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Cygnus X-1 |
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Cygnus X-1 [′sig·nəs ‚eks ′wən]
(astrophysics) A source of x-rays whose intensity varies in an irregular manner, associated with a weak variable radio source and a ninth-magnitude spectroscopic binary star, designated HDE226868, that consists of a blue supergiant and an invisible companion, which may be a black hole. Abbreviated Cyg X-1. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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HDE 226868 |
HDD caddy HDD cradle HDD Usage Time Record HDDA HDDC HDDCF HDDCS HDDD HDDD2 Hdde HDDEO HDDI HDDL HDDP HDDR HDDRISC HDDS HDDS HDDS HDDT HDDU HDDV Hddvd Hddvd HDDW Hde HDE 226868 HDEARTHDEC HDECERT HDEE HDEHP HDEL HDEO HDEP HDEPS HDER HDERU HDES HDESD HDEWG HDF HDF HDF DIFAR HDF-EOS HDF-S HDF5 HDFA HDFAQ HDFC HDFCSL HDFCU | |||||
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