Zobrazeno 1 - 10
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pro vyhledávání: '"Hoffmann, A. I. D."'
(abridged) The first unidentified very high energy gamma ray source (TeV J2032+4130) in the Cygnus region has been the subject of intensive search for a counterpart source at other wavelengths. A deep ($\approx 50$ ksec) exposure of TeV J2032+4130 wi
Externí odkaz:
http://arxiv.org/abs/0705.0009
Publikováno v:
Astrophys.SpaceSci.309:215-219,2007
Amongst the sources seen in very high gamma-rays several are associated with Pulsar Wind Nebulae (``TeV plerions''). The study of hard X-ray/soft gamma-ray emission is providing an important insight into the energetic particle population present in t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609423
Publikováno v:
Astrophys.SpaceSci.309:189-195,2007
Observations of the inner radian of the Galactic disk at very high energy (VHE) gamma-rays have revealed at least 16 new sources. Besides shell type super-nova remnants, pulsar wind nebulae (PWN) appear to be a dominant source population in the catal
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609386
Autor:
Krumpe, Mirko, Coffey, Deirdre, Egger, Georg, Vilardell, Francesc, Lefever, Karolien, Liermann, Adriane, Hoffmann, Agnes I. D., Steiper, Joerg, Cherix, Marc, Albrecht, Simon, Russo, Pedro, Strodl, Thomas, Wahlin, Rurik, Deroo, Pieter, Parmar, Arvind, Lund, Niels, Hasinger, Guenther
Publikováno v:
Journal: Photonics for Space Environments X. Edited by Taylor, Edward W. Proceedings of the SPIE, Volume 58981J, 2005
Gamma ray bursts (GRBs) are the most energetic eruptions known in the Universe. Instruments such as Compton-GRO/BATSE and the GRB monitor on BeppoSAX have detected more than 2700 GRBs and, although observational confirmation is still required, it is
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511310
Autor:
Werner, K., Hoffmann, A. I. D., Jahn, D., Rauch, T., Reiff, E., Traulsen, I., Kruk, J. W., Dreizler, S.
Publikováno v:
AIP Conf.Proc.804:129-132,2006
We present new results from our spectral analyses of very hot central stars achieved since the last IAU Symposium on planetary nebulae held in Canberra 2001. The analyses are mainly based on UV and far-UV spectroscopy performed with the Hubble Space
Externí odkaz:
http://arxiv.org/abs/astro-ph/0508108
We report on an on-going analysis of high-resolution UV spectra of hot hydrogen-rich central stars of planetary nebulae (CSPN), obtained with the Hubble Space Telescope and FUSE. Since UV spectra of many CSPN are dominated by Fe and Ni lines, we inte
Externí odkaz:
http://arxiv.org/abs/astro-ph/0411404
High-resolution UV spectra, obtained with HST and FUSE, enable us to analyse hot hydrogen-rich central stars in detail. Up to now, optical hydrogen and helium lines have been used to derive temperature and surface gravity. Those lines, however, are r
Externí odkaz:
http://arxiv.org/abs/astro-ph/0411403
Autor:
Paredes, Josep M., Reimer, Olaf, Torres, Diego F., Hoffmann, A. I. D., Horns, D., Santangelo, A.
Publikováno v:
Multi-Messenger Approach to High-Energy Gamma-Ray Sources; 2007, p215-219, 5p
Autor:
Paredes, Josep M., Reimer, Olaf, Torres, Diego F., Horns, D., Aharonian, F., Hoffmann, A. I. D., Santangelo, A.
Publikováno v:
Multi-Messenger Approach to High-Energy Gamma-Ray Sources; 2007, p189-195, 7p
Autor:
Werner, Klaus, Hoffmann, Agnes I. D., Jahn, Dorothee, Rauch, Thomas, Reiff, Elke, Traulsen, Iris, Kruk, Jeffrey W., Dreizler, Stefan
Publikováno v:
AIP Conference Proceedings; 2005, Vol. 804 Issue 1, p129-132, 4p, 4 Graphs