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| « The Local Bubble: some like it hot? » |
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Barry Y. Welsh
Dept. Astron., Univ. California (Berkeley, California, Etats-Unis d'Amérique)
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The Sun resides in a 300 light-year diameter cavity of extremely low neutral gas density called the Local Bubble. It has been widely believed that this is a hot, interstellar bubble that contains million degree gas and that the emission from this hot gas is the responsible for the ubiquitous diffuse soft X-ray background radiation.
However, new data are casting doubts on the above picture and we present a review of recent observations made at many wavelengths that suggest that the Local Bubble may not, in fact, be the hot bubble that we thought it was!!
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vendredi 29 octobre 2004 - 11:00
Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris
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Page web du séminaire / Seminar's webpage
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