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arXiv · 1404.3463

Investigation of Dense Gas Towards Relativistic Outflow Sources

J. Hawkes·G. Rowell·B. Dawson·F. Aharonian·M. Burton·Y. Fukui·N. Furukawa·T. Hayakawa·A. Kawamura·N. Maxted·E. de Õna-Wilhelmi·P. de Wilt·A. Walsh
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Abstract

We probe the interstellar medium towards the objects Circinus X-1, a low-mass X-ray binary with relativistic jets; and the highly energetic Westerlund 2 stellar cluster, which is located towards TeV gamma-ray emission and interesting arc- and jet-like features seen in Nanten 12CO data. We have mapped both regions with the Mopra radio telescope, in 7 mm and 12 mm wavebands, looking for evidence of disrupted/dense gas caused by the interaction between high energy outflows and the ISM. Towards Westerlund 2, peaks in CS(J=1-0) emission indicate high density gas towards the middle of the arc and the endpoint of the jet; and radio recombination line emission is seen overlapping the coincident HII region RCW49. Towards Circinus X-1, 12CO(J=1-0) Nanten data reveals three molecular clouds that lie in the region of Cir X-1. Gas parameters for each cloud are presented here.

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J. Hawkes, G. Rowell, B. Dawson, F. Aharonian, M. Burton, Y. Fukui, N. Furukawa, T. Hayakawa, A. Kawamura, N. Maxted, E. de Õna-Wilhelmi, P. de Wilt, A. Walsh. 2014-04-14. Investigation of Dense Gas Towards Relativistic Outflow Sources. https://doi.org/10.1142/s2010194514601987

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