Zobrazeno 1 - 10
of 612
pro vyhledávání: '"Kretschmer K"'
Autor:
Wang, W., Lang, M. G., Diehl, R., Halloin, H., Jean, P., Knödlseder, J., Kretschmer, K., Martin, P., Roques, P., Strong, A. W., Winkler, C., Zhang, X. L.
Publikováno v:
Astron. Astrophys., 2009, 496, 713
Gamma-ray line emission from the radioactive decay of 26Al reflects nucleosynthesis in massive stars and supernovae. We use INTEGRAL 26Al measurements to characterize the distribution and characteristics of 26Al source regions throughout the Galaxy.
Externí odkaz:
http://arxiv.org/abs/0902.0211
Autor:
Wang, W., Harris, M. J., Diehl, R., Halloin, H., Cordier, B., Strong, A. W., Kretschmer, K., Knoedlseder, J., Jean, P., Lichti, G. G., Roques, J. P., Schanne, S., von Kienlin, A., Weidenspointner, G., Wunderer, C.
Publikováno v:
Astron.Astrophys.469:1005,2007
Gamma-ray line emission from radioactive decay of 60Fe provides constraints on nucleosynthesis in massive stars and supernovae. The spectrometer SPI on board INTEGRAL has accumulated nearly three years of data on gamma-ray emission from the Galactic
Externí odkaz:
http://arxiv.org/abs/0704.3895
Autor:
Diehl, R., Halloin, H., Kretschmer, K., Strong, A. W., Wang, W., Jean, P., Lichti, G. G., Knoedlseder, J., Roques, J. -P., Schanne, S., Schoenfelder, V., von Kienlin, A., Weidenspointner, G., Winkler, C., Wunderer, C.
Publikováno v:
Astron.Astrophys. 449 (2006) 1025-1031
We performed a spectroscopic study of the 1809 keV gamma-ray line from 26Al decay in the Galaxy using the SPI imaging spectrometer with its high-resolution Ge detector camera on the INTEGRAL observatory. We analyzed observations of the first two miss
Externí odkaz:
http://arxiv.org/abs/astro-ph/0512334
Autor:
Knödlseder, J., Valsesia, M., Allain, M., Boggs, S., Diehl, R., Jean, P., Kretschmer, K., Roques, J. -P., Schönfelder, V., Vedrenne, G., von Ballmoos, P., Weidenspointner, G., Winkler, C.
We present first results on the observation of 1809 keV gamma-ray line emission from the Cygnus X region with the SPI imaging spectrometer. Our analysis is based on data from the performance verification phase of the INTEGRAL instruments and comprise
Externí odkaz:
http://arxiv.org/abs/astro-ph/0405501
Autor:
Diehl, R., Kretschmer, K., Lichti, G., Schönfelder, V., Strong, A. W., von Kienlin, A., Knödlseder, J., Jean, P., Lonjou, V., Weidenspointner, G., Roques, J. -P., Vedrenne, G., Schanne, S., Mowlavi, N., Winkler, C., Wunderer, C.
Al(26) radioactivity traces recent nucleosynthesis throughout the Galaxy, and is known to be produced in massive stars and novae. The map from its decay gamma-ray line suggests massive stars to dominate, but high-resolution line spectroscopy is expec
Externí odkaz:
http://arxiv.org/abs/astro-ph/0405192
Autor:
Knodlseder, J., Cisana, E., Diehl, R., Lichti, G., Harris, M., Jean, P., Kretschmer, K., von Kienlin, A., Roques, J. -P., Schanne, S., Schonfelder, V., Vedrenne, G., Weidenspointner, G., Wunderer, C.
The search for gamma-ray line emission from the radioactive decay of 60Fe figures among the prime scientific objectives of the INTEGRAL mission. 60Fe is believed to be primarily produced in core-collapse supernovae, although other sites, such as carb
Externí odkaz:
http://arxiv.org/abs/astro-ph/0404027
Publikováno v:
Astron.Astrophys. 412 (2003) L47-L51
The shape of the gamma-ray line from radioactive 26Al, at 1808.7 keV energy in the frame of the decaying isotope, is determined by its kinematics when it decays, typically 10^6 y after its ejection into the interstellar medium from its nucleosynthesi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0311218
Autor:
Diehl, R., Knödlseder, J., Lichti, G., Kretschmer, K., Schanne, S., Schönfelder, V., von Kienlin, A., Weidenspointner, G., Winkler, C., Wunderer, C.
Publikováno v:
Astron.Astrophys.411:L451,2003
The precision measurement of the 1809 keV gamma-ray line from Galactic $^{26}$Al is one of the goals of the SPI spectrometer on INTEGRAL with its Ge detector camera. We aim for determination of the detailed shape of this gamma-ray line, and its varia
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309097
Monte Carlo simulations of Galactic Supernovae are carried out to study the rate of nearby events, which may have a direct effect on Earth's ecology though ionizing radiation and cosmic ray bombardment. A nearby supernova may have left a radioactive
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205110
The COMPTEL observations of the diffuse galactic 1.809 MeV emission attributed to the radioactive decay of 26Al have confirmed the diffuse nature of this interstellar emission line. One of the most significant features of the reconstructed intensity
Externí odkaz:
http://arxiv.org/abs/astro-ph/0108015