Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Voss, Rasmus"'
White dwarfs (WDs) can increase their mass by accretion from companion stars, provided the mass-accretion rate is high enough to avoid nova eruptions. The accretion regimes that allow growth of the WDs are usually calculated assuming constant mass-tr
Externí odkaz:
http://arxiv.org/abs/1403.4797
Context: The nature of the progenitors of type Ia supernova (SN) progenitors remains unclear. While it is usually agreed that single-degenerate progenitor systems would be luminous supersoft X-ray sources (SSSs), it was recently suggested that double
Externí odkaz:
http://arxiv.org/abs/1310.2170
Autor:
Burke, Mark J., Raychaudhury, Somak, Kraft, Ralph P., Maccarone, Thomas J., Brassington, Nicola J., Hardcastle, Martin J., Kainulainen, Jouni, Woodley, Kristin A., Goodger, Joanna L., Sivakoff, Gregory R., Forman, William R., Jones, Christine, Murray, Stephen S., Birkinshaw, Mark, Croston, Judith H., Evans, Daniel A., Gilfanov, Marat, Jordan, Andres, Sarazin, Craig L., Voss, Rasmus, Worrall, Diana M., Zhang, Zhongli
We present a spectral investigation of X-ray binaries in NGC 5128 (Cen A), using six 100 ks Chandra observations taken over two months in 2007. We divide our sample into thermally and non-thermally dominated states based on the behavior of the fitted
Externí odkaz:
http://arxiv.org/abs/1302.0851
Autor:
Krause, Martin, Fierlinger, Katharina, Diehl, Roland, Burkert, Andreas, Voss, Rasmus, Ziegler, Udo
We study the evolution of isolated and merging interstellar bubbles of three stars (25, 32 and 60 M\odot) in a homogeneous background medium with a density of 10 mp /ccm via 3D-hydrodynamic simulations with standard ISM thermodynamics (optically thin
Externí odkaz:
http://arxiv.org/abs/1207.7231
The progenitors of supernovae (SNe) type Ia are usually assumed to be either a single white dwarf (WD) accreting from a non-degenerate companion (the SD channel) or the result of two merging WDs (DD channel). However, no consensus currently exists as
Externí odkaz:
http://arxiv.org/abs/1207.6310
Autor:
Burke, Mark J., Raychaudhury, Somak, Kraft, Ralph P., Brassington, Nicola J., Hardcastle, Martin J., Goodger, Joanna L., Sivakoff, Gregory R., Forman, William R., Jones, Christine, Woodley, Kristin A., Murray, Stephen S., Kainulainen, Jouni, Birkinshaw, Mark, Croston, Judith H., Evans, Daniel A., Gilfanov, Marat, Jordan, Andres, Sarazin, Craig L., Voss, Rasmus, Worrall, Diana M., Zhang, Zhongli
Publikováno v:
ApJ, 749, 112, 2012
We report the discovery of a bright X-ray transient, CXOU J132527.6-430023, in the nearby early-type galaxy NGC 5128. The source was first detected over the course of five Chandra observations in 2007, reaching an unabsorbed outburst luminosity of 1-
Externí odkaz:
http://arxiv.org/abs/1202.3149
We present an analysis of Chandra observations of the position of ten nearby (< 25 Mpc) type Ia supernovae, taken before the explosions. No sources corresponding to progenitors were found in any of the observations. We calculated upper limits on the
Externí odkaz:
http://arxiv.org/abs/1109.6605