Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astronet.ru/db/xware/msg/apod/2001-07-25
Дата изменения: Sun Aug 25 22:53:12 2002
Дата индексирования: Mon Apr 11 06:41:00 2016
Кодировка:

Поисковые слова: вечный календарь
Hot Gas Halo Detected Around Galaxy NGC 4631
Astronomy Picture of the Day
    


Hot Gas Halo Detected Around Galaxy NGC 4631
<< Yesterday 25.07.2001 Tomorrow >>
Hot Gas Halo Detected Around Galaxy NGC 4631
Credit & Copyright: Daniel Wang (U. Mass.) et al., Chandra, NASA
Explanation: Is our Milky Way Galaxy surrounded by a halo of hot gas? A step toward solving this long-standing mystery was taken recently with Chandra X-ray observations of nearby galaxy NGC 4631. In the above composite picture, newly resolved diffuse X-ray emission is shown in blue, superposed on a HST image showing massive stars in red. Since NGC 4631 is similar to the Milky Way, this observation indicates that our own Galaxy is indeed surrounded by a halo of hot X-ray emitting gas, although we are too close to clearly differentiate them from more nearby extended X-ray sources. The clusters of massive stars probably heat the halo gas. Exactly how this gas gets ejected into a halo is a topic of continuing research.

January
February
March
April
May
June
July
August
September
October
November
December
 < July 2001  >
Mo Tu We Th Fr Sa Su






1
2345678
9101112131415
16171819202122
23242526272829
3031




Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: hot gas - spiral galaxy - NGC 4631
Publications with words: hot gas - spiral galaxy - NGC 4631
See also:
All publications on this topic >>