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Ahnen, M. L. ; Ansoldi, S. ; Antonelli, L. A. ; Arcaro, C. ; Babie, A. ; Banerjee, B. ; Bangale, P. ; de Almeida, U. Barres ; Barrio, J. A. ; Gonzalez, J. Becerra ; Bednarek, W. ; Bernardini, E. ; Berti, A. ; Biasuzzi, B. ; Biland, A. ; Blanch, O. ; Bonnefoy, S. ; Bonnoli, G. ; Borracci, F. ; Carosi, R. ; Carosi, A. ; Chatterjee, A. ; Colin, P. ; Colombo, E. ; Contreras, J. L. ; Cortina, J. ; Covino, S. ; Cumani, P. ; Da Vela, P. ; Dazzi, F. ; De Angelis, A. ; De Lotto, B. ; Wilhelmi, E. de Ona ; Di Pierro, F. ; Doert, M. ; Dominguez, A. ; Prester, D. Dominis ; Dorner, D. ; Doro, M. ; Einecke, S. ; Glawion, D. Eisenacher ; Elsaesser, D. ; Engelkemeier, M. ; Ramazani, V. Fallah ; Fernandez-Barra, A. ; Fidalgo, D. ; Fonseca, M. V. ; Font, L. ; Fruck, C. ; Galindo, D. ; Lopez, R. J. Garcia ; Garczarczyk, M. ; Gaug, M. ; Giammaria, P. ; Godinovie, N. ; Gora, D. ; Griffiths, S. ; Guberman, D. ; Hadasch, D. ; Hahn, A. ; Hassan, T. ; Hayashida, M. ; Herrera, J. ; Hose, J. ; Hrupec, D. ; Hughes, G. ; Ishio, K. ; Konno, Y. ; Kubo, H. ; Kushida, J. ; Kuvezdie, D. ; Lelas, D. ; Lindfors, E. ; Lombardi, S. ; Longo, F. ; Lopez, M. ; Lopez-Oramas, A. ; Majumdar, P. ; Makariev, M. ; Maneva, G. ; Manganaro, M. ; Mannheim, K. ; Maraschi, L. ; Mariotti, M. ; Martinez, M. ; Mazin, D. ; Menzel, U. ; Minev, M. ; Mirzoyan, R. ; Moralejo, A. ; Moreno, V. ; Moretti, E. ; Munar-Adrover, P. ; Neustroev, V. ; Niedzwiecki, A. ; Rosillo, M. Nievas ; Nilsson, K. ; Nishijima, K. ; Noda, K. ; Nogues, L. ; Paiano, S. ; Palacio, J. ; Paneque, D. ; Paoletti, R. ; Paredes, J. M. ; Paredes-Fortuny, X. ; Pedaletti, G. ; Peresano, M. ; Perri, L. ; Persic, M. ; Moroni, P. G. Prada ; Prandini, E. ; Puljak, I. ; Garcia, J. R. ; Reichardt, I. ; Rhode, W. ; Riti, M. ; Rico, J. ; Saito, T. ; Satalecka, K. ; Schroeder, S. ; Schweizer, T. ; Shore, S. N. ; Sillanpaa, A. ; Sitarek, J. ; Sobczynskall, D. ; Stamerra, A. ; Strzys, M. ; Surie, T. ; Takalo, L. ; Tavecchio, F. ; Temnikov, P. ; Terzie, T. ; Tescaro, D. ; Teshima, M. ; Torres, D. F. ; Torres-Alla, N. ; Treves, A. ; Vanzo, G. ; Acosta, M. Vazquez ; Vovk, I. ; Ward, J. E. ; Will, M. ; Wu, M. H. ; Zarie, D. ; Abdalla, Hassan E. ; Abramowski, A. ; Aharonian, Felix A. ; Benkhali, F. Ait ; Akhperjanian, A. G. ; Andersson, T. ; Angüner, Ekrem Oǧuzhan ; Arakawa, M. ; Arrieta, M. ; Aubert, P. ; Backes, M. ; Balzer, A. ; Barnard, M. ; Becherini, Y. ; Tjus, J. Becker ; Berge, D. ; Bernhard, S. ; Bernlohr, K. ; Blackwell, R. ; Bottcher, M. ; Boisson, C. ; Bolmont, J. ; Bordas, Pol ; Bregeon, J. ; Brun, F. ; Brun, P. ; Bryan, M. ; Btichele, M. ; Bulik, T. ; Capasso, M. ; Carr, J. ; Casanova, Sabrina ; Cerruti, M. ; Chakraborty, N. ; Chalme-Calvet, R. ; Chaves, R. C. G. ; Chen, A. ; Chevalier, J. ; Chretien, M. ; Coffaro, M. ; Colafrancesco, S. ; Cologna, G. ; Condon, B. ; Conrad, J. ; Cui, Y. ; Davids, I. D. ; Decock, J. ; Degrange, B. ; Dei, C. ; Devin, J. ; Dewilt, P. ; Dirson, L. ; Djannati-Atai, A. ; Domainko, W. ; Donath, A. ; Dutson, K. ; Dyks, J. ; Edwards, T. ; Egberts, Kathrin ; Eger, P. ; Ernenwein, J. -P. ; Eschbach, S. ; Farnier, C. ; Fegan, S. ; Fernandes, M. V. ; Fiasson, A. ; Fontaine, G. ; Forster, A. ; Funk, S. ; Ftifiling, M. ; Gabici, S. ; Gajdus, M. ; Gallant, Y. A. ; Garrigoux, T. ; Giavitto, G. ; Giebels, B. ; Glicenstein, J. F. ; Gottschal, D. ; Goya, A. ; Grondin, M. -H. ; Hahn, J. ; Haupt, M. ; Hawkes, J. ; Heinzelmann, G. ; Henri, G. ; Hermann, G. ; Hervet, O. ; Hinton, J. A. ; Hofmann, W. ; Hoischen, Clemens ; Holler, M. ; Horns, D. ; Ivascenko, A. ; Iwasaki, H. ; Jacholkowska, A. ; Jamrozy, M. ; Janiak, M. ; Jankowsky, D. ; Jankowsky, F. ; Jingo, M. ; Jogler, T. ; Jouvin, L. ; Jung-Richardt, I. ; Kastendieck, M. A. ; Katarzyfiski, K. ; Katsuragawa, M. ; Katz, U. ; Kerszberg, D. ; Khangulyan, D. ; Khelifi, B. ; Kieffer, M. ; King, J. ; Klepser, S. ; Klochkov, D. ; Kluiniak, W. ; Kolitzus, D. ; Komin, Nu. ; Kosack, K. ; Krakau, S. ; Kraus, M. ; Krtiger, P. P. ; Laffon, H. ; Lamanna, G. ; Lau, J. ; Lees, J. -P. ; Lefaucheur, J. ; Lefranc, V. ; Lemiere, A. ; Lemoine-Goumard, M. ; Lenain, J. -P. ; Leser, Eva ; Lohse, T. ; Lorentz, M. ; Liu, R. ; Lopez-Coto, R. ; Lypova, I. ; Marandon, V. ; Marcowith, Alexandre ; Mariaud, C. ; Marx, R. ; Maurin, G. ; Maxted, N. ; Mayer, M. ; Meintjes, P. J. ; Meyer, M. ; Mitche, A. M. W. ; Moderski, R. ; Mohamed, M. ; Mohrmann, L. ; Mora, K. ; Moulin, Emmanuel ; Murach, T. ; Nakashima, S. ; De Naurois, M. ; Niederwanger, F. ; Niemiec, J. ; Oakes, L. ; Odaka, H. ; Ott, S. ; Ohm, S. ; Ostrowski, M. ; Oya, I. ; Padovani, M. ; Panter, M. ; Parsons, R. D. ; Pekeur, N. W. ; Pelletier, G. ; Perennes, C. ; Petrucci, P. -O. ; Peyaud, B. ; Pie, Q. ; Pita, S. ; Poon, H. ; Prokhorov, D. ; Prokoph, H. ; Ptffilhofer, G. ; Punch, M. ; Quirrenbach, A. ; Raab, S. ; Reimer, A. ; Reimer, O. ; Renaud, M. ; De Los Reyes, R. ; Richter, S. ; Rieger, F. ; Romoli, C. ; Rowell, G. ; Rudak, B. ; Rulten, C. B. ; Safi-Harb, S. ; Sahakian, V. ; Saito, S. ; Salek, D. ; Sanchez, D. A. ; Santangelo, A. ; Sasaki, M. ; Schlickeiser, R. ; Schtissler, F. ; Schulz, A. ; Schwanke, U. ; Schwemmer, S. ; Seglar-Arroyo, M. ; Settimo, M. ; Seyffert, A. S. ; Shafi, N. ; Shilon, I. ; Simoni, R. ; So, H. ; Spanier, F. ; Spengler, G. ; Spies, F. ; Stawarz, L. ; Steenkamp, R. ; Stegmann, Christian ; Stycz, K. ; Sushch, I. ; Takahashi, T. ; Tavernet, J. -P. ; Tavernier, T. ; Taylor, A. M. ; Terrier, R. ; Tibaldo, L. ; Tiziani, D. ; Tluczykont, M. ; Trichard, C. ; Tsuji, N. ; Tuffs, R. ; Uchiyama, Y. ; Van der Walt, D. J. ; Van Eldik, C. ; Van Rensburg, C. ; Van Soelen, B. ; Vasileiadis, G. ; Veh, J. ; Venter, C. ; Viana, A. ; Vincent, P. ; Vink, J. ; Voisin, F. ; Vok, H. J. ; Vuillaume, T. ; Wadiasingh, Z. ; Wagner, S. J. ; Wagner, P. ; Wagner, R. M. ; White, R. ; Wierzcholska, A. ; Willmann, P. ; Wornlein, A. ; Wouters, D. ; Yang, R. ; Zabalza, V. ; Zaborov, D. ; Zacharias, M. ; Zanin, R. ; Zdziarski, A. A. ; Zech, Alraune ; Zefi, F. ; Ziegler, A. ; Zywuckan, N.
Context. The large jet kinetic power and non-thermal processes occurring in the microquasar SS 433 make this source a good candidate for a very high-energy (VHE) gamma-ray emitter. Gamma-ray fluxes above the sensitivity limits of current Cherenkov telescopes have been predicted for both the central X-ray binary system and the interaction regions of SS 433 jets with the surrounding W50 nebula. Non-thermal emission at lower energies has been previously reported, indicating that efficient particle acceleration is taking place in the system. Aims. We explore the capability of SS 433 to emit VHE gamma rays during periods in which the expected flux attenuation due to periodic eclipses (P-orb similar to 13.1 days) and precession of the circumstellar disk (P-pre similar to 162 days) periodically covering the central binary system is expected to be at its minimum. The eastern and western SS 433/W50 interaction regions are also examined using the whole data set available. We aim to constrain some theoretical models previously developed for this system with our observations. Methods. We made use of dedicated observations from the Major Atmospheric Gamma Imaging Cherenkov telescopes (MAGIC) and High Energy Spectroscopic System (H.E.S.S.) of SS 433 taken from 2006 to 2011. These observation were combined for the first time and accounted for a total effective observation time of 16.5 h, which were scheduled considering the expected phases of minimum absorption of the putative VHE emission. Gamma-ray attenuation does not affect the jet/medium interaction regions. In this case, the analysis of a larger data set amounting to similar to 40-80 h, depending on the region, was employed. Results. No evidence of VHE gamma-ray emission either from the central binary system or from the eastern/western interaction regions was found. Upper limits were computed for the combined data set. Differential fluxes from the central system are found to be less than or similar to 10(-12)-10(-13) TeV-1 cm(-2) s(-1) in an energy interval ranging from similar to few x 100 GeV to similar to few TeV. Integral flux limits down to similar to 10(-12)-10(-13) ph cm(-2) s(-1) and similar to 10(-13)-10(-14) ph cm(-2) s(-1) are obtained at 300 and 800 GeV, respectively. Our results are used to place constraints on the particle acceleration fraction at the inner jet regions and on the physics of the jet/medium interactions. Conclusions. Our findings suggest that the fraction of the jet kinetic power that is transferred to relativistic protons must be relatively small in SS 433, q(p) <= 2.5 x 10(-5), to explain the lack of TeV and neutrino emission from the central system. At the SS 433/W50 interface, the presence of magnetic fields greater than or similar to 10 mu G is derived assuming a synchrotron origin for the observed X-ray emission. This also implies the presence of high-energy electrons with E-e up to 50 TeV, preventing an efficient production of gamma-ray fluxes in these interaction regions.
De Angelis, A. ; Tatischeff, V. ; Grenier, I. A. ; McEnery, J. ; Mallamaci, Manuela ; Tavani, M. ; Oberlack, U. ; Hanlon, L. ; Walter, R. ; Argan, A. ; Von Ballmoos, P. ; Bulgarelli, A. ; Bykov, A. ; Hernanz, M. ; Kanbach, G. ; Kuvvetli, I. ; Pearce, M. ; Zdziarski, A. ; Conrad, J. ; Ghisellini, G. ; Harding, A. ; Isern, J. ; Leising, M. ; Longo, F. ; Madejski, G. ; Martinez, M. ; Mazziotta, Mario Nicola ; Paredes, J. M. ; Pohl, Martin ; Rando, R. ; Razzano, M. ; Aboudan, A. ; Ackermann, M. ; Addazi, A. ; Ajello, M. ; Albertus, C. ; Alvarez, J. M. ; Ambrosi, G. ; Anton, S. ; Antonelli, L. A. ; Babic, A. ; Baibussinov, B. ; Balbom, M. ; Baldini, L. ; Balman, S. ; Bambi, C. ; Barres de Almeida, U. ; Barrio, J. A. ; Bartels, R. ; Bastieri, D. ; Bednarek, W. ; Bernard, D. ; Bernardini, E. ; Bernasconi, T. ; Bertucci, B. ; Biland, A. ; Bissaldi, E. ; Boettcher, M. ; Bonvicini, V. ; Bosch-Ramon, V. ; Bottacini, E. ; Bozhilov, V. ; Bretz, T. ; Branchesi, M. ; Brdar, V. ; Bringmann, T. ; Brogna, A. ; Jorgensen, C. Budtz ; Busetto, G. ; Buson, S. ; Busso, M. ; Caccianiga, A. ; Camera, S. ; Campana, R. ; Caraveo, P. ; Cardillo, M. ; Carlson, P. ; Celestin, S. ; Cermeno, M. ; Chen, A. ; Cheung, C. C. ; Churazov, E. ; Ciprini, S. ; Coc, A. ; Colafrancesco, S. ; Coleiro, A. ; Collmar, W. ; Coppi, P. ; Curado da Silva, R. ; Cutini, S. ; De Lotto, B. ; de Martino, D. ; De Rosa, A. ; Del Santo, M. ; Delgado, L. ; Diehl, R. ; Dietrich, S. ; Dolgov, A. D. ; Dominguez, A. ; Prester, D. Dominis ; Donnarumma, I. ; Dorner, D. ; Doro, M. ; Dutra, M. ; Elsaesser, D. ; Fabrizio, M. ; Fernandez-Barral, A. ; Fioretti, V. ; Foffano, L. ; Formato, V. ; Fornengo, N. ; Foschini, L. ; Franceschini, A. ; Franckowiak, A. ; Funk, S. ; Fuschino, F. ; Gaggero, D. ; Galanti, G. ; Gargano, F. ; Gasparrini, D. ; Gehrz, R. ; Giammaria, P. ; Giglietto, N. ; Giommi, P. ; Giordano, F. ; Giroletti, M. ; Ghirlanda, G. ; Godinovic, N. ; Gouiffes, C. ; Grove, J. E. ; Hamadache, C. ; Hartmann, D. H. ; Hayashida, M. ; Hryczuk, A. ; Jean, P. ; Johnson, T. ; Jose, J. ; Kaufmann, S. ; Khelifi, B. ; Kiener, J. ; Knodlseder, J. ; Kolem, M. ; Kopp, J. ; Kozhuharov, V. ; Labanti, C. ; Lalkovski, S. ; Laurent, P. ; Limousin, O. ; Linares, M. ; Lindfors, E. ; Lindner, M. ; Liu, J. ; Lombardi, S. ; Loparco, F. ; Lopez-Coto, R. ; Lopez Moya, M. ; Lott, B. ; Lubrano, P. ; Malyshev, D. ; Mankuzhiyil, N. ; Mannheim, K. ; Marcha, M. J. ; Marciano, A. ; Marcote, B. ; Mariotti, M. ; Marisaldi, M. ; McBreen, S. ; Mereghetti, S. ; Merle, A. ; Mignani, R. ; Minervini, G. ; Moiseev, A. ; Morselli, A. ; Moura, F. ; Nakazawa, K. ; Nava, L. ; Nieto, D. ; Orienti, M. ; Orio, M. ; Orlando, E. ; Orleanski, P. ; Paiano, S. ; Paoletti, R. ; Papitto, A. ; Pasquato, M. ; Patricelli, B. ; Perez-Garcia, M. A. ; Persic, M. ; Piano, G. ; Pichel, A. ; Pimenta, M. ; Pittori, C. ; Porter, T. ; Poutanen, J. ; Prandini, E. ; Prantzos, N. ; Produit, N. ; Profumo, S. ; Queiroz, F. S. ; Raino, S. ; Raklev, A. ; Regis, M. ; Reichardt, I. ; Rephaeli, Y. ; Rico, J. ; Rodejohann, W. ; Fernandez, G. Rodriguez ; Roncadelli, M. ; Roso, L. ; Rovero, A. ; Ruffini, R. ; Sala, G. ; Sanchez-Conde, M. A. ; Santangelo, A. ; Parkinson, P. Saz ; Sbarrato, T. ; Shearer, A. ; Shellard, R. ; Short, K. ; Siegert, T. ; Siqueira, C. ; Spinelli, P. ; Stamerra, A. ; Starrfield, S. ; Strong, A. ; Strumke, I. ; Tavecchio, F. ; Taverna, R. ; Terzic, T. ; Thompson, D. J. ; Tibolla, O. ; Torres, D. F. ; Turolla, R. ; Ulyanov, A. ; Ursi, A. ; Vacchi, A. ; Van den Abeele, J. ; Vankova-Kirilovai, G. ; Venter, C. ; Verrecchia, F. ; Vincent, P. ; Wang, X. ; Weniger, C. ; Wu, X. ; Zaharijas, G. ; Zampieri, L. ; Zane, S. ; Zimmer, S. ; Zoglauer, A.
Tatischeff, V. ; De Angelis, A. ; Tavani, M. ; Grenier, I. ; Oberlack, U. ; Hanlon, L. ; Walter, R. ; Argan, A. ; von Ballmoos, P. ; Bulgarelli, A. ; Donnarumma, I. ; Hernanz, Margarita ; Kuvvetli, I. ; Mallamaci, M. ; Pearce, M. ; Zdziarski, A. ; Aboudan, A. ; Ajello, M. ; Ambrosi, G. ; Bernard, D. ; Bernardini, E. ; Bonvicini, V. ; Brogna, A. ; Branchesi, M. ; Budtz-Jorgensen, C. ; Bykov, A. ; Campana, R. ; Cardillo, M. ; Ciprini, S. ; Coppi, P. ; Cumani, P. ; da Silva, R. M. Curado ; De Martino, D. ; Diehl, R. ; Doro, M. ; Fioretti, V. ; Funk, S. ; Ghisellini, G. ; Giordano, F. ; Grove, J. E. ; Hamadache, C. ; Hartmann, D. H. ; Hayashida, M. ; Isern, J. ; Kanbach, G. ; Kiener, J. ; Knodlseder, J. ; Labanti, C. ; Laurent, P. ; Leising, M. ; Limousin, O. ; Longo, F. ; Mannheim, K. ; Marisaldi, M. ; Martinez, M. ; Mazziotta, M. N. ; McEnery, J. E. ; Mereghetti, S. ; Minervini, G. ; Moiseev, A. ; Morselli, A. ; Nakazawa, K. ; Orleanski, P. ; Paredes, J. M. ; Patricelli, B. ; Peyre, J. ; Piano, G. ; Pohl, Martin ; Rando, R. ; Roncadelli, M. ; Tavecchio, F. ; Thompson, D. J. ; Turolla, R. ; Ulyanov, A. ; Vacchi, A. ; Wu, X. ; Zoglauer, A.
e-ASTROGAM is a concept for a breakthrough observatory space mission carrying a gamma-ray telescope dedicated to the study of the non-thermal Universe in the photon energy range from 0.15 MeV to 3 GeV. The lower energy limit can be pushed down to energies as low as 30 keV for gamma-ray burst detection with the calorimeter. The mission is based on an advanced space-proven detector technology, with unprecedented sensitivity, angular and energy resolution, combined with remarkable polarimetric capability. Thanks to its performance in the MeV-GeV domain, substantially improving its predecessors, e-ASTROGAM will open a new window on the non-thermal Universe, making pioneering observations of the most powerful Galactic and extragalactic sources, elucidating the nature of their relativistic outflows and their effects on the surroundings. With a line sensitivity in the MeV energy range one to two orders of magnitude better than previous and current generation instruments, e-ASTROGAM will determine the origin of key isotopes fundamental for the understanding of supernova explosion and the chemical evolution of our Galaxy. The mission will be a major player of the multiwavelength, multimessenger time-domain astronomy of the 2030s, and provide unique data of significant interest to a broad astronomical community, complementary to powerful observatories such as LISA, LIGO, Virgo, KAGRA, the Einstein Telescope and the Cosmic Explorer, IceCube-Gen2 and KM3NeT, SKA, ALMA, JWST, E-ELT, LSST, Athena, and the Cherenkov Telescope Array.
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