Search Results - "Dauser, T"

IMPROVED REFLECTION MODELS OF BLACK HOLE ACCRETION DISKS: TREATING THE ANGULAR DISTRIBUTION OF X-RAYS by Garcia, J, Dauser, T, Lohfink, A, Kallman, T R, Steiner, J F, McClintock, J E, Brenneman, L, Wilms, J, Eikmann, W, Reynolds, C S, Tombesi, F

“…X-ray reflection models are used to constrain the properties of the accretion disk, such as the degree of ionization of the gas and the elemental abundances…”
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The role of the reflection fraction in constraining black hole spin by Dauser, T., García, J., Parker, M. L., Fabian, A. C., Wilms, J.

“…In many active galaxies, the X-ray reflection features from the innermost regions of the accretion disc are relativistically distorted. This distortion allows…”
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Broad emission lines for a negatively spinning black hole by Dauser, T., Wilms, J., Reynolds, C. S., Brenneman, L. W.

“…We present an extended scheme for the calculation of the profiles of emission lines from accretion discs around rotating black holes. The scheme includes discs…”
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X-RAY REFLECTED SPECTRA FROM ACCRETION DISK MODELS. III. A COMPLETE GRID OF IONIZED REFLECTION CALCULATIONS by Garcia, J, Dauser, T, Reynolds, C S, Kallman, T R, McClintock, J E, Wilms, J, Eikmann, W

“…We present a new and complete library of synthetic spectra for modeling the component of emission that is reflected from an illuminated accretion disk. The…”
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Modelling the light curves of ultraluminous X-ray sources as precession by Dauser, T, Middleton, M, Wilms, J

“…We present a freely available xspec model for the modulations seen in the long-term light curves of multiple ultraluminous X-ray sources (ULXs). By…”
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The effect of returning radiation on relativistic reflection by Dauser, T, García, J A, Joyce, A, Licklederer, S, Connors, R M T, Ingram, A, Reynolds, C S, Wilms, J

“…ABSTRACT We study the effect of returning radiation on the shape of the X-ray reflection spectrum in the case of thin accretion discs. We show that the…”
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Irradiation of an accretion disc by a jet: general properties and implications for spin measurements of black holes by Dauser, T., Garcia, J., Wilms, J., Böck, M., Brenneman, L. W., Falanga, M., Fukumura, K., Reynolds, C. S.

“…X-ray irradiation of the accretion disc leads to strong reflection features, which are then broadened and distorted by relativistic effects. We present a…”
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A selection effect boosting the contribution from rapidly spinning black holes to the cosmic X-ray background by Vasudevan, R. V., Fabian, A. C., Reynolds, C. S., Aird, J., Dauser, T., Gallo, L. C.

“…The cosmic X-ray background (CXB) is the total emission from past accretion activity on to supermassive black holes in active galactic nuclei (AGN) and peaks…”
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Returning radiation in strong gravity around black holes: reverberation from the accretion disc by Wilkins, D R, García, J A, Dauser, T, Fabian, A C

“…ABSTRACT We study reflected X-ray emission that returns to the accretion disc in the strong gravitational fields around black holes using General Relativistic…”
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Living on a Flare: Relativistic Reflection in V404 Cyg Observed by NuSTAR during Its Summer 2015 Outburst by Walton, D. J., Mooley, K., King, A. L., Tomsick, J. A., Miller, J. M., Dauser, T., García, J. A., Bachetti, M., Brightman, M., Fabian, A. C., Forster, K., Fürst, F., Gandhi, P., Grefenstette, B. W., Harrison, F. A., Madsen, K. K., Meier, D. L., Middleton, M. J., Natalucci, L., Rahoui, F., Rana, V., Stern, D.

“…We present first results from a series of NuSTAR observations of the black hole X-ray binary V404 Cyg obtained during its summer 2015 outburst, primarily…”
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The NuSTAR spectrum of Mrk 335: extreme relativistic effects within two gravitational radii of the event horizon? by Parker, M. L., Wilkins, D. R., Fabian, A. C., Grupe, D., Dauser, T., Matt, G., Harrison, F. A., Brenneman, L., Boggs, S. E., Christensen, F. E., Craig, W. W., Gallo, L. C., Hailey, C. J., Kara, E., Komossa, S., Marinucci, A., Miller, J. M., Risaliti, G., Stern, D., Walton, D. J., Zhang, W. W.

“…We present 3–50 keV NuSTAR observations of the active galactic nuclei Mrk 335 in a very low flux state. The spectrum is dominated by very strong features at…”
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NuSTAR Observations of the Accreting Atolls GX 3+1, 4U 1702-429, 4U 0614+091, and 4U 1746-371 by Ludlam, R. M., Miller, J. M., Barret, D., Cackett, E. M., Coughenour, B. M., Dauser, T., Degenaar, N., García, J. A., Harrison, F. A., Paerels, F.

“…Atoll sources are accreting neutron star (NS) low-mass X-ray binaries. We present a spectral analysis of four persistent atoll sources (GX 3+1, 4U 1702−429, 4U…”
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On the determination of the spin and disc truncation of accreting black holes using X-ray reflection by Fabian, A. C., Parker, M. L., Wilkins, D. R., Miller, J. M., Kara, E., Reynolds, C. S., Dauser, T.

“…We discuss the application of simple relativistically blurred X-ray reflection models to the determination of the spin and the inner radius of the disc in…”
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The X-ray disc/wind degeneracy in AGN by Parker, M L, Matzeu, G A, Matthews, J H, Middleton, M J, Dauser, T, Jiang, J, Joyce, A M

“…ABSTRACT Relativistic Fe K emission lines from accretion discs and from disc winds encode key information about black holes, and their accretion and feedback…”
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Lense-Thirring precession in ULXs as a possible means to constrain the neutron star equation of state by Middleton, M J, Fragile, P C, Bachetti, M, Brightman, M, Jiang, Y-F, Ho, W C G, Roberts, T P, Ingram, A R, Dauser, T, Pinto, C, Walton, D J, Fuerst, F, Fabian, A C, Gehrels, N

“…Abstract The presence of neutron stars in at least three ultraluminous X-ray sources is now firmly established and offers an unambiguous view of super-critical…”
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A low-flux state in IRAS 00521−7054 seen with NuSTAR and XMM–Newton : relativistic reflection and an ultrafast outflow by Walton, D J, Nardini, E, Gallo, L C, Reynolds, M T, Ricci, C, Dauser, T, Fabian, A C, García, J A, Harrison, F A, Risaliti, G, Stern, D

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Spectral analysis of 1H0707-495 with XMM-Newton by Dauser, T, Svoboda, J, Schartel, N, Wilms, J, Dovciak, M, Ehle, M, Karas, V, Santos-Lleó, M, Marshall, H. L

“…We present the results of a 500ks long XMM-Newton observation and a 120ks long quasi-simultaneous Chandra observation of the Narrow-Line Seyfert 1 galaxy…”
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NuSTAR reveals the hidden nature of SS433 by Middleton, M J, Walton, D J, Alston, W, Dauser, T, Eikenberry, S, Jiang, Y-F, Fabian, A C, Fuerst, F, Brightman, M, Marshall, H, Parker, M, Pinto, C, Harrison, F A, Bachetti, M, Altamirano, D, Bird, A J, Perez, G, Miller-Jones, J, Charles, P, Boggs, S, Christensen, F, Craig, W, Forster, K, Grefenstette, B, Hailey, C, Madsen, K, Stern, D, Zhang, W

“…SS433 is the only Galactic binary system known to persistently accrete at highly super-critical (or hyper-critical) rates, similar to those in tidal disruption…”
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Exploring the high-density reflection model for the soft excess in RBS 1124 by Madathil-Pottayil, A, Walton, D J, García, Javier, Miller, Jon, Gallo, Luigi C, Ricci, C, Reynolds, Mark T, Stern, D, Dauser, T, Jiang, Jiachen, Alston, William, Fabian, A C, Hardcastle, M J, Kosec, Peter, Nardini, Emanuele, Reynolds, Christopher S

“…ABSTRACT ‘Bare’ active galactic nuclei (AGN) are a subclass of Type 1 AGN that show little or no intrinsic absorption. They offer an unobscured view of the…”
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Relativistic reflection: Review and recent developments in modeling by Dauser, T., García, J., Wilms, J.

“…Measuring relativistic reflection is an important tool to study the innermost regions of the an accreting black hole system. In the following we present a…”
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