Search Results - "Wilms, Jorn"

The Effects of High Density on the X-ray Spectrum Reflected from Accretion Discs Around Black Holes by Garcia, Javier A., Fabian, Andrew C., Kallman, Timothy R., Dauser, Thomas, Parker, Micahel L., McClintock, Jeffrey E., Steiner, James F., Wilms, Jorn

“…Current models of the spectrum of X-rays reflected from accretion discs around black holes and other compact objects are commonly calculated assuming that the…”
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Reflection Spectroscopy of the Black Hole Binary XTE J1752−223 in Its Long-stable Hard State by García, Javier A., Steiner, James F., Grinberg, Victoria, Dauser, Thomas, Connors, Riley M. T., McClintock, Jeffrey E., Remillard, Ronald A., Wilms, Jörn, Harrison, Fiona A., Tomsick, John A.

“…We present a detailed spectral analysis of the black hole binary XTE J1752−223 in the hard state of its 2009 outburst. Regular monitoring of this source by the…”
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SPECTRAL STATE DEPENDENCE OF THE 0.4-2 MEV POLARIZED EMISSION IN CYGNUS X-1 SEEN WITH INTEGRAL/IBIS, AND LINKS WITH THE AMI RADIO DATA by Rodriguez, Jérôme, Grinberg, Victoria, Laurent, Philippe, Bel, Marion Cadolle, Pottschmidt, Katja, Pooley, Guy, Bodaghee, Arash, Wilms, Jörn, Gouiffès, Christian

“…ABSTRACT Polarization of the keV hard tail of the microquasar Cygnus X-1 has been independently reported by INTEGRAL/Imager on Board the INTEGRAL Satellite…”
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Modeling the Precession of the Warped Inner Accretion Disk in the Pulsars LMC X-4 and SMC X-1 with NuSTAR and XMM-Newton by Brumback, McKinley C., Hickox, Ryan C., Fürst, Felix S., Pottschmidt, Katja, Tomsick, John A., Wilms, Jörn

“…We present a broadband X-ray study of the effect of superorbital periods on X-ray spectra and pulse profiles in the neutron star X-ray binaries LMC X-4 and SMC…”
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Going with the Flow: Can the Base of Jets Subsume the Role of Compact Accretion Disk Coronae? by Markoff, Sera, Nowak, Michael A, Wilms, Jörn

“…The hard state of X-ray binaries (XRBs) is characterized by a power-law spectrum in the X-ray band and a flat/inverted radio/IR spectrum associated with…”
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Discovery and modelling of a flattening of the positive cyclotron line/luminosity relation in GX 304−1 with RXTE by Rothschild, Richard E., Kühnel, Matthias, Pottschmidt, Katja, Hemphill, Paul, Postnov, Konstantin, Gornostaev, Mikhail, Shakura, Nikolai, Fürst, Felix, Wilms, Jörn, Staubert, Rüdiger, Klochkov, Dmitry

“…Abstract The Rossi X-ray Timing Explorer (RXTE) observed four outbursts of the accreting X-ray binary transient source, GX 304−1 in 2010 and 2011. We present…”
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GAMMA-RAY OBSERVATIONS OF THE MICROQUASARS CYGNUS X-1, CYGNUS X-3, GRS 1915+105, AND GX 339–4 WITH THE FERMI LARGE AREA TELESCOPE by BODAGHEE, ARASH, Tomsick, John A, POTTSCHMIDT, KATJA, Rodriguez, Jerome, Wilms, Jorn, Pooley, Guy G

“…Detecting gamma-rays from microquasars is a challenging but worthwhile endeavor for understanding particle acceleration and the jet mechanism and for…”
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NuSTAR DISCOVERY OF A LUMINOSITY DEPENDENT CYCLOTRON LINE ENERGY IN VELA X-1 by Furst, Felix, POTTSCHMIDT, KATJA, Wilms, Jorn, Tomsick, John A, BACHETTI, MATTED, Boggs, Steven E, Christensen, Finn E, CRAIG, William W, Grefenstette, Brian W, Hailey, Charles J

“…We present NuSTAR observations of Vela X-l, a persistent, yet highly variable, neutron star high-mass X-ray binary (HMXB). Two observations were taken at…”
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SPECTRAL AND TIMING NATURE OF THE SYMBIOTIC X-RAY BINARY 4U 1954+319: THE SLOWEST ROTATING NEUTRON STAR IN AN X-RAY BINARY SYSTEM by ENOTO, TERUAKI, Sasano, Makoto, Yamada, Shin'ya, Tamagawa, Toru, Makishima, Kazuo, POTTSCHMIDT, KATJA, Marcu, Diana, Corbet, Robin H D, Fuerst, Felix, Wilms, Jorn

“…The symbiotic X-ray binary (SyXB) 4U 1954+319 is a rare system hosting a peculiar neutron star (NS) and an M-type optical companion. Its ~5.4 hr NS spin period…”
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A Broadband X-Ray View of the Precessing Accretion Disk and Pre-eclipse Dip in the Pulsar Her X-1 with NuSTAR and XMM-Newton by Brumback, McKinley C., Hickox, Ryan C., Fürst, Felix S., Pottschmidt, Katja, Tomsick, John A., Wilms, Jörn, Staubert, Rüdiger, Vrtilek, Saeqa

“…We present a broad-band X-ray study of the variation with the super orbital cycle of the pulse profiles and spectral shape in the low-mass X-ray binary Her…”
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Accurate Treatment of Comptonization in X-Ray Illuminated Accretion Disks by García, Javier A., Sokolova-Lapa, Ekaterina, Dauser, Thomas, Madej, Jerzy, Ró a ska, Agata, Majczyna, Agnieszka, Harrison, Fiona A., Wilms, Jörn

“…A large fraction of accreting black hole and neutron star systems present clear evidence of the reprocessing of X-rays in the atmosphere of an optically thick…”
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A CLUMPY STELLAR WIND AND LUMINOSITY-DEPENDENT CYCLOTRON LINE REVEALED BY THE FIRST SUZAKU OBSERVATION OF THE HIGH-MASS X-RAY BINARY 4U 1538-522 by Hemphill, Paul B, Rothschild, Richard E, Markowitz, Alex, Furst, Felix, POTTSCHMIDT, KATJA, Wilms, Jorn

“…We present results from the first Suzaku observation of the high-mass X-ray binary 4U 1538-522. The broadband spectral coverage of Suzaku allows for a detailed…”
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INTEGRAL: Science Highlights and Future Prospects by Winkler, Christoph, Diehl, Roland, Ubertini, Pietro, Wilms, Jörn

“…ESA’s hard X-ray and soft gamma-ray observatory INTEGRAL is covering the 3 keV to 10 MeV energy band, with excellent sensitivity during long and uninterrupted…”
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Evidence for an evolving cyclotron line energy in 4U 1538−522 by Hemphill, Paul B., Rothschild, Richard E., Fürst, Felix, Grinberg, Victoria, Klochkov, Dmitry, Kretschmar, Peter, Pottschmidt, Katja, Staubert, Rüdiger, Wilms, Jörn

“…We have performed a full time and luminosity-resolved spectral analysis of the high-mass X-ray binary 4U 1538−522 using the available RXTE, INTEGRAL, and…”
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Suzaku Observations of 4U 1957+11: Potentially the Most Rapidly Spinning Black Hole in (the Halo of) the Galaxy by Nowak, Michael A, Wilms, Jörn, Pottschmidt, Katja, Schulz, Norbert, Maitra, Dipankar, Miller, Jon

“…We present three Suzaku observations of the black hole candidate 4U 1957+11 (V1408 Aql)-a source that exhibits some of the simplest and cleanest examples of…”
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THE Be/X-RAY BINARY SWIFT J1626.6–5156 AS A VARIABLE CYCLOTRON LINE SOURCE by DECESAR, MEGAN E, Boyd, Patricia T, POTTSCHMIDT, KATJA, Wilms, Jorn, Suchy, Slawomir, Miller, M Coleman

“…Swift J1626.6-5156 is a Be/X-ray binary that was in outburst from 2005 December until 2008 November. We have examined Rossi X-ray Timing Explorer/Proportional…”
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Chandra X-Ray Spectroscopy of the Focused Wind in the Cygnus X-1 System. I. The Nondip Spectrum in the Low/Hard State by Hanke, Manfred, Wilms, Jörn, Nowak, Michael A, Pottschmidt, Katja, Schulz, Norbert S, Lee, Julia C

“…We present analyses of a 50 ks observation of the supergiant X-ray binary system Cygnus X-1 (Cyg X-1)/HDE226868 taken with the Chandra High Energy Transmission…”
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CONFIRMATION OF A HIGH MAGNETIC FIELD IN GRO J1008–57 by BELLM, ERIC C, Furst, Felix, POTTSCHMIDT, KATJA, Tomsick, John A, Boggs, Steven E, Chakrabarty, Deepto, Christensen, Finn E, Craig, William W, Hailey, Charles J, Harrison, Fiona A, Stern, Daniel, Walton, Dominic J, Wilms, Jorn, Zhang, William W

“…GRO J1008-57 is a high-mass X-ray binary for which several claims of a cyclotron resonance scattering feature near 80 keV have been reported. We use NuSTAR,…”
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MEASUREMENTS OF CYCLOTRON FEATURES AND PULSE PERIODS IN THE HIGH-MASS X-RAY BINARIES 4U 1538–522 AND 4U 1907+09 WITH THE INTERNATIONAL GAMMA-RAY ASTROPHYSICS LABORATORY by Hemphill, Paul B., Rothschild, Richard E., Caballero, Isabel, Pottschmidt, Katja, Kühnel, Matthias, Fürst, Felix, Wilms, Jörn

“…We present a spectral and timing analysis of International Gamma-Ray Astrophysics Laboratory (INTEGRAL) observations of two high-mass X-ray binaries, 4U…”
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OBSERVATIONS OF THE HIGH-MASS X-RAY BINARY A 0535+26 IN QUIESCENCE by Rothschild, Richard, Markowitz, Alex, Hemphill, Paul, Caballero, Isabel, POTTSCHMIDT, KATJA, Kuhnel, Matthias, Wilms, Jorn, Furst, Felix, Doroshenko, Victor, Camero-Arranz, Ascension

“…We have analyzed three observations of the high-mass X-ray binary A 0535+26 performed by the Rossi X-Ray Timing Explorer (RXTE) three, five, and six months…”
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