Prof Subir Sarkar: Publications

IceCube

IceCube at Oxford

I am a member since 2004 of the IceCube collaboration which discovered cosmic high energy neutrinos and identified some of their astrophysical sources.

IceCube @ Oxford

Multimessenger Gamma-Ray and Neutrino Coincidence Alerts using HAWC and IceCube sub-threshold Data

The Astrophysical Journal: an international review of astronomy and astronomical physics American Astronomical Society 906 (2021) 63-63

Authors:

HA Ayala Solares, S Coutu, JJ DeLaunay, DB Fox, T Grégoire, A Keivani, F Krauß, M Mostafá, K Murase, CF Turley, A Albert, R Alfaro, C Alvarez, JR Angeles Camacho, JC Arteaga-Velázquez, KP Arunbabu, D Avila Rojas, E Belmont-Moreno, C Brisbois, KS Caballero-Mora, A Carramiñana, S Casanova, U Cotti, E De la Fuente, R Diaz Hernandez, BL Dingus, MA DuVernois, M Durocher, JC Díaz-Vélez, C Espinoza, KL Fan, H Fleischhack, N Fraija, A Galván-Gámez, D Garcia, JA García-González, F Garfias, MM González, JA Goodman, JP Harding, B Hona, D Huang, F Hueyotl-Zahuantitla, PH untemeyer, A Iriarte, A Jardin-Blicq, V Joshi, H León Vargas, JT Linnemann, AL Longinotti, G Luis-Raya, J Lundeen, K Malone, O Martinez, I Martinez-Castellanos, J Martínez-Castro, JA Matthews, P Miranda-Romagnoli, E Moreno, L Nellen, M Newbold, MU Nisa, R Noriega-Papaqui, A Peisker, EG Pérez-Pérez, CD Rho, D Rosa-González, H Salazar, F Salesa Greus, A Sandoval, AJ Smith, RW Springer, K Tollefson, I Torres, R Torres-Escobedo, F Ureña-Mena, L Villaseñor, T Weisgarber, E Willox, A Zepeda, H Zhou, C de León, MG Aartsen, R Abbasi, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, C Alispach, NM Amin, K Andeen, T Anderson, I Ansseau, G Anton, C Argü elles, J Auffenberg, S Axani, H Bagherpour, X Bai, A Balagopal V, A Barbano, SW Barwick, B Bastian, V Basu, V Baum, S Baur, R Bay, JJ Beatty, K-H Becker, J Becker Tjus, S BenZvi, D Berley, E Bernardini, DZ Besson, G Binder, D Bindig, E Blaufuss, S Blot, C Bohm, SB öser, O Botner, JB öttcher, E Bourbeau, J Bourbeau, F Bradascio, J Braun, S Bron, J Brostean-Kaiser, A Burgman, J Buscher, RS Busse, T Carver, C Chen, E Cheung, D Chirkin, S Choi, BA Clark, K Clark, L Classen, A Coleman, GH Collin, JM Conrad, P Coppin, P Correa, DF Cowen, R Cross, P Dave, C De Clercq, H Dembinski, K Deoskar, S De Ridder, A Desai, P Desiati, KD de Vries, G de Wasseige, M de With, T DeYoung, S Dharani, A Diaz, H Dujmovic, M Dunkman, E Dvorak, T Ehrhardt, P Eller, R Engel, PA Evenson, S Fahey, AR Fazely, J Felde, A Fienberg, K Filimonov, C Finley, A Franckowiak, E Friedman, A Fritz, TK Gaisser, J Gallagher, E Ganster, S Garrappa, L Gerhardt, T Glauch, T Gl üsenkamp, A Goldschmidt, JG Gonzalez, D Grant, Z Griffith, S Griswold, MG ünder, MG ünd üz, C Haack, A Hallgren, R Halliday, L Halve, F Halzen, K Hanson, J Hardin, A Haungs, S Hauser, D Hebecker, D Heereman, P Heix, K Helbing, R Hellauer, F Henningsen, S Hickford, J Hignight, C Hill, GC Hill, KD Hoffman, R Hoffmann, T Hoinka, B Hokanson-Fasig, K Hoshina, F Huang, M Huber, T Huber, K Hultqvist, MH ünnefeld, R Hussain, S In, N Iovine, A Ishihara, M Jansson, GS Japaridze, M Jeong, BJP Jones, F Jonske, R Joppe, D Kang, W Kang, A Kappes, D Kappesser, T Karg, M Karl, A Karle, U Katz, M Kauer, M Kellermann, JL Kelley, A Kheirandish, J Kim, K Kin, T Kintscher, J Kiryluk, T Kittler, SR Klein, R Koirala, H Kolanoski, LK öpke, C Kopper, S Kopper, DJ Koskinen, P Koundal, M Kowalski, K Krings, G Krückl, N Kulacz, N Kurahashi, A Kyriacou, JL Lanfranchi, MJ Larson, F Lauber, JP Lazar, K Leonard, A Leszczyńska, Y Li, QR Liu, E Lohfink, CJ Lozano Mariscal, L Lu, F Lucarelli, A Ludwig, JL ünemann, W Luszczak, Y Lyu, WY Ma, J Madsen, G Maggi, KBM Mahn, Y Makino, P Mallik, S Mancina, IC Mariş, R Maruyama, K Mase, R Maunu, F McNally, K Meagher, M Medici, A Medina, M Meier, S Meighen-Berger, J Merz, T Meures, J Micallef, D Mockler, G Momenté, T Montaruli, RW Moore, R Morse, M Moulai, P Muth, R Nagai, U Naumann, G Neer, LV Nguyen, H Niederhausen, SC Nowicki, DR Nygren, A Obertacke Pollmann, M Oehler, A Olivas, A O'Murchadha, E O'Sullivan, H Pandya, DV Pankova, N Park, GK Parker, EN Paudel, P Peiffer, C Pérez de los Heros, S Philippen, D Pieloth, S Pieper, E Pinat, A Pizzuto, M Plum, Y Popovych, A Porcelli, M Prado Rodriguez, PB Price, GT Przybylski, C Raab, A Raissi, M Rameez, L Rauch, K Rawlins, IC Rea, A Rehman, R Reimann, B Relethford, M Renschler, G Renzi, E Resconi, W Rhode, M Richman, B Riedel, S Robertson, G Roellinghoff, M Rongen, C Rott, T Ruhe, D Ryckbosch, D Rysewyk Cantu, I Safa, SE Sanchez Herrera, A Sandrock, J Sandroos, M Santander, S Sarkar, S Sarkar, K Satalecka, M Scharf, M Schaufel, H Schieler, P Schlunder, T Schmidt, A Schneider, J Schneider, FG Schr öder, L Schumacher, S Sclafani, D Seckel, S Seunarine, S Shefali, M Silva, B Smithers, R Snihur, J Soedingrekso, D Soldin, M Song, GM Spiczak, C Spiering, J Stachurska, M Stamatikos, T Stanev, R Stein, J Stettner, A Steuer, T Stezelberger, RG Stokstad, NL Strotjohann, T Stürwald, T Stuttard, GW Sullivan, I Taboada, F Tenholt, S Ter-Antonyan, A Terliuk, S Tilav, L Tomankova, CT önnis, S Toscano, D Tosi, A Trettin, M Tselengidou, CF Tung, A Turcati, R Turcotte, B Ty, E Unger, MA Unland Elorrieta, M Usner, J Vandenbroucke, W Van Driessche, D van Eijk, N van Eijndhoven, D Vannerom, J van Santen, S Verpoest, M Vraeghe, C Walck, A Wallace, M Wallraff, TB Watson, C Weaver, A Weindl, MJ Weiss, J Weldert, C Wendt, J Werthebach, BJ Whelan, N Whitehorn, K Wiebe, CH Wiebusch, DR Williams, L Wills, M Wolf, TR Wood, K Woschnagg, G Wrede, J Wulff, XW Xu, Y Xu, JP Yanez, S Yoshida, T Yuan, Z Zhang, MZ öcklein

Abstract:

The High Altitude Water Cherenkov (HAWC) and IceCube observatories, through the Astrophysical Multimessenger Observatory Network (AMON) framework, have developed a multimessenger joint search for extragalactic astrophysical sources. This analysis looks for sources that emit both cosmic neutrinos and gamma rays that are produced in photo-hadronic or hadronic interactions. The AMON system is running continuously, receiving sub-threshold data (i.e. data that is not suited on its own to do astrophysical searches) from HAWC and IceCube, and combining them in real-time. We present here the analysis algorithm, as well as results from archival data collected between June 2015 and August 2018, with a total live-time of 3.0 years. During this period we found two coincident events that have a false alarm rate (FAR) of $<1$ coincidence per year, consistent with the background expectations. The real-time implementation of the analysis in the AMON system began on November 20th, 2019, and issues alerts to the community through the Gamma-ray Coordinates Network with a FAR threshold of $<4$ coincidences per year.

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Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Journal of Cosmology and Astroparticle Physics (2021)

Authors:

Samuel Timothy Spencer, H Abdalla, H Abe, F Acero, A Acharyya, R Adam, I Agudo, A Aguirre-Santaella, R Alfaro, J Alfaro, C Alispach, R Aloisio, R Alves Batista, L Amati, E Amato, G Ambrosi, EO Angüner, A Araudo, T Armstrong, F Arqueros, L Arrabito, K Asano, Y Ascasíbar, M Ashley, M Backes, C Balazs, M Balbo, B Balmaverde, A Baquero Larriva, V Barbosa Martins, M Barkov, L Baroncelli, U Barres de Almeida, JA Barrio, P-I Batista, J Becerra González, Y Becherini, G Beck, J Becker Tjus, R Belmont, W Benbow, E Bernardini, A Berti, M Berton, B Bertucci, V Beshley, B Bi, B Biasuzzi, A Biland, E Bissaldi, J Biteau, O Blanch, F Bocchino, C Boisson, J Bolmont, G Bonanno, L Bonneau Arbeletche, G Bonnoli, P Bordas, E Bottacini, M Böttcher, V Bozhilov, J Bregeon, A Brill, AM Brown, P Bruno, A Bruno, A Bulgarelli, M Burton, M Buscemi, A Caccianiga, R Cameron, M Capasso, M Caprai, A Caproni, R Capuzzo-Dolcetta, P Caraveo, R Carosi, A Carosi, S Casanova, E Cascone, D Cauz, K Cerny, M Cerruti, P Chadwick, S Chaty, A Chen, M Chernyakova, G Chiaro, A Chiavassa, L Chytka, V Conforti, F Conte, JL Contreras, J Coronado-Blazquez, J Cortina, A Costa, H Costantini, S Covino, P Cristofari, O Cuevas, F D’Ammando, MK Daniel, J Davies, F Dazzi, A De Angelis, M de Bony de Lavergne, V De Caprio, R de Cássia dos Anjos, EM de Gouveia Dal Pino, B De Lotto, D De Martino, M de Naurois, E de O na Wilhelmi, F De Palma, V de Souza, C Delgado, R Della Ceca, D della Volpe, D Depaoli, T Di Girolamo, F Di Pierro, C Díaz, C Díaz-Bahamondes, S Diebold, A Djannati-Ataï, A Dmytriiev, A Domínguez, A Donini, D Dorner, M Doro, J Dournaux, VV Dwarkadas, J Ebr, C Eckner, S Einecke, TRN Ekoume, D Elsässer, G Emery, C Evoli, M Fairbairn, D Falceta-Goncalves, S Fegan, Q Feng, G Ferrand, E Fiandrini, A Fiasson, V Fioretti, L Foffano, MV Fonseca, L Font, G Fontaine, FJ Franco, L Freixas Coromina, S Fukami, Y Fukazawa, Y Fukui, D Gaggero, G Galanti, V Gammaldi, E Garcia, M Garczarczyk, D Gascon, M Gaug, A Gent, A Ghalumyan, G Ghirlanda, F Gianotti, M Giarrusso, G Giavitto, N Giglietto, F Giordano, J Glicenstein, P Goldoni, JM González, K Gourgouliatos, T Grabarczyk, P Grandi, J Granot, D Grasso, J Green, J Grube, O Gueta, S Gunji, A Halim, M Harvey, T Hassan Collado, K Hayashi, M Heller, S Hernández Cadena, O Hervet, J Hinton, N Hiroshima, B Hnatyk, R Hnatyk, D Hoffmann, W Hofmann, J Holder, D Horan, J Hörandel, P Horvath, T Hovatta, M Hrabovsky, D Hrupec, G Hughes, M Hütten, M Iarlori, T Inada, S Inoue, A Insolia, M Ionica, M Iori, M Jacquemont, M Jamrozy, P Janecek, I Jiménez Martínez, W Jin, I Jung-Richardt, J Jurysek, P Kaaret, V Karas, S Karkar, N Kawanaka, D Kerszberg, B Khélifi, R Kissmann, J Knödlseder, Y Kobayashi, K Kohri, N Komin, A Kong, K Kosack, H Kubo, N La Palombara, G Lamanna, RG Lang, J Lapington, P Laporte, J Lefaucheur, M Lemoine-Goumard, J Lenain, F Leone, G Leto, F Leuschner, E Lindfors, S Lloyd, T Lohse, S Lombardi, F Longo, A Lopez, M López, R López-Coto, S Loporchio, F Lucarelli, PL Luque-Escamilla, E Lyard, C Maggio, A Majczyna, M Makariev, M Mallamaci, D Mandat, G Maneva, M Manganaro, G Manicò, A Marcowith, M Marculewicz, S Markoff, P Marquez, J Martí, O Martinez, M Martínez, G Martínez, H Martínez-Huerta, G Maurin, D Mazin, JD Mbarubucyeye, D Medina Miranda, M Meyer, S Micanovic, T Miener, M Minev, JM Miranda, A Mitchell, T Mizuno, B Mode, R Moderski, L Mohrmann, E Molina, T Montaruli, A Moralejo, J Morales Merino, D Morcuende-Parrilla, A Morselli, R Mukherjee, C Mundell, T Murach, H Muraishi, A Nagai, T Nakamori, R Nemmen, J Niemiec, D Nieto, M Nievas, M Nikolajuk, K Nishijima, K Noda, D Nosek, S Nozaki, P O’Brien, Y Ohira, M Ohishi, T Oka, RA Ong, M Orienti, R Orito, M Orlandini, E Orlando, JP Osborne, M Ostrowski, I Oya, A Pagliaro, M Palatka, D Paneque, FR Pantaleo, JM Paredes, N Parmiggiani, B Patricelli, L Pavletić, A Pe’er, M Pech, M Pecimotika, M Peresano, M Persic, O Petruk, K Pfrang, P Piatteli, E Pietropaolo, R Pillera, B Pilszyk, D Pimentel, F Pintore, S Pita, M Pohl, V Poireau, M Polo, RR Prado, J Prast, G Principe, N Produit, H Prokoph, M Prouza, H Przybilski, E Pueschel, G Pühlhofer, ML Pumo, M Punch, F Queiroz, A Quirrenbach, R Rando, S Razzaque, E Rebert, S Recchia, P Reichherzer, O Reimer, A Reimer, Y Renier, T Reposeur, W Rhode, D Ribeiro, M Ribó, T Richtler, J Rico, F Rieger, V Rizi, J Rodriguez, G Rodriguez Fernandez, JC Rodriguez Ramirez, JJ Rodríguez Vázquez, P Romano, G Romeo, M Roncadelli, J Rosado, A Rosales de Leon, G Rowell, B Rudak, W Rujopakarn, F Russo, I Sadeh, L Saha, T Saito, F Salesa Greus, D Sanchez, M Sánchez-Conde, P Sangiorgi, H Sano, M Santander, EM Santos, A Sanuy, S Sarkar, FG Saturni, U Sawangwit, A Scherer, B Schleicher, P Schovanek, F Schussler, U Schwanke, E Sciacca, S Scuderi, M Seglar Arroyo, O Sergijenko, M Servillat, K Seweryn, A Shalchi, P Sharma, RC Shellard, H Siejkowski, A Sinha, V Sliusar, A Slowikowska, A Sokolenko, H Sol, A Specovius, S Spencer, D Spiga, A Stamerra, S Stanič, R Starling, T Stolarczyk, U Straumann, J Strišković, Y Suda, P ´Swierk, G Tagliaferri, H Takahashi, M Takahashi, F Tavecchio, L Taylor, LA Tejedor, P Temnikov, R Terrier, T Terzic, V Testa, W Tian, L Tibaldo, D Tonev, DF Torres, E Torresi, L Tosti, N Tothill, G Tovmassian, P Travnicek, S Truzzi, F Tuossenel, G Umana, M Vacula, V Vagelli, M Valentino, B Vallage, P Vallania, C van Eldik, GS Varner, V Vassiliev, M Vázquez Acosta, M Vecchi, J Veh, S Vercellone, S Vergani, V Verguilov, GP Vettolani, A Viana, CF Vigorito, V Vitale, S Vorobiov, I Vovk, T Vuillaume, SJ Wagner, R Walter, J Watson, M White, R White, R Wiemann, A Wierzcholska, M Will, DA Williams, R Wischnewski, A Wolter, R Yamazaki, S Yanagita, L Yang, T Yoshikoshi, M Zacharias, G Zaharijas, D Zaric, M Zavrtanik, D Zavrtanik, AA Zdziarski, A Zech, H Zechlin, VI Zhdanov, M \vZivec

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Explaining cosmic ray antimatter with secondaries from old supernova remnants

(2020)

Authors:

Philipp Mertsch, Andrea Vittino, Subir Sarkar

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Blast from the past: Constraints on the dark sector from the BEBC WA66 beam dump experiment

(2020)

Authors:

Giacomo Marocco, Subir Sarkar

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Cosmic Ray Spectrum from 250 TeV to 10 PeV using IceTop

Physical Review D: Particles, Fields, Gravitation and Cosmology American Physical Society 102 (2020) 122001

Abstract:

We report here an extension of the measurement of the all-particle cosmic-ray spectrum with IceTop to lower energy. The new measurement gives full coverage of the knee region of the spectrum and reduces the gap in energy between previous IceTop and direct measurements. With a new trigger that selects events in closely spaced detectors in the center of the array, the IceTop energy threshold is lowered by almost an order of magnitude below its previous threshold of 2 PeV. In this paper, we explain how the new trigger is implemented, and we describe the new machine-learning method developed to deal with events with very few detectors hit. We compare the results with previous measurements by IceTop and others that overlap at higher energy and with HAWC and Tibet in the 100 TeV range.

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Prof Subir Sarkar

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IceCube

IceCube at Oxford

Multimessenger Gamma-Ray and Neutrino Coincidence Alerts using HAWC and IceCube sub-threshold Data

Authors:

Abstract:

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Authors:

Explaining cosmic ray antimatter with secondaries from old supernova remnants

Authors:

Blast from the past: Constraints on the dark sector from the BEBC WA66 beam dump experiment

Authors:

Cosmic Ray Spectrum from 250 TeV to 10 PeV using IceTop

Abstract:

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Prof Subir Sarkar

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IceCube

IceCube at Oxford

Multimessenger Gamma-Ray and Neutrino Coincidence Alerts using HAWC and IceCube sub-threshold Data

Authors:

Abstract:

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Authors:

Explaining cosmic ray antimatter with secondaries from old supernova remnants

Authors:

Blast from the past: Constraints on the dark sector from the BEBC WA66 beam dump experiment

Authors:

Cosmic Ray Spectrum from 250 TeV to 10 PeV using IceTop

Abstract: