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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2217
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dc.contributor.authorMenon, Srikumar M.-
dc.contributor.authorRoshi, Anish D.-
dc.contributor.authorPrasad, Rajendra T.-
dc.date.accessioned2007-04-03T05:36:22Z-
dc.date.available2007-04-03T05:36:22Z-
dc.date.issued2005-01-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2005, Vol.356, Issue 3, p958-962.en
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/2289/2217-
dc.descriptionRestricted Access. An open access version is available at arXiv.org.(one of the alternative locations)en
dc.description.abstractWe present the results of a search for the ground-state hyperfine transition of the OH radical near 53 MHz using the National Mesosphere-Stratosphere-Troposphere (MST) Radar Facility at Gadanki, India. The observed position was G48.4-1.4 near the Galactic plane. The OH line is not detected. We place a 3σ upper limit for the line flux density at 39 Jy from our observations. We also did not detect recombination lines (RLs) of carbon, which were within the frequency range of our observations. The 3σ upper limit of 20 Jy obtained for the flux density of carbon RLs, along with observations at 34.5 and 327 MHz, are used to constrain the physical properties of the line-forming region. Our upper limit is consistent with the line emission expected from a partially ionized region with electron temperature, density and path lengths in the range 20-300 K, 0.03-0.3 cm-3 and 0.1-170 pc, respectively.en
dc.format.extent8338 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherBlackwell Publishing for the Royal Astronomical Societyen
dc.relation.urihttp://arxiv.org/abs/astro-ph/0501649en
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2005MNRAS.356..958Men
dc.relation.urihttp://dx.doi.org/10.1111/j.1365-2966.2004.08517.xen
dc.rights2005 Blackwell Publishing for the Royal Astronomical Societyen
dc.subjectISM: generalen
dc.subjectISM: lines and bandsen
dc.subjectISM: moleculesen
dc.subjectGalaxy: generalen
dc.subjectradio lines: generalen
dc.subjectradio lines: ISMen
dc.titleA search for the 53-MHz OH line near G48.4-1.4 using the National MST Radar Facilityen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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