Radiative transfer in silylidene molecule
In order to search for silylidene (H2CSi) in the interstellar medium, Izuha
et al. (1996) recorded microwave spectrum of H2CSi in laboratory and made an
unsuccessful attempt of its identification in IRC +10216, Ori KL, Sgr B2,
through its 717-616 transition at 222.055 GHz. For finding out if there are
other transitions of H2CSi which may help in its identification in the
interstellar medium, we have considered 25 rotational levels of ortho-H2CSi
connected by collisional transitions and 35 radiative transitions, and solved
radiative transfer problem using the LVG approximation. We have found that
the brightness temperatures of 919-818, 918-817, 101,10-919, 1019-918,
111,11-101,10, 111,10-1019 and 121,12-111,11 transition are larger than that
of 717-616 transition. Thus, these transitions may help in detection of H2CSi
in the interstellar medium.
Document Type: Research Article
Affiliations: 1: Jiwaji University, School of Studies in Physics, Gwalior, India 2: Lovely Professional University, Physics Department, Phagwara, India
Publication date: 01 January 2014
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