Browsing by Author "Tramacere, A."

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.
  • No Thumbnail Available
    Item
    Multiwavelength monitoring of the nucleus in PBC?J2333.9-2343: the giant radio galaxy with a blazar-like core
    (2023) Hernandez-Garcia, L.; Panessa, F.; Bruni, G.; Bassani, L.; Arevalo, P.; Patino-Alvarez, V. M.; Tramacere, A.; Lira, P.; Sanchez-Saez, P.; Bauer, F. E.; Chavushyan, V; Carraro, R.; Forster, F.; Arancibia, A. M. Munoz; Ubertini, P.
    PBC J2333.9-2343 is a giant radio galaxy at z = 0.047 with a bright central core associated to a blazar nucleus. If the nuclear blazar jet is a new phase of the jet activity, then the small orientation angle suggests a dramatic change of the jet direction. We present observations obtained between 2018 September and 2019 January (cadence larger than three days) with Effeslberg, SMARTS-1.3m, ZTF, ATLAS, Swift, and Fermi-LAT, and between 2019 April and 2019 July (daily cadence) with SMARTS-1.3 m and ATLAS. Large (>2 x) flux increases are observed on time-scales shorter than a month, which are interpreted as flaring events. The cross correlation between the SMARTS-1.3 m monitoring in the NIR and optical shows that these data do not show significant time lag within the measured errors. A comparison of the optical variability properties between non-blazars and blazars AGN shows that PBC J2333.9-2343 has properties more comparable to the latter. The SED of the nucleus shows two peaks, that were fitted with a one-zone leptonic model. Our data and modelling show that the high energy peak is dominated by External Compton from the dusty torus with mild contribution from Inverse Compton from the jet. The derived jet angle of 3 deg is also typical of a blazar. Therefore, we confirm the presence of a blazar-like core in the centre of this giant radio galaxy, likely a Flat Spectrum Radio Quasar with peculiar properties.