Zobrazeno 1 - 10
of 328
pro vyhledávání: '"Védrenne, G."'
Autor:
Isern, J., Jean, P., Bravo, E., Knödlseder, J., Lebrun, F., Churazov, E., Sunyaev, R., Domingo, A., Badenes, C., Hartmann, D. H., Hoeflich, P., Renaud, M., Soldi, S., Elias--Rosa, N., Hernanz, M., Domínguez, I., García-Senz, D., Lichti, G. G., Vedrenne, G., Von Ballmoos, P.
Publikováno v:
A&A 588, A67 (2016)
The optical light curve of Type Ia supernovae (SNIa) is powered by thermalized gamma-rays produced by the decay of 56Ni and 56Co, the main radioactive isotopes synthesized by the thermonuclear explosion of a C/O white dwarf. Gamma-rays escaping the e
Externí odkaz:
http://arxiv.org/abs/1602.02918
Autor:
Isern, J., Jean, P., Bravo, E., Diehl, R., Knödlseder, J., Domingo, A., Hirschmann, A., Hoeflich, P., Lebrun, F., Renaud, M., Soldi, S., Elias-Rosa, N., Hernanz, M., Kulebi, B., Zhang, X., Badenes, C., Domínguez, I., Garcia-Senz, D., Jordi, C., Lichti, G., Vedrenne, G., Von Ballmoos, P.
SN2011fe was detected by the Palomar Transient Factory on August 24th 2011 in M101 a few hours after the explosion. From the early optical spectra it was immediately realized that it was a Type Ia supernova thus making this event the brightest one di
Externí odkaz:
http://arxiv.org/abs/1302.3381
Autor:
Weidenspointner, G., Knoedlseder, J., Jean, P., Skinner, G. K., Roques, J. -P., Vedrenne, G., Milne, P., Teegarden, B. J., Diehl, R., Strong, A., Schanne, S., Cordier, B., Winkler, C.
The imaging spectrometer SPI on board ESA's INTEGRAL observatory provides us with an unprecedented view of positron annihilation in our Galaxy. The first sky maps in the 511 keV annihilation line and in the positronium continuum from SPI showed a puz
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702621
Autor:
Weidenspointner, G., Shrader, C. R., Knoedlseder, J., Jean, P., Lonjou, V., Guessoum, N., Diehl, R., Gillard, W., Harris, M. J., Skinner, G. K., von Ballmoos, P., Vedrenne, G., Roques, J. -P., Schanne, S., Sizun, P., Teegarden, B. J., Schoenfelder, V., Winkler, C.
We present a measurement of the sky distribution of positronium (Ps) annihilation continuum emission obtained with the SPI spectrometer on board ESA's INTEGRAL observatory. The only sky region from which significant Ps continuum emission is detected
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601673
Autor:
Knödlseder, J., Jean, P., Lonjou, V., Weidenspointner, G., Guessoum, N., Gillard, W., Skinner, G., von Ballmoos, P., Vedrenne, G., Roques, J. -P., Schanne, S., Teegarden, B., Schönfelder, V., Winkler, C.
Publikováno v:
Astron.Astrophys.441:513-532,2005
We present a map of 511 keV electron-positron annihilation emission, based on data accumulated with the SPI spectrometer aboard ESA's INTEGRAL gamma-ray observatory, that covers approximately 95% of the celestial sphere. 511 keV line emission is sign
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506026
SPI observations of positron annihilation radiation from the 4th galactic quadrant: sky distribution
Autor:
Weidenspointner, G., Lonjou, V., Knoedlseder, J., Jean, P., Allain, M., von Ballmoos, P., Harris, M. J., Skinner, G. K., Vedrenne, G., Teegarden, B. J., Gehrels, N., Guessoum, N., Schoenfelder, V., Chapuis, C., Durouchoux, Ph., Cisana, E., Valsesia, M.
During its first year in orbit the INTEGRAL observatory performed deep exposures of the Galactic Center region and scanning observations of the Galactic plane. We report on the status of our analysis of the positron annihilation radiation from the 4t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406178
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:
Cordier, B., Attie, D., Casse, M., Paul, J., Schanne, S., Sizun, P., Jean, P., Roques, J. -P., Vedrenne, G.
The 511 keV emission from the Galactic Bulge observed by INTEGRAL/SPI could be the product of light (1-100 MeV) annihilating dark matter particles. In order to distinguish between annihilating light dark matter scenarios and more conventional astroph
Externí odkaz:
http://arxiv.org/abs/astro-ph/0404499
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