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https://hdl.handle.net/2440/88390
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Type: | Journal article |
Title: | Dense gas towards the Rx J1713.7-3946 supernova remnant |
Author: | Maxted, N. Rowell, G. Dawson, B. Burton, M. Fukui, Y. Lazendic, J. Kawamura, A. Horachi, H. Sano, H. Walsh, A. Yoshiike, S. Fukuda, T. |
Citation: | Publications of the Astronomical Society of Australia, 2013; 30(1):e055-1-e055-14 |
Publisher: | Cambridge University Press |
Issue Date: | 2013 |
ISSN: | 1323-3580 1448-6083 |
Statement of Responsibility: | Nigel I. Maxted, Gavin P. Rowell, Bruce R. Dawson, Michael G. Burton, Yasuo Fukui, Jasmina Lazendic, Akiko Kawamura, Hirotaka Horachi, Hidetoshi Sano, Andrew J. Walsh, Satoshi Yoshiike, and Tatsuya Fukuda |
Abstract: | We present results from a Mopra 7 mm-wavelength survey that targeted the dense gas-tracing CS(1-0) transition towards the young γ-ray-bright supernova remnant, RX J1713.7–3946 (SNR G 347.3−0.5). In a hadronic γ-ray emission scenario, where cosmic ray (CR) protons interact with gas to produce the observed γ-ray emission, the mass of potential CR target material is an important factor. We summarise newly discovered dense gas components, towards Cores G and L, and Clumps N1, N2, N3, and T1, which have masses of 1 – 104 M⊙. We argue that these components are not likely to contribute significantly to γ-ray emission in a hadronic γ-ray emission scenario. This would be the case if RX J1713.7–3946 were at either the currently favoured distance of ~1 kpc or an alternate distance (as suggested in some previous studies) of ~6 kpc. This survey also targeted the shock-tracing SiO molecule. Although no SiO emission corresponding to the RX J1713.7–3946 shock was observed, vibrationally excited SiO(1-0) maser emission was discovered towards what may be an evolved star. Observations taken 1 yr apart confirmed a transient nature, since the intensity, line-width, and central velocity of SiO(J = 1-0,v = 1,2) emission varied significantly. |
Keywords: | cosmic rays; gamma rays: ISM; ISM: clouds; molecular data; supernovae: individual: RX J1713.7−3946 |
Rights: | © Astronomical Society of Australia 2013 |
DOI: | 10.1017/pasa.2013.35 |
Grant ID: | http://purl.org/au-research/grants/arc/DP0662810 http://purl.org/au-research/grants/arc/DP1096533 |
Published version: | http://dx.doi.org/10.1017/pasa.2013.35 |
Appears in Collections: | Aurora harvest 2 Chemistry and Physics publications |
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