Zobrazeno 1 - 10
of 405
pro vyhledávání: '"Jörn Wilms"'
Autor:
Kristin K. Madsen, Javier A. García, Daniel Stern, Rashied Amini, Stefano Basso, Diogo Coutinho, Brian W. Grefenstette, Steven Kenyon, Alberto Moretti, Patrick Morrissey, Kirpal Nandra, Giovanni Pareschi, Peter Predehl, Arne Rau, Daniele Spiga, Jörn Wilms, William W. Zhang
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
The High Energy X-ray Probe (HEX-P) is a proposed NASA probe-class mission that combines the power of high angular resolution with a broad X-ray bandpass to provide the necessary leap in capabilities to address the important astrophysical questions o
Externí odkaz:
https://doaj.org/article/4823677c94104d9da3f2666c32970325
Autor:
Riley M. T. Connors, John A. Tomsick, Paul Draghis, Benjamin Coughenour, Aarran W. Shaw, Javier A. García, Dominic Walton, Kristin Madsen, Daniel Stern, Nicole Cavero Rodriguez, Thomas Dauser, Melania Del Santo, Jiachen Jiang, Henric Krawczynski, Honghui Liu, Joseph Neilsen, Michael Nowak, Sean Pike, Andrea Santangelo, Navin Sridhar, Andrew West, Jörn Wilms
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2024)
Accretion is a universal astrophysical process that plays a key role in cosmic history, from the epoch of reionization to galaxy and stellar formation and evolution. Accreting stellar-mass black holes in X-ray binaries are one of the best laboratorie
Externí odkaz:
https://doaj.org/article/d68d39a27fbe4592a7398eb41af13ecf
Autor:
Erin Barillier, Victoria Grinberg, David Horn, Michael A. Nowak, Ronald A. Remillard, James F. Steiner, Dominic J. Walton, Jörn Wilms
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 2, p 165 (2023)
4U 1957+11 is a black hole candidate system that has been in a soft X-ray spectral state since its discovery. We present analyses of recent joint NICER and NuSTAR spectra, which are extremely well described by a highly inclined disk accreting into a
Externí odkaz:
https://doaj.org/article/95833e0cb8b54d679b05823a562d4917
Autor:
Matthias Kühnel, Sebastian Falkner, Christoph Grossberger, Ralf Ballhausen, Thomas Dauser, Fritz-Walter Schwarm, Ingo Kreykenbohm, Michael A. Nowak, Katja Pottschmidt, Carlo Ferrigno, Richard E. Rothschild, Silvia Martínez-Núñez, José Miguel Torrejón, Felix Fürst, Dmitry Klochkov, Rüdiger Staubert, Peter Kretschmar, Jörn Wilms
Publikováno v:
Acta Polytechnica, Vol 56, Iss 1, Pp 41-46 (2016)
In a previous work, we introduced a tool for analyzing multiple datasets simultaneously, which has been implemented into ISIS. This tool was used to fit many spectra of X-ray binaries. However, the large number of degrees of freedom and individual da
Externí odkaz:
https://doaj.org/article/b9277fa33330404698a12424de8c325d
Autor:
Tobias Beuchert, Jörn Wilms, Matthias Kadler, Anna Lia Longinotti, Matteo Guainazzi, Giovanni Miniutti, Ignacio de la Calle
Publikováno v:
Acta Polytechnica, Vol 54, Iss 4, Pp 266-270 (2014)
We study 12 Seyfert 1 galaxies with a high level of optical polarization. Optical light emerging from the innermost regions is predominantly scattered in a polar region above the central engine directly in our line of sight. These sources show charac
Externí odkaz:
https://doaj.org/article/6da6722868db4eaaa6b4edcb7708a147
Publikováno v:
Acta Polytechnica, Vol 54, Iss 3, Pp 177-182 (2014)
The spectral shape of an X-ray source strongly depends on the amount and distribution of the surrounding material. The spectrum of a primary source which is located in an optically thin medium with respect to Compton scattering is mainly modified by
Externí odkaz:
https://doaj.org/article/afb78da40de74c7cac984c141bb0eae1
Publikováno v:
Galaxies, Vol 4, Iss 4, p 48 (2016)
The LINER galaxy NGC 1052 is an ideal target to study the innermost regions of active galactic nuclei (AGN), given its close distance of about 20 Mpc. The source was observed at 29 epochs from 2005 to 2009 with the Very Long Baseline Array (VLBA) at
Externí odkaz:
https://doaj.org/article/a544c67b7db84b3cabf4b1674a916e8c
Autor:
Matteo Bachetti, Marianne Heida, Thomas Maccarone, Daniela Huppenkothen, Gian Luca Israel, Didier Barret, Murray Brightman, McKinley Brumback, Hannah P. Earnshaw, Karl Forster, Felix Fürst, Brian W. Grefenstette, Fiona A. Harrison, Amruta D. Jaodand, Kristin K. Madsen, Matthew Middleton, Sean N. Pike, Maura Pilia, Juri Poutanen, Daniel Stern, John A. Tomsick, Dominic J. Walton, Natalie Webb, Jörn Wilms
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, 2022, 937, ⟨10.3847/1538-4357/ac8d67⟩
The Astrophysical Journal, 2022, 937, ⟨10.3847/1538-4357/ac8d67⟩
M82 X-2 is the first pulsating ultraluminous X-ray source (PULX) discovered. The luminosity of these extreme pulsars, if isotropic, implies an extreme mass transfer rate. An alternative is to assume a much lower mass transfer rate, but with an appare
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93647e319255c44286749a620b688aba
https://eprints.soton.ac.uk/472491/
https://eprints.soton.ac.uk/472491/
Autor:
Ole König, Jörn Wilms, Riccardo Arcodia, Thomas Dauser, Konrad Dennerl, Victor Doroshenko, Frank Haberl, Steven Hämmerich, Christian Kirsch, Ingo Kreykenbohm, Maximilian Lorenz, Adam Malyali, Andrea Merloni, Arne Rau, Thomas Rauch, Gloria Sala, Axel Schwope, Valery Suleimanov, Philipp Weber, Klaus Werner
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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Novae are caused by runaway thermonuclear burning in the hydrogen-rich envelopes of accreting white dwarfs, which results in the envelope to expand rapidly and to eject most of its mass. For more than 30 years, nova theory has predicted the existence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97dee881163b51ace8114126f875f8be
https://hdl.handle.net/2117/383537
https://hdl.handle.net/2117/383537
Autor:
Javier A. García, Thomas Dauser, Renee Ludlam, Michael Parker, Andrew Fabian, Fiona A. Harrison, Jörn Wilms
We present new reflection models specifically tailored to model the X-ray radiation reprocessed in accretion disks around neutron stars, in which the primary continuum is characterized by a single temperature blackbody spectrum, emitted either at the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ab787a85c648c98d640be36130c4e06
https://resolver.caltech.edu/CaltechAUTHORS:20220113-182247899
https://resolver.caltech.edu/CaltechAUTHORS:20220113-182247899