Investigation of Dense Gas Towards Relativistic Outflow Sources

Hawkes, J.; Rowell, G.; Dawson, B.; Aharonian, Felix A.; Burton, M.; Fukui, Y.; Furukawa, N.; Hayakawa, T.; Kawamura, A.; Maxted, N.; de Ona Wilhelmi, Emma; de Wilt, P.; Walsh, A.

doi:10.1142/S2010194514601987

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Investigation of Dense Gas Towards Relativistic Outflow Sources

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Aharonian, Felix A.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Citation

Hawkes, J., Rowell, G., Dawson, B., Aharonian, F. A., Burton, M., Fukui, Y., et al. (2014). Investigation of Dense Gas Towards Relativistic Outflow Sources. International Journal of Modern Physics: Conference Series, 28: 1460198. doi:10.1142/S2010194514601987.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-02A6-2

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.