Browsing by Author "Viaux, N."

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Dark matter line searches with the Cherenkov Telescope Array
    (2024) Abe, S.; Abhir, J.; Abhishek, A.; Acero, F.; Acharyya, A.; Adam, R.; Aguasca-Cabot, A.; Agudo, I.; Aguirre-Santaella, A.; Alfaro, J.; Alfaro, R.; Alvarez-Crespo, N.; Alves Batista, R.; Amans, J. -P.; Amato, E.; Ambrosi, G.; Angel, L.; Aramo, C.; Arcaro, C.; Arnesen, T. T. H.; Arrabito, L.; Asano, K.; Ascasibar, Y.; Aschersleben, J.; Ashkar, H.; Backes, M.; Baktash, A.; Balazs, C.; Balbo, M.; Baquero Larriva, A.; Martins, V. Barbosa; Barres de Almeida, U.; Barrio, J. A.; Batkovic, I.; Batzofin, R.; Baxter, J.; Becerra Gonzalez, J.; Beck, G.; Benbow, W.; Berge, D.; Bernardini, E.; Bernete, J.; Bernloehr, K.; Berti, A.; Bertucci, B.; Bhattacharjee, P.; Bhattacharyya, S.; Bigongiari, C.; Biland, A.; Bissaldi, E.; Biteau, J.; Blanch, O.; Blazek, J.; Bocchino, F.; Boisson, C.; Bolmont, J.; Bonnoli, G.; Bonollo, A.; Bordas, P.; Bosnjak, Z.; Bottacini, E.; Bottcher, M.; Bringmann, T.; Bronzini, E.; Brose, R.; Brown, A. M.; Brunelli, G.; Bulgarelli, A.; Bulik, T.; Burelli, I.; Burmistrov, L.; Burton, M.; Buscemi, M.; Bylund, T.; Cailleux, J.; Campoy-Ordaz, A.; Cantlay, B. K.; Capasso, G.; Caproni, A.; Capuzzo-Dolcetta, R.; Caraveo, P.; Caroff, S.; Carosi, A.; Carosi, R.; Carquin, E.; Carrasco, M. -S.; Cassol, F.; Castaldini, L.; Castrejon, N.; Castro-Tirado, A. J.; Cerasole, D.; Cerruti, M.; Chadwick, P. M.; Chaty, S.; Chen, A. W.; Chernyakova, M.; Chiavassa, A.; Chudoba, J.; Chytka, L.; Cicciari, G. M.; Cifuentes, A.; Coimbra Araujo, C. H.; Colapietro, M.; Conforti, V.; Conte, F.; Contreras, J. L.; Costa, A.; Costantini, H.; Cotter, G.; Cristofari, P.; Cuevas, O.; Curtis-Ginsberg, Z.; D'Amico, G.; D'Ammando, F.; Dai, S.; Dalchenko, M.; Dazzi, F.; De Angelis, A.; de Lavergne, M. de Bony; De Caprio, V.; de Gouveia Dal Pino, E. M.; De Lotto, B.; De Lucia, M.; de Menezes, R.; de Naurois, M.; de Souza, V.; del Peral, L.; del Valle, M. V.; Delgado Giler, A. G.; Delgado Mengual, J.; Delgado, C.; Dell'aiera, M.; della Volpe, D.; Depaoli, D.; Di Girolamo, T.; Di Piano, A.; Di Pierro, F.; Di Tria, R.; Di Venere, L.; Diaz, C.; Diebold, S.; Dinesh, A.; Djuvsland, J.; Dominik, R. M.; Prester, D. Dominis; Donini, A.; Dorner, D.; Doerner, J.; Doro, M.; Dournaux, J. -L.; Duangchan, C.; Dubos, C.; Ducci, L.; Dwarkadas, V. V.; Ebr, J.; Eckner, C.; Egberts, K.; Einecke, S.; Elsaesser, D.; Emery, G.; Errando, M.; Escanuela, C.; Escarate, P.; Godoy, M. Escobar; Escudero, J.; Esposito, P.; Ettori, S.; Falceta-Goncalves, D.; Fedorova, E.; Fegan, S.; Feng, Q.; Ferrand, G.; Ferrarotto, F.; Fiandrini, E.; Fiasson, A.; Filipovic, M.; Fioretti, V.; Fiori, M.; Foffano, L.; Font Guiteras, L.; Fontaine, G.; Froese, S.; Fukazawa, Y.; Fukui, Y.; Furniss, A.; Galanti, G.; Galaz, G.; Galelli, C.; Gallozzi, S.; Gammaldi, V.; Garczarczyk, M.; Gasbarra, C.; Gasparrini, D.; Ghalumyan, A.; Gianotti, F.; Giarrusso, M.; Giesbrecht Formiga Paiva, J. G.; Giglietto, N.; Giordano, F.; Giuffrida, R.; Glicenstein, J. -F.; Glombitza, J.; Goldoni, P.; Gonzalez, J. M.; Gonzalez, M. M.; Goulart Coelho, J.; Gradetzke, T.; Granot, J.; Grasso, D.; Grau, R.; Greaux, L.; Green, D.; Green, J. G.; Grolleron, G.; Guedes, L. M. V.; Gueta, O.; Hackfeld, J.; Hadasch, D.; Hamal, P.; Hanlon, W.; Hara, S.; Harvey, V. M.; Hassan, T.; Hayashi, K.; Hess, B.; Heckmann, L.; Heller, M.; Hernandez Cadena, S.; Hervet, O.; Hinton, J.; Hiroshima, N.; Hnatyk, B.; Hnatyk, R.; Hofmann, W.; Holder, J.; Horan, D.; Horvath, P.; Hovatta, T.; Hrabovsky, M.; Hrupec, D.; Iarlori, M.; Inada, T.; Incardona, F.; Inoue, S.; Inoue, Y.; Iocco, F.; Iori, M.; Ishio, K.; Jamrozy, M.; Janecek, P.; Jankowsky, F.; Jean, P.; Jimenez Quiles, J.; Jin, W.; Juramy-Gilles, C.; Jurysek, J.; Kagaya, M.; Kalekin, O.; Karas, V.; Katagiri, H.; Kataoka, J.; Kaufmann, S.; Kazanas, D.; Kerszberg, D.; Kieda, D. B.; Kleiner, T.; Kluge, G.; Kobayashi, Y.; Kohri, K.; Komin, N.; Kornecki, P.; Kosack, K.; Kowal, G.; Kubo, H.; Kushida, J.; La Barbera, A.; La Palombara, N.; Lainez, M.; Lamastra, A.; Lapington, J.; Laporte, P.; Lazarevic, S.; Lazendic-Galloway, J.; Lemoine-Goumard, M.; Lenain, J. -P.; Leone, F.; Leonora, E.; Leto, G.; Lindfors, E.; Linhoff, M.; Liodakis, I.; Lipniacka, A.; Lombardi, S.; Longo, F.; Lopez-Coto, R.; Lopez-Moya, M.; Lopez-Oramas, A.; Loporchio, S.; Lozano Bahilo, J.; Luque-Escamilla, P. L.; Macias, O.; Majumdar, P.; Mallamaci, M.; Malyshev, D.; Mandat, D.; Manico, G.; Mariotti, M.; Marquez, I.; Marquez, P.; Marsella, G.; Marti, J.; Martinez, G. A.; Martinez, M.; Martinez, O.; Marty, C.; Mas-Aguilar, A.; Mastropietro, M.; Mazin, D.; Menchiari, S.; Mestre, E.; Meunier, J. -L.; Meyer, D. M. -A.; Meyer, M.; Miceli, D.; Miceli, M.; Michailidis, M.; Michalowski, J.; Miener, T.; Miranda, J. M.; Mitchell, A.; Mizote, M.; Mizuno, T.; Moderski, R.; Molero, M.; Molfese, C.; Molina, E.; Montaruli, T.; Moralejo, A.; Morcuende, D.; Morselli, A.; Moulin, E.; Moya Zamanillo, V.; Munari, K.; Murach, T.; Muraczewski, A.; Muraishi, H.; Nakamori, T.; Nayak, A.; Nemmen, R.; Neto, J. P.; Nickel, L.; Niemiec, J.; Nieto, D.; Nievas Rosillo, M.; Nikolajuk, M.; Nikolic, L.; Nishijima, K.; Noda, K.; Nosek, D.; Novotny, V.; Nozaki, S.; Ohishi, M.; Ohtani, Y.; Okumura, A.; Olive, J. -F.; Ong, R. A.; Orienti, M.; Orito, R.; Orlandini, M.; Orlando, E.; Orlando, S.; Ostrowski, M.; Otero-Santos, J.; Oya, I.; Pagano, I.; Pagliaro, A.; Palatiello, M.; Panebianco, G.; Paneque, D.; Pantaleo, F. R.; Paredes, J. M.; Parmiggiani, N.; Patricelli, B.; Pe'er, A.; Pech, M.; Pecimotika, M.; Pensec, U.; Peresano, M.; Perez-Romero, J.; Persic, M.; Peters, K. P.; Petruk, O.; Piano, G.; Pierre, E.; Pietropaolo, E.; Pihet, M.; Pinchbeck, L.; Pirola, G.; Pittori, C.; Plard, C.; Podobnik, F.; Pohl, M.; Pollet, V.; Ponti, G.; Prandini, E.; Principe, G.; Priyadarshi, C.; Produit, N.; Prouza, M.; Pueschel, E.; Puehlhofer, G.; Pumo, M. L.; Queiroz, F.; Quirrenbach, A.; Raino, S.; Rando, R.; Razzaque, S.; Regeard, M.; Reimer, A.; Reimer, O.; Reisenegger, A.; Rhode, W.; Ribeiro, D.; Ribo, M.; Ricci, C.; Richtler, T.; Rico, J.; Rieger, F.; Riitano, L.; Rizi, V.; Roache, E.; Fernandez, G. Rodriguez; Rodriguez Frias, M. D.; Rodriguez-Vazquez, J. J.; Romano, P.; Romeo, G.; Rosado, J.; de Leon, A. Rosales; Rowell, G.; Rudak, B.; Ruiter, A. J.; Rulten, C. B.; Sadeh, I.; Saha, L.; Saito, T.; Salzmann, H.; Sanchez-Conde, M.; Sandaker, H.; Sangiorgi, P.; Sano, H.; Santander, M.; Santos-Lima, R.; Sapienza, V.; Saric, T.; Sarkar, A.; Sarkar, S.; Saturni, F. G.; Savarese, S.; Scherer, A.; Schiavone, F.; Schipani, P.; Schleicher, B.; Schovanek, P.; Schubert, J. L.; Schwanke, U.; Seglar Arroyo, M.; Seitenzahl, I. R.; Sergijenko, O.; Servillat, M.; Siegert, T.; Siejkowski, H.; Siqueira, C.; Sliusar, V.; Slowikowska, A.; Sol, H.; Spencer, S. T.; Spiga, D.; Stamerra, A.; Stanic, S.; Starecki, T.; Starling, R.; Stawarz, L.; Steppa, C.; Hatlen, E. Saether; Stolarczyk, T.; Striskovic, J.; Suda, Y.; Swierk, P.; Tajima, H.; Tak, D.; Takahashi, M.; Takeishi, R.; Tavernier, T.; Tejedor, L. A.; Terauchi, K.; Teshima, M.; Testa, V.; Tian, W. W.; Tibaldo, L.; Tibolla, O.; Todero Peixoto, C. J.; Torradeflot, F.; Torres, D. F.; Tosti, G.; Tothill, N.; Toussenel, F.; Tramacere, A.; Travnicek, P.; Tripodo, G.; Trois, A.; Truzzi, S.; Tutone, A.; Vaclavek, L.; Vacula, M.; Vallania, P.; Valles, R.; van Eldik, C.; van Scherpenberg, J.; Vandenbroucke, J.; Vassiliev, V.; Vazquez Acosta, M.; Vecchi, M.; Ventura, S.; Vercellone, S.; Verna, G.; Viana, A.; Viaux, N.; Vigliano, A.; Vignatti, J.; Vigorito, C. F.; Villanueva, J.; Visentin, E.; Vitale, V.; Vodeb, V.; Voisin, V.; Voitsekhovskyi, V.; Vorobiov, S.; Voutsinas, G.; Vovk, I.; Vuillaume, T.; Wagner, S. J.; Walter, R.; White, M.; White, R.; Wierzcholska, A.; Will, M.; Williams, D. A.; Wohlleben, F.; Wolter, A.; Yamamoto, T.; Yang, L.; Yoshida, T.; Yoshikoshi, T.; Zaharijas, G.; Zampieri, L.; Sanchez, R. Zanmar; Zavrtanik, D.; Zavrtanik, M.; Zdziarski, A. A.; Zech, A.; Zhang, W.; Zhdanov, V. I.; Zietara, K.; Zivec, M.; Zuriaga-Puig, J.
    Monochromatic gamma-ray signals constitute a potential smoking gun signature for annihilating or decaying dark matter particles that could relatively easily be distinguished from astrophysical or instrumental backgrounds. We provide an updated assessment of the sensitivity of the Cherenkov Telescope Array (CTA) to such signals, based on observations of the Galactic centre region as well as of selected dwarf spheroidal galaxies. We find that current limits and detection prospects for dark matter masses above 300 GeV will be significantly improved, by up to an order of magnitude in the multi-TeV range. This demonstrates that CTA will set a new standard for gamma-ray astronomy also in this respect, as the world's largest and most sensitive high-energy gamma-ray observatory, in particular due to its exquisite energy resolution at TeV energies and the adopted observational strategy focussing on regions with large dark matter densities. Throughout our analysis, we use up-to-date instrument response functions, and we thoroughly model the effect of instrumental systematic uncertainties in our statistical treatment. We further present results for other potential signatures with sharp spectral features, e.g. box-shaped spectra, that would likewise very clearly point to a particle dark matter origin.
  • Thumbnail Image
    Item
    The galactic globular cluster M5 (NGC 5904) as a particle physics laboratory
    (2013) Viaux, N.; Catelan, Marcio; Raffelt, G. G.; Redondo, J.; Valcarce, A. A. R.
    Globular clusters have been used for a long time to test stellar evolution theories, and in particular to constrain novel forms of energy loss in low-mass stars. This includes constraints on axion properties, neutrino dipole moments, milli-charged particles, Kaluza-Klein gravitons, and many other phenomena. Depending on their interaction strength, these particles can be abundantly produced in stellar interiors, escape without further interaction, and thus drain energy directly from the stellar interior. Hence, they contribute directly to the stellar energy losses, thus modifying stellar evolution. Our goal is to re-examine such constraints in the light of modern data and updated stellar evolution codes, paying particular attention to systematic and statistical errors. As a first example, we consider the case of a neutrino magnetic moment that enhances the energy loss from the plasma process. In terms of the observed color-magnitude diagrams, the tip of the red giant branch (RGB) has been identified as a sensitive observable of the effects of the energy losses due to a neutrino magnetic moment. Here we describe the consequences of adding the cooling effect due to a neutrino magnetic moment to the Princeton-Goddard-PUC (PGPUC) stellar evolution code, exploring in particular the dependence of the position of the RGB tip on the neutrino magnetic moment. As a first application, we studied the position of the observed RGB tip in the case of the Galactic globular cluster M5 (NGC 5904), using the latest, high-precision, ground-based data from the P. B. Stetson database (2012, priv. comm.). We compare the empirical results with the PGPUC model predictions, and discuss the implied constraints on the value of the neutrino magnetic moment....