Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Hauke Worpel"'
We report on XMM-Newton and NuSTAR X-ray observations of the prototypical polar, AM Herculis, supported by ground-based photometry and spectroscopy, all obtained in high accretion states. In 2005, AM Herculis was in its regular mode of accretion, sho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::926c27a91cffb9b43ad5b76958124123
http://arxiv.org/abs/2008.08402
http://arxiv.org/abs/2008.08402
Aims. We aim to identify new intermediate polars (IPs) in XMM-Newton observations from a list of promising candidates. By selecting targets not previously known to be X-ray bright, we aim to uncover evidence for an X-ray underluminous IP subpopulatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd78f4616ad60dcf37af33efb39ccc33
Publikováno v:
Astronomy & Astrophysics. 646:A181
The majority of cataclysmic variables are predicted to be post-period minimum systems with degenerate donor stars, the period bouncers. Owing to their intrinsic faintness, however, only a handful of these systems have so far been securely identified.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7531f21d5eb629c6ec3b8ae638f86246
https://doi.org/10.1051/0004-6361/202039561
https://doi.org/10.1051/0004-6361/202039561
Autor:
Axel Schwope, Hauke Worpel
Publikováno v:
Proceedings of The Golden Age of Cataclysmic Variables and Related Objects IV — PoS(GOLDEN 2017).
The soft excess is a spectral feature shown by many polar cataclysmic variables, resembling a very luminous blackbody in soft X-rays. It is thought to arise from the accretion of discrete blobs of gas onto the WD, and was found in all polars discover
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c55911f2bb8e122ae454c51b4191360a
https://doi.org/10.22323/1.315.0019
https://doi.org/10.22323/1.315.0019
Autor:
Ben A. Ayliffe, Christoph Federrath, Mark Hutchison, Roberto Iaconi, Enrico Ragusa, Chris Nixon, Rebecca Nealon, Alex R. Pettitt, Daniel Mentiplay, Duncan Forgan, Thomas Reichardt, David Liptai, Terrence S. Tricco, Giovanni Dipierro, Simon C. O. Glover, Giuseppe Lodato, T. Constantino, Hauke Worpel, Clément Bonnerot, James Wurster, Guillaume Laibe, Giulia Ballabio, Daniel J. Price, Stéven Toupin, Kieran Hirsh, Conrad Chan, Clare Dobbs
Publikováno v:
Publ.Astron.Soc.Austral.
Publ.Astron.Soc.Austral., 2018, 35, pp.31. ⟨10.1017/pasa.2018.25⟩
Publications of the Astronomical Society of Australia
Publications of the Astronomical Society of Australia, 35, e031
Publ.Astron.Soc.Austral., 2018, 35, pp.31. ⟨10.1017/pasa.2018.25⟩
Publications of the Astronomical Society of Australia
Publications of the Astronomical Society of Australia, 35, e031
We present Phantom, a fast, parallel, modular and low-memory smoothed particle hydrodynamics and magnetohydrodynamics code developed over the last decade for astrophysical applications in three dimensions. The code has been developed with a focus on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68761a1d0871639ceffb191dbc2505a8
https://hal.archives-ouvertes.fr/hal-01983030
https://hal.archives-ouvertes.fr/hal-01983030
Autor:
Erik Kuulkers, Jérôme Chenevez, J. J. M. in 't Zand, M. E. B. Visser, Duncan K. Galloway, Hauke Worpel, C. Sanchez-Fernandez, Laurens Keek
Publikováno v:
Zand, J J M I, Visser, M E B, Galloway, D K, Chenevez, J, Keek, L, Kuulkers, E, Sanchez-Fernandez, C & Wörpel, H 2017, ' Neutron star cooling and the rp process in thermonuclear X-ray bursts ', Astronomy and Astrophysics, vol. 606, A130 . https://doi.org/10.1051/0004-6361/201731281
Astronomy & Astrophysics
Astronomy & Astrophysics
When the upper layer of an accreting neutron star experiences a thermonuclear runaway of helium and hydrogen, it exhibits an X-ray burst of a few keV with a cool-down phase of typically 1~minute. When there is a surplus of hydrogen, hydrogen fusion i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f728979c4c038a4d8e074f942dac507
We aim to study the temporal and spectral behaviour of four polar CVs from the infrared to X-ray regimes, refine our knowledge of the physical parameters of these systems at different accretion rates, and to search for a possible excess of soft X-ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::223f43e71a2c970dbe9d6da1e3019d5d
Autor:
Axel Schwope, Hauke Worpel
Aims: To incorporate background subtraction into the Bayesian Blocks algorithm so that transient events can be timed accurately and precisely even in the presence of a substantial, rapidly variable, background. Methods: We developed several modificat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bd41222130aba9c4048cd848a00ad39
http://arxiv.org/abs/1503.04592
http://arxiv.org/abs/1503.04592
Publikováno v:
The Astrophysical Journal. 801:60
The standard approach for time-resolved X-ray spectral analysis of thermonuclear bursts involves subtraction of the pre-burst emission as background. This approach implicitly assumes that the persistent flux remains constant throughout the burst. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::928a56830816c26fe1589e5d687886ff
https://doi.org/10.1088/0004-637x/801/1/60
https://doi.org/10.1088/0004-637x/801/1/60
Publikováno v:
The Astrophysical Journal. 772:94
The standard approach for time-resolved X-ray spectral analysis of thermonuclear bursts involves subtraction of the pre-burst emission as background. This approach implicitly assumes that the persistent flux remains constant throughout the burst. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc685fe6de3adb2ace5b32801ae0316e
https://doi.org/10.1088/0004-637x/772/2/94
https://doi.org/10.1088/0004-637x/772/2/94