Zobrazeno 1 - 10
of 10
pro vyhledávání: '"David Bogensberger"'
Autor:
David Bogensberger, Jon M Miller, Richard Mushotzky, W. N. Brandt, Elias Kammoun, Abderahmen Zoghbi, Ehud Behar
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 307 (2024)
The structure of the jet in Cen A is likely better revealed in X-rays than in the radio band, which is usually used to investigate jet proper motions. In this paper, we analyze Chandra Advanced CCD Imaging Spectrometer observations of Cen A from 2000
Externí odkaz:
https://doaj.org/article/d57b123845954029af981c81e6801c04
Autor:
Xin Xiang, Jon M. Miller, Abderahmen Zoghbi, Mark T. Reynolds, David Bogensberger, Lixin Dai, Paul A. Draghis, Jeremy J. Drake, Olivier Godet, Jimmy Irwin, M. Coleman Miller, Brenna Mockler, Richard Saxton, Natalie Webb
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 106 (2024)
Tidal disruption events (TDEs) can potentially probe low-mass black holes (BHs) in host galaxies that might not adhere to bulge or stellar-dispersion relationships. At least initially, TDEs can also reveal super-Eddington accretion. X-ray spectroscop
Externí odkaz:
https://doaj.org/article/fcc8140b8d234f48b28912659d43b092
Autor:
David Bogensberger, Jon Miller, Elias Kammoun, Richard Mushotzky, Laura Brenneman, W. N. Brandt, Edward M. Cackett, Andrew Fabian, Jelle Kaastra, Shashank Dattathri, Ehud Behar, Abderahmen Zoghbi
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 150 (2024)
Cen A hosts the closest active galactic nucleus to the Milky Way, which makes it an ideal target for investigating the dynamical processes in the vicinity of accreting supermassive black holes. In this paper, we present 14 Chandra HETGS spectra of th
Externí odkaz:
https://doaj.org/article/63ffca335687435e89b0b857b80b6de7
Autor:
Axel Schwope, Johan Comparat, Zaven Arzoumanian, David A. H. Buckley, Mara Salvato, Mirko Krumpe, Georg Lamer, Mariusz Gromadzki, Gabriele Ponti, Ron Remillard, C. B. Markwardt, J. Wolf, Erin Kara, Keith C. Gendreau, Dheeraj R. Pasham, R. Arcodia, Miriam E. Ramos-Ceja, Andrea Merloni, A. Malyali, Kirpal Nandra, Arne Rau, Johannes Buchner, M. Schramm, David Bogensberger
Publikováno v:
Nature
Quasi-periodic eruptions (QPEs) are very-high-amplitude bursts of X-ray radiation recurring every few hours and originating near the central supermassive black holes of galactic nuclei1,2. It is currently unknown what triggers these events, how long
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e9eedd7716cbc8a115fbe30ca3d7872
http://europepmc.org/articles/PMC8081662
http://europepmc.org/articles/PMC8081662
Autor:
Johannes Buchner, Thomas Boller, David Bogensberger, Adam Malyali, Kirpal Nandra, Joern Wilms, Tom Dwelly, Teng Liu
The reliability of detecting source variability in sparsely and irregularly sampled X-ray light curves is investigated. This is motivated by the unprecedented survey capabilities of eROSITA onboard SRG, providing light curves for many thousand source
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c4170d197694b9daeabbe91e144313c
http://arxiv.org/abs/2106.14529
http://arxiv.org/abs/2106.14529
Autor:
Gabriele Ponti, Tomaso Belloni, Kirpal Nandra, Teo Muñoz-Darias, James Miller-Jones, Haiwu Pan, Thomas D. Russell, F. M. Vincentelli, Chichuan Jin, Pavan Vynatheya, David Bogensberger
Publikováno v:
Astronomy & Astrophysics
Astronomy & Astrophysics, 641:A101. EDP Sciences
Astronomy & Astrophysics, 641:A101. EDP Sciences
Aims: Flip-flops are top-hat-like X-ray flux variations which occur in some transient accreting black hole binary systems and feature simultaneous changes in the spectral hardness and the Power Density Spectrum (PDS). They occur at a crucial time in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e95b9af794d7b8b56ca936df821204c
SWIFT J1658.2-4242 is an X-ray transient discovered recently in the Galactic plane, with severe X-ray absorption corresponding to an equivalent hydrogen column density of $N_{\rm H,abs}\sim2\times10^{23}$ cm$^{-2}$. Using new Chandra and XMM-Newton d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4f2db2ef254cfc73530c4635d576ec5
http://arxiv.org/abs/1903.08099
http://arxiv.org/abs/1903.08099
Publikováno v:
Open Astronomy, Vol 26, Iss 1, Pp 134-138 (2017)
Several post-common envelope binaries have slightly increasing, decreasing or oscillating orbital periods. One of several possible explanations is light travel-time changes, caused by the binary centre-of-mass being perturbed by the gravitational pul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55a844698d8ea9d42bef7c4fc43d5587
http://ora.ox.ac.uk/objects/uuid:
http://ora.ox.ac.uk/objects/uuid:
Publikováno v:
Open Astronomy, Vol 27, Iss 1, Pp 75-75 (2018)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4077537fed0d6ec26447da5ae2fac5c4
https://doi.org/10.1515/astro-2018-0019
https://doi.org/10.1515/astro-2018-0019
Publikováno v:
Astrophysical Journal; 4/20/2019, Vol. 875 Issue 2, p1-1, 1p