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An Indication of Anisotropy in Arrival Directions of Ultra-high-energy Cosmic Rays through Comparison to the Flux Pattern of Extragalactic Gamma-Ray Sources [PDF]

, 2018
A new analysis of the data set from the Pierre Auger Observatory provides evidence for anisotropy in the arrival directions of ultra-high-energy cosmic rays on an intermediate angular scale, which is indicative of excess arrivals from strong, nearby ...
T. P. A. C. A. Aab, P. Abreu, M. Aglietta, I. Albuquerque, I. Allekotte, A. Almela, J. A. Castillo, J. Álvarez-Muñiz, G. A. Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, N. Arsene, Hernán Asorey, P. Assis, G. Avila, A. Badescu, A. Bălăceanu, F. Barbato, R. Luz, J. Beatty, K. Becker, J. Bellido, C. Bérat, M. Bertaina, X. Bertou, P. Biermann, J. Biteau, S. Blaess, A. Blanco, J. Blazek, C. Bleve, M. Boh'avcov'a, C. Bonifazi, N. Borodai, A. Botti, J. Brack, I. Brancus, T. Bretz, A. Bridgeman, F. Briechle, P. Buchholz, A. Bueno, S. Buitink, M. Buscemi, K. Caballero-Mora, L. Caccianiga, A. Cancio, F. Canfora, R. Caruso, A. Castellina, F. Catalani, G. Cataldi, L. Cazon, A. Chavez, J. Chinellato, J. Chudoba, R. Clay, A. Cerutti, R. Colalillo, A. Coleman, L. Collica, M. Coluccia, R. Conceiccao, G. Consolati, F. Contreras, M. Cooper, S. Coutu, C. Covault, J. Cronin, S. D'Amico, B. Daniel, S. Dasso, K. Daumiller, B. Dawson, R. M. Almeida, S. Jong, G. D. Mauro, J. D. M. Neto, I. Mitri, J. D. Oliveira, V. Souza, J. Debatin, O. Deligny, M. L. D. Castro, F. Diogo, C. Dobrigkeit, J. D'Olivo, Q. Dorosti, R. C. Anjos, M. Dova, A. Dundović, J. Ebr, R. Engel, M. Erdmann, M. Erfani, C. Escobar, J. Espadanal, A. Etchegoyen, H. Falcke, J. Farmer, G. Farrar, A. Fauth, N. Fazzini, F. Fenu, B. Fick, J. M. Figueira, A. Filipvcivc, M. Freire, T. Fujii, A. Fuster, R. Gaior, B. Garc'ia, F. Gat'e, H. Gemmeke, A. Gherghel-Lascu, P. Ghia, U. Giaccari, M. Giammarchi, M. Giller, D. Glas, C. Glaser, G. Golup, M. G. Berisso, P. Vitale, N. Gonz'alez, A. Gorgi, A. Grillo, T. D. Grubb, F. Guarino, G. Guedes, R. Halliday, M. Hampel, P. Hansen, D. Harari, T. Harrison, A. Haungs, T. Hebbeker, D. Heck, P. Heimann, A. Hervé, G. Hill, C. Hojvat, E. Holt, P. Homola, J. Horandel, P. Horváth, M. Hrabovsk'y, T. Huege, J. Hulsman, A. Insolia, P. G. Isar, I. Jandt, J. Johnsen, M. Josebachuili, J. Juryšek, A. Kaapa, O. Kambeitz, K. Kampert, B. Keilhauer, N. Kemmerich, E. Kemp, J. Kemp, R. Kieckhafer, H. Klages, M. Kleifges, J. Kleinfeller, R. Krause, N. Krohm, D. Kuempel, G. K. Mezek, N. Kunka, A. Awad, B. Lago, D. LaHurd, R. Lang, M. Lauscher, R. Legumina, M. Oliveira, A. Letessier-Selvon, I. Lhenry-Yvon, K. Link, D. L. Presti, L. Lopes, R. L'opez, A. L. Casado, R. Lorek, Q. Luce, A. Lucero, M. Malacari, M. Mallamaci, D. Mandát, P. Mantsch, A. Mariazzi, I. Marics, G. Marsella, D. Martello, H. Martinez, O. M. Bravo, J. Meza, H. Mathes, S. Mathys, J. Matthews, G. Matthiae, E. Mayotte, P. Mazur, C. Medina, G. Medina-Tanco, D. Melo, A. Menshikov, K. Merenda, S. Michal, M. Micheletti, L. Middendorf, L. Miramonti, B. Mitrica, D. Mockler, S. Mollerach, F. Montanet, C. Morello, G. Morlino, M. Mostaf'a, A. Muller, G. Muller, M. Muller, S. Muller, R. Mussa, I. Naranjo, L. Nellen, P. Nguyen, M. Niculescu-Oglinzanu, M. Niechciol, L. Niemietz, T. Niggemann, D. Nitz, D. Nosek, V. Novotny, L. Novzka, L. N'unez, F. Oikonomou, A. Olinto, M. Palatka, J. Pallotta, P. Papenbreer, G. Parente, A. Parra, T. Paul, M. Pech, F. Pedreira, J. Pkekala, R. Pelayo, J. Peña-Rodríguez, L. Pereira, M. Perlin, L. Perrone, C. Peters, S. Petrera, J. Phuntsok, T. Pierog, M. Pimenta, V. Pirronello, M. Platino, M. Plum, J. Poh, C. Porowski, R. Prado, P. Privitera, M. Prouza, E. Quel, S. Querchfeld, S. Quinn, R. Ramos-Pollán, J. Rautenberg, D. Ravignani, J. Řídký, F. Riehn, M. Risse, P. Ristori, V. Rizi, W. Carvalho, G. Fernandez, J. Rojo, M. Roncoroni, M. Roth, E. Roulet, A. Rovero, P. Ruehl, S. Saffi, A. Săftoiu, F. Salamida, H. Salazar, A. Saleh, G. Salina, F. S'anchez, P. Sanchez-Lucas, E. Santos, E. Santos, F. Sarazin, R. Sarmento, C. Sarmiento-Cano, R. Sato, M. Schauer, V. Scherini, H. Schieler, M. Schimp, D. Schmidt, O. Scholten, P. Schov'anek, F. Schroder, S. Schroder, A. Schulz, J. Schumacher, S. Sciutto, A. Segreto, A. Shadkam, R. Shellard, G. Sigl, G. Silli, R. vSm'ida, G. Snow, P. Sommers, S. Sonntag, J. F. Soriano, R. Squartini, D. Stanca, S. Stanivc, J. Stasielak, P. Stassi, M. Stolpovskiy, F. Strafella, A. Streich, F. Suarez, M. S. Dur'an, T. Sudholz, T. Suomijarvi, A. Supanitsky, J. vSup'ik, J. Swain, Z. Szadkowski, A. Taboada, O. Taborda, V. M. Theodoro, C. Timmermans, C. T. Peixoto, L. Tomankova, B. Tom'e, G. T. Elipe, P. Trávníček, M. Trini, R. Ulrich, M. Unger, M. Urban, J. F. V. Galicia, I. Valiño, L. Valore, G. V. Aar, P. Bodegom, A. M. Berg, A. V. Vliet, E. Varela, B. V. C'ardenas, R. V'azquez, D. Veberivc, C. Ventura, I. D. V. Quispe, V. Verzi, J. Vícha, L. Villaseñor, S. Vorobiov, H. Wahlberg, O. Wainberg, D. Walz, A. Watson, M. Weber, A. Weindl, M. Wiede'nski, L. Wiencke, H. Wilczy'nski, M. Wirtz, D. Wittkowski, B. Wundheiler, L. Yang, A. Yushkov, E. Zas, D. Zavrtanik, M. Zavrtanik, A. Zepeda, B. Zimmermann, M. Ziolkowski, Z. Zong, F. Zuccarello   +391 more
semanticscholar   +1 more source

AGILE Detection of Gamma-Ray Sources Coincident with Cosmic Neutrino Events [PDF]

Astrophysical Journal, 2018
The origin of cosmic neutrinos is still largely unknown. Using data obtained by the gamma-ray imager on board the Astro-rivelatore Gamma a Immagini Leggero (AGILE) satellite, we systematically searched for transient gamma-ray sources above 100 MeV that ...
F. Lucarelli, F. Lucarelli, M. Tavani, G. Piano, A. Bulgarelli, I. Donnarumma, F. Verrecchia, F. Verrecchia, C. Pittori, C. Pittori, L. A. Antonelli, A. Argan, G. Barbiellini, P. Caraveo, M. Cardillo, P. Cattaneo, A. Chen, S. Colafrancesco, S. Colafrancesco, E. Costa, E. Costa, E. Monte, G. Cocco, A. Ferrari, V. Fioretti, M. Galli, P. Giommi, A. Giuliani, P. Lipari, F. Longo, S. Mereghetti, A. Morselli, F. Paoletti, N. Parmiggiani, A. Pellizzoni, P. Picozza, M. Pilia, A. Rappoldi, A. Trois, A. Ursi, S. Vercellone, V. Vittorini   +41 more
semanticscholar   +1 more source

Revision of the γ-Ray Emission from SNR CTB 109 with the Fermi Large Area Telescope

The Astrophysical Journal, 2023
CTB 109 is a middle-aged shell-type supernova remnant (SNR) with bright thermal X-ray emission. We reanalyze the GeV γ -ray emission from CTB 109 using 13 yr of Pass 8 data recorded by the Fermi Large Area Telescope.
Yuliang Xin, Qizhen Zhao, Xiaolei Guo
doaj   +1 more source

Two Candidate Pulsar TeV Halos Identified from Property-similarity Studies

The Astrophysical Journal, 2023
Teraelectronvolt halos have been suggested to be a common phenomenon associated with middle-aged pulsars. Based on our recent work on the middle-aged pulsar J0631+1036, which is the only known source positionally coincident with a hard teraelectronvolt γ
Dong Zheng, Zhongxiang Wang
doaj   +1 more source

All-sky Medium Energy Gamma-ray Observatory eXplorer mission concept [PDF]

Journal of Astronomical Telescopes Instruments and Systems, 2022
. The All-sky Medium Energy Gamma-ray Observatory eXplorer (AMEGO-X) is designed to identify and characterize gamma rays from extreme explosions and accelerators. The main science themes include supermassive black holes and their connections to neutrinos
R. Caputo, M. Ajello, C. Kierans, J. Perkins, J. Racusin, L. Baldini, M. Baring, E. Bissaldi, E. Burns, N. Cannady, E. Charles, R. D. da Silva, K. Fang, H. Fleischhack, C. Fryer, Y. Fukazawa, J. Grove, D. Hartmann, E. Howell, M. Jadhav, C. Karwin, D. Kocevski, N. Kurahashi, L. Latronico, T. Lewis, R. Leys, Amy Lien, L. Marcotulli, I. Martinez-Castellanos, M. Mazziotta, J. Mcenery, J. Metcalfe, K. Murase, M. Negro, L. Parker, B. Phlips, C. Prescod-Weinstein, S. Razzaque, P. Shawhan, Yong Sheng, T. Shutt, D. Shy, C. Sleator, A. Steinhebel, N. Striebig, Y. Suda, D. Tak, Hiroki Tajima, J. Valverde, T. Venters, Z. Wadiasingh, R. Woolf, E. Wulf, Haotong Zhang, A. Zoglauer   +54 more
semanticscholar   +1 more source

Advanced γ-Ray Emission Studies of G15.4+0.1 with Fermi-LAT: Evidence of Escaping Cosmic Rays Interacting with Surrounding Molecular Clouds

The Astrophysical Journal, 2023
We present an analysis of γ -ray emission in the direction of supernova remnant (SNR) G15.4+0.1 with 13 yr Fermi Large Area Telescope data. There are three point-like GeV sources in this region: one is spatially coincident with the TeV source HESS J1818 ...
Yuan Li, Yuliang Xin, Siming Liu, Yu He
doaj   +1 more source

CLASSIFICATION AND RANKING OF FERMI LAT GAMMA-RAY SOURCES FROM THE 3FGL CATALOG USING MACHINE LEARNING TECHNIQUES [PDF]

, 2016
We apply a number of statistical and machine learning techniques to classify and rank gamma-ray sources from the Third Fermi Large Area Telescope Source Catalog (3FGL), according to their likelihood of falling into the two major classes of gamma-ray ...
P. S. Parkinson, P. S. Parkinson, Hang Xu, P. Yu, D. Salvetti, M. Marelli, A. Falcone   +6 more
semanticscholar   +1 more source

The Third Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars

Astrophysical Journal, 2023
We present 294 pulsars found in GeV data from the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope. Another 33 millisecond pulsars (MSPs) discovered in deep radio searches of LAT sources will likely reveal pulsations once phase-connected
D. A. Smith, S. Abdollahi, M. Ajello, M. Bailes, L. Baldini, J. Ballet, M. Baring, C. Bassa, J. B. Gonzalez, R. Bellazzini, A. Berretta, B. Bhattacharyya, E. Bissaldi, R. Bonino, E. Bottacini, J. Bregeon, P. Bruel, M. Burgay, T. Burnett, R. Cameron, F. Camilo, R. Caputo, P. Caraveo, E. Cavazzuti, G. Chiaro, S. Ciprini, C. Clark, I. Cognard, A. Corongiu, P. C. Orestano, M. Crnogorčević, A. Cuoco, S. Cutini, F. D’Ammando, A. De Angelis, M. DeCesar, S. De Gaetano, R. de Menezes, J. Deneva, F. de Palma, N. Di Lalla, F. Dirirsa, L. Di Venere, A. Domínguez, D. Dumora, S. Fegan, E. Ferrara, A. Fiori, H. Fleischhack, C. Flynn, A. Franckowiak, P. Freire, Y. Fukazawa, P. Fusco, G. Galanti, V. Gammaldi, F. Gargano, D. Gasparrini, F. Giacchino, N. Giglietto, F. Giordano, M. Giroletti, D. Green, I. Grenier, L. Guillemot, S. Guiriec, M. Gustafsson, A. Harding, E. Hays, J. Hewitt, D. Horan, X. Hou, F. Jankowski, R. Johnson, T. Johnson, S. Johnston, J. Kataoka, M. Keith, M. Kerr, M. Kramer, M. Kuss, L. Latronico, S. Lee, D. Li, J. Li, B. Limyansky, F. Longo, F. Loparco, L. Lorusso, M. Lovellette, M. Lower, P. Lubrano, A. Lyne, Y. Maan, S. Maldera, R. Manchester, A. Manfreda, M. Marelli, G. Martí-Devesa, M. Mazziotta, J. Mcenery, I. Mereu, P. Michelson, M. Mickaliger, W. Mitthumsiri, T. Mizuno, A. Moiseev, M. Monzani, A. Morselli, M. Negro, R. Nemmen, L. Nieder, É. Nuss, N. Omodei, M. Orienti, E. Orlando, J. Ormes, M. Palatiello, D. Paneque, G. Panzarini, A. Parthasarathy, M. Persic, M. Pesce-Rollins, R. Pillera, H. Poon, T. Porter, A. Possenti, G. Principe, S. Rainò, R. Rando, S. Ransom, P. S. Ray, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, N. Renault-Tinacci, R. Romani, M. Sánchez-Conde, P. Parkinson, L. Scotton, D. Serini, C. Sgro’, R. Shannon, V. Sharma, Z. Shen, E. Siskind, G. Spandre, P. Spinelli, B. Stappers, T. Stephens, D. Suson, S. Tabassum, H. Tajima, D. Tak, G. Theureau, D. Thompson, O. Tibolla, D. Torres, J. Valverde, C. Venter, Z. Wadiasingh, N. Wang, N. Wang, P. Wang, P. Weltevrede, K. Wood, J. Yan, G. Zaharijas, C. Zhang, W. Zhu   +170 more
semanticscholar   +1 more source

Swift Follow-up of Reported Radio Pulsars at Fermi 4FGL Unassociated Sources

The Astrophysical Journal, 2023
Following the discovery of radio pulsars at the position of Fermi-LAT unassociated sources by the TRAPUM group, we conduct Swift-XRT observations of six of those 4FGL sources to determine if any pulsar-like X-ray sources are present and to confirm the ...
Stephen Kerby, Abraham D. Falcone, Paul S. Ray   +2 more
doaj   +1 more source

Microquasars and Gamma-ray Sources [PDF]

Chinese Journal of Astronomy and Astrophysics, 2005
Microquasars are X-ray binary systems with non-thermal radio emission originated in jet-like features. They are attractive sites for gamma-ray production, since relativistic particles in the jet should traverse locally strong both photon and matter fields.
openaire   +3 more sources