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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1354
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dc.contributor.authorDwarakanath, K.S.-
dc.date.accessioned2006-06-12T10:17:36Z-
dc.date.available2006-06-12T10:17:36Z-
dc.date.issued2004-09-
dc.identifier.citationBulletin of the Astronomical Society of India, 2004, Vol.32, p215-221en
dc.identifier.issn0304-9523-
dc.identifier.urihttp://hdl.handle.net/2289/1354-
dc.description.abstractA high latitude HI 21 cm-line absorption survey towards extragalactic sources was recently completed using the Giant Meterwave Radio Telescope (GMRT). A total of 104 sources with |b|>15o and with a 21 cm ¤ux density greater than 1 Jy were observed for ~120 hours. With an optical depth detection limit of ~ 0.01 this is the most sensitive high-latitude survey as yet. Most of the detected HI 21 cm-line absorption features belong to a population with a velocity dispersion of ~7.6 km s-1. These are the standard HI clouds and have been well-studied for decades. However, we also detect a second population of absorbing clouds with a velocity dispersion of ~ 21 km s-1. About 20% of the total population of absorbing clouds belong to this population. This new population of fast clouds can be identified with a similar velocity dispersion Ca II absorbing clouds and with the Halo clouds recently detected in HI emission from Green Bank.en
dc.format.extent137115 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherThe Astronomical Society of Indiaen
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?2004BASI...32..215Den
dc.rights(2004) by the Astronomical Society of India.en
dc.subjectISM: cloudsen
dc.subjectkinematics and dynamics Radio linesen
dc.subjectISMen
dc.titleKinematics of diffuse interstellar clouds: recent GMRT resultsen
dc.typeArticleen
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