis, Paul S. Ray, Michael P. Kowalski, Gilbert G. Fritz

Publikováno v: The Astrophysical Journal. 571:763-770

This paper reports X-ray spectral observations of a relatively nearby z = 0.048 BL Lacertae (BL Lac) object 1ES1959+650, which is a potential TeV emitter. The observations include 31 short pointings made by the Unconventional Stellar Aspect (USA) Exp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b311741f6cdc78e016f0da39a816f5de
https://doi.org/10.1086/340065

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USA Experiment Observation of Spectral and Timing Evolution during the 2000 Outburst of XTE J1550−564

Autor: Gilbert G. Fritz, R. M. Bandyopadhyay, W. B. Focke, B. Giebels, G. Godfrey, Paul S. Ray, Kent S. Wood, and D. J. Yentis, K. T. Reilly, Paul Hertz, Michael P. Kowalski, andJeffrey D. Scargle, Elliott D. Bloom, P. M. Saz Parkinson, Michael T. Wolff, M. N. Lovellette, and G. Shabad

Publikováno v: The Astrophysical Journal. 561:L183-L186

We report on timing and spectral observations of the 2000 outburst of XTE J1550-564 made by the Unconventional Stellar Aspect (USA) experiment on board the Advanced Research and Global Observation Satellite (ARGOS). We observe a low-frequency quasi-p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::574297c677f51f1226ae982119a69748
https://doi.org/10.1086/324756

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USA Experiment and [ITAL]RXTE[/ITAL] Observations of a Variable Low-Frequency Quasi-periodic Oscillation in XTE J1118+480

Autor: G. Shabad, Kent S. Wood, Paul S. Ray, K. T. Reilly, Jeffrey D. Scargle, Gilbert G. Fritz, Daryl J. Yentis, P. M. Saz Parkinson, Michael P. Kowalski, Michael T. Wolff, G. Godfrey, R. M. Bandyopadhyay, Paul Hertz, B. Giebels, M. N. Lovellette, Elliott D. Bloom

Publikováno v: The Astrophysical Journal. 544:L45-L48

Using the USA Experiment on the Advanced Research and Global Observation Satellite and the Rossi X-Ray Timing Explorer, we have extensively observed the X-ray transient XTE J1118+480 during its recent outburst in 2000 April-June. We present detailed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d75379cecf960eabcb3b74821f3e2a27
https://doi.org/10.1086/317287

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Shot noise in USA lightcurves of XTE J1118+480 and cygnus X-1

Autor: G. Shabad, M. T. Wolff, Elliott D. Bloom, Paul S. Ray, W. B. Focke, P. Hertz, G.L. Godfrey, B. Giebels, M. P. Kowalski, Gilbert G. Fritz, P. M. Saz Parkinson, Reba M. Bandyopadhyay, Jeffrey D. Scargle, K. S. Wood, M. N. Lovellette, K. T. Reilly, Daryl J. Yentis

Publikováno v: AIP Conference Proceedings.

We investigate the behavior of the new transient black hole candidate XTE J1118+480 using shot noise models in the time domain. Using light curves from the Unconventional Stellar Aspect experiment (USA), we model a portion of the emission as a superp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7736548d1b1a82d4a2634a192f91a348
https://doi.org/10.1063/1.1419638

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X-ray observations of Mkn 421 with USA

Autor: M. N. Lovellette, Jeffrey D. Scargle, M. T. Wolff, Gilbert G. Fritz, K. S. Wood, G. Shabad, Elliott D. Bloom, Reba M. Bandyopadhyay, K. T. Reilly, Paul S. Ray, W. B. Focke, Daryl J. Yentis, B. Giebels, M. P. Kowalski, G.L. Godfrey, P. M. Saz Parkinson, P. Hertz

Publikováno v: AIP Conference Proceedings.

This paper presents the first AGN detections with the USA X-ray detector on board of ARGOS. We started observing the BL Lac object Mkn421 at the end of January 2000, when it was also observed by the CAT Cerenkov telescope (see Pierre Espigat, these p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b802299514a545681948b77a2e4e044b
https://doi.org/10.1063/1.1370848

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A Search for Aperiodic Millisecond Variability in Cygnus X-1

Autor: H. Wen, G. Shabad, E. D. Bloom, C. Chaput, Paul Hertz, L. R. Cominsky, Jeffrey D. Scargle, G. Godfrey, Daryl J. Yentis, Kent S. Wood

We have conducted a search for aperiodic millisecond variability in the integrated 1 to 25 keV X-ray region of Cyg X-1. We have examined HEAO A-1 archival data and Rossi X-ray Timing Explorer (RXTE) guest observer data for evidence of excess power ab

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f6c8d38665d23325f582d05649f4c00

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The USA X-ray Timing Experiment

The USA Experiment is a new X-ray timing experiment with large collecting area and microsecond time resolution capable of conducting a broad program of studies of galactic X-ray binaries. USA is one of nine experiments aboard the Advanced Research an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e999f2a1badf0d1fe8f759020aaa44ce

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