Exploring a SNR/molecular cloud association within HESS J1745-303
Santangelo, A.; Ripken, J.; Carrigan, S.; Farnier, C.; Funk, S.; Lemoine-Goumard, M.; Venter, C.; Schlickeiser, R.; Petrucci, P. -O.; Giebels, B.; Stawarz, Ł.; Fontaine, G.; Benbow, W.; Hauser, M.; Boisson, C.; Aharonian, F.; Akhperjanian, A. G.; Bazer-Bachi, A. R.; Beilicke, M.; Bernlöhr, K.; Bolz, O.; Braun, I.; Brown, A. M.; Chadwick, P. M.; Chounet, L. -M.; Cornils, R.; Costamante, L.; Degrange, B.; Djannati-Ataï, A.; O'C. Drury, L.; Dubus, G.; Emmanoulopoulos, D.; Espigat, P.; Feinstein, F.; Gallant, Y. A.; Glicenstein, J. F.; Goret, P.; Hadjichristidis, C.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J. A.; Hofmann, W.; Holleran, M.; Horns, D.; de Jager, O. C.; Khélifi, B.; Komin, Nu.; Latham, I. J.; Martineau-Huynh, O.; Lohse, T.; Marcowith, A.; Masterson, C.; McComb, T. J. L.; de Naurois, M.; Nolan, S. J.; Orford, K. J.; Osborne, J. L.; Panter, M.; Pelletier, G.; Pita, S.; Pühlhofer, G.; Punch, M.; Raubenheimer, B. C.; Raue, M.; Rayner, S. M.; Rob, L.; Rowell, G.; Sahakian, V.; Schwanke, U.; Sol, H.; Steenkamp, R.; Stegmann, C.; Tavernet, J. -P.; Terrier, R.; Vasileiadis, G.; Vincent, P.; Völk, H. J.; Wagner, S. J.; Ward, M.; Lamanna, G.; Vialle, J. P.; Kendziorra, E.; Renaud, M.; Barres de Almeida, U.; de Oña Wilhelmi, E.; Pedaletti, G.; Behera, B.; Borrel, V.; Bühler, R.; Bulik, T.; Büsching, I.; Boutelier, T.; Clapson, A. C.; Coignet, G.; Dalton, M.; Dickinson, H. J.; Domainko, W.; Dubois, F.; Dyks, J.; Egberts, K.; Fiasson, A.; Förster, A.; Füßling, M.; Glück, B.; Hauser, D.; Hoffmann, A.; Hoppe, S.; Jacholkowska, A.; Jung, I.; Katarzyński, K.; Kerschhaggl, M.; Keogh, D.; Kosack, K.; Lenain, J. -P.; Maurin, D.; Moderski, R.; Moulin, E.; Naumann-Godo, M.; Nedbal, D.; Nekrassov, D.; Ohm, S.; Ostrowski, M.; Rosier-Lees, S.; Rudak, B.; Ruppel, J.; Schöck, F. M.; Schwarzburg, S.; Schwemmer, S.; Shalchi, A.; Superina, G.; Tam, P. H.; van Eldik, C.; Vivier, M.; Volpe, F.; Zdziarski, A. A.; Zech, A.; Brion, E.; Martin, J. M.; Olive, J. -P.; Schröder, R.; Spangler, D.
Germany, Ireland, Armenia, United Kingdom, France, Poland, South Africa, United States, Czech Republic, Australia, Namibia
Abstract
Aims: HESS J1745-303 is an extended, unidentified VHE (very high energy) gamma-ray source discovered using HESS in the Galactic Plane Survey. Since no obvious counterpart has previously been found in longer-wavelength data, the processes that power the VHE emission are not well understood.
Methods: Combining the latest VHE data with recent XMM-Newton observations and a variety of source catalogs and lower-energy survey data, we attempt to match (from an energetic and positional standpoint) the various parts of the emission of HESS J1745-303 with possible candidates.
Results: Though no single counterpart is found to fully explain the VHE emission, we postulate that at least a fraction of the VHE source may be explained by a supernova-remnant/molecular-cloud association and/or a high-spin-down-flux pulsar.