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

Blast from the past II: Constraints on heavy neutral leptons from the BEBC WA66 beam dump experiment

(2022)

Authors:

Ryan Barouki, Giacomo Marocco, Subir Sarkar

Search for neutrino emission from cores of active galactic nuclei

Physical Review D 106:2 (2022)

Authors:

R Abbasi, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, JM Alameddine, C Alispach, AA Alves, NM Amin, K Andeen, T Anderson, G Anton, C Arguelles, Y Ashida, S Axani, X Bai, A Balagopal V, A Barbano, SW Barwick, B Bastian, V Basu, S Baur, R Bay, JJ Beatty, KH Becker, J Becker Tjus, C Bellenghi, S Benzvi, D Berley, E Bernardini, DZ Besson, G Binder, D Bindig, E Blaufuss, S Blot, M Boddenberg, F Bontempo, J Borowka, S Boser, O Botner, J Bottcher, E Bourbeau, F Bradascio, J Braun, B Brinson, S Bron, J Brostean-Kaiser, S Browne, A Burgman, RT Burley, RS Busse, MA Campana, EG Carnie-Bronca, C Chen, Z Chen, D Chirkin, K Choi, BA Clark, K Clark, L Classen, A Coleman, GH Collin, JM Conrad, P Coppin, P Correa, DF Cowen, R Cross, C Dappen, P Dave, C De Clercq, JJ Delaunay, D Delgado López, H Dembinski, K Deoskar, A Desai, P Desiati, KD De Vries, G De Wasseige, M De With, T Deyoung, A Diaz, JC Diaz-Velez, M Dittmer, H Dujmovic, M Dunkman, MA Duvernois, E Dvorak, T Ehrhardt, P Eller, R Engel, H Erpenbeck, J Evans, PA Evenson, KL Fan, AR Fazely, A Fedynitch, N Feigl, S Fiedlschuster, AT Fienberg

Abstract:

The sources of the majority of the high-energy astrophysical neutrinos observed with the IceCube neutrino telescope at the South Pole are unknown. So far, only a flaring gamma-ray blazar was compellingly associated with the emission of high-energy neutrinos. However, several studies suggest that the neutrino emission from the gamma-ray blazar population only accounts for a small fraction of the total astrophysical neutrino flux. In this work we probe the production of high-energy neutrinos in the cores of active galactic nuclei (AGN), induced by accelerated cosmic rays in the accretion disk region. We present a likelihood analysis based on eight years of IceCube data, searching for a cumulative neutrino signal from three AGN samples created for this work. The neutrino emission is assumed to be proportional to the accretion disk luminosity estimated from the soft x-ray flux. Next to the observed soft x-ray flux, the objects for the three samples have been selected based on their radio emission and infrared color properties. For the largest sample in this search, an excess of high-energy neutrino events with respect to an isotropic background of atmospheric and astrophysical neutrinos is found, corresponding to a post-trial significance of 2.60σ. If interpreted as a genuine signal with the assumptions of a proportionality of x-ray and neutrino fluxes and a model for the subthreshold flux distribution, then this observation implies that at 100 TeV, 27%-100% of the observed neutrinos arise from particle acceleration in the core of AGN at 1σ confidence interval.

Search for Astrophysical Neutrinos from 1FLE Blazars with IceCube

(2022)

Authors:

R Abbasi, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, JM Alameddine, AA Alves, NM Amin, K Andeen, T Anderson, G Anton, C Argüelles, Y Ashida, S Athanasiadou, S Axani, X Bai, A Balagopal V., M Baricevic, SW Barwick, V Basu, R Bay, JJ Beatty, K-H Becker, J Becker Tjus, J Beise, C Bellenghi, S Benda, S BenZvi, D Berley, E Bernardini, DZ Besson, G Binder, D Bindig, E Blaufuss, S Blot, F Bontempo, JY Book, J Borowka, S Böser, O Botner, J Böttcher, E Bourbeau, F Bradascio, J Braun, B Brinson, S Bron, J Brostean-Kaiser, RT Burley, RS Busse, MA Campana, EG Carnie-Bronca, C Chen, Z Chen, D Chirkin, K Choi, BA Clark, L Classen, A Coleman, GH Collin, A Connolly, JM Conrad, P Coppin, P Correa, DF Cowen, R Cross, C Dappen, P Dave, C De Clercq, JJ DeLaunay, D Delgado López, H Dembinski, K Deoskar, A Desai, P Desiati, KD de Vries, G de Wasseige, T DeYoung, A Diaz, JC Díaz-Vélez, M Dittmer, H Dujmovic, MA DuVernois, T Ehrhardt, P Eller, R Engel, H Erpenbeck, J Evans, PA Evenson, KL Fan, AR Fazely, A Fedynitch, N Feigl, S Fiedlschuster, AT Fienberg, C Finley, L Fischer, D Fox, A Franckowiak, E Friedman, A Fritz, P Fürst, TK Gaisser, J Gallagher, E Ganster, A Garcia, S Garrappa, L Gerhardt, A Ghadimi, C Glaser, T Glauch, T Glüsenkamp, N Goehlke, JG Gonzalez, S Goswami, D Grant, T Grégoire, S Griswold, C Günther, P Gutjahr, C Haack, A Hallgren, R Halliday, L Halve, F Halzen, H Hamdaoui, M Ha Minh, K Hanson, J Hardin, AA Harnisch, P Hatch, A Haungs, K Helbing, J Hellrung, F Henningsen, EC Hettinger, L Heuermann, S Hickford, J Hignight, C Hill, GC Hill, KD Hoffman, K Hoshina, W Hou, M Huber, T Huber, K Hultqvist, M Hünnefeld, R Hussain, K Hymon, S In, N Iovine, A Ishihara, M Jansson, GS Japaridze, M Jeong, M Jin, BJP Jones, D Kang, W Kang, X Kang, A Kappes, D Kappesser, L Kardum, T Karg, M Karl, A Karle, U Katz, M Kauer, JL Kelley, A Kheirandish, K Kin, J Kiryluk, SR Klein, A Kochocki, R Koirala, H Kolanoski, T Kontrimas, L Köpke, C Kopper, S Kopper, DJ Koskinen, P Koundal, M Kovacevich, M Kowalski, T Kozynets, E Krupczak, E Kun, N Kurahashi, N Lad, C Lagunas Gualda, MJ Larson, F Lauber, JP Lazar, JW Lee, K Leonard, A Leszczyńska, M Lincetto, QR Liu, M Liubarska, E Lohfink, CJ Lozano Mariscal, L Lu, F Lucarelli, A Ludwig, W Luszczak, Y Lyu, WY Ma, J Madsen, KBM Mahn, Y Makino, S Mancina, W Marie Sainte, IC Mariş, I Martinez-Soler, R Maruyama, S McCarthy, T McElroy, F McNally, JV Mead, K Meagher, S Mechbal, A Medina, M Meier, S Meighen-Berger, Y Merckx, J Micallef, D Mockler, T Montaruli, RW Moore, R Morse, M Moulai, T Mukherjee, R Naab, R Nagai, U Naumann, J Necker, LV Nguyen, H Niederhausen, MU Nisa, SC Nowicki, A Obertacke Pollmann, M Oehler, B Oeyen, A Olivas, J Osborn, E O'Sullivan, H Pandya, DV Pankova, N Park, GK Parker, EN Paudel, L Paul, C Pérez de los Heros, L Peters, J Peterson, S Philippen, S Pieper, A Pizzuto, M Plum, Y Popovych, A Porcelli, M Prado Rodriguez, B Pries, GT Przybylski, C Raab, J Rack-Helleis, A Raissi, M Rameez, K Rawlins, IC Rea, Z Rechav, A Rehman, P Reichherzer, G Renzi, E Resconi, S Reusch, W Rhode, M Richman, B Riedel, EJ Roberts, S Robertson, S Rodan, G Roellinghoff, M Rongen, C Rott, T Ruhe, D Ryckbosch, D Rysewyk Cantu, I Safa, J Saffer, D Salazar-Gallegos, P Sampathkumar, SE Sanchez Herrera, A Sandrock, M Santander, S Sarkar, S Sarkar, K Satalecka, M Schaufel, H Schieler, S Schindler, T Schmidt, A Schneider, J Schneider, FG Schröder, L Schumacher, G Schwefer, S Sclafani, D Seckel, S Seunarine, A Sharma, S Shefali, N Shimizu, M Silva, B Skrzypek, B Smithers, R Snihur, J Soedingrekso, A Sogaard, D Soldin, C Spannfellner, GM Spiczak, C Spiering, M Stamatikos, T Stanev, R Stein, J Stettner, T Stezelberger, T Stürwald, T Stuttard, GW Sullivan, I Taboada, S Ter-Antonyan, WG Thompson, J Thwaites, S Tilav, K Tollefson, C Tönnis, S Toscano, D Tosi, A Trettin, M Tselengidou, CF Tung, A Turcati, R Turcotte, JP Twagirayezu, B Ty, MA Unland Elorrieta, M Unland Elorrieta, K Upshaw, N Valtonen-Mattila, J Vandenbroucke, N van Eijndhoven, D Vannerom, J van Santen, J Veitch-Michaelis, S Verpoest, C Walck, W Wang, TB Watson, C Weaver, P Weigel, A Weindl, J Weldert, C Wendt, J Werthebach, M Weyrauch, N Whitehorn, CH Wiebusch, N Willey, DR Williams, M Wolf, G Wrede, J Wulff, XW Xu, JP Yanez, E Yildizci, S Yoshida, S Yu, T Yuan, Z Zhang, P Zhelnin

Galaxy number-count dipole and superhorizon fluctuations

(2022)

Authors:

Guillem Domènech, Roya Mohayaee, Subodh P Patil, Subir Sarkar

Strong Constraints on Neutrino Nonstandard Interactions from TeV-Scale νμ Disappearance at IceCube

Physical Review Letters American Physical Society (APS) 129:1 (2022) 011804

Authors:

R Abbasi, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, JM Alameddine, C Alispach, AA Alves, NM Amin, K Andeen, T Anderson, G Anton, C Argüelles, Y Ashida, S Axani, X Bai, A Balagopal, A Barbano, SW Barwick, B Bastian, V Basu, S Baur, R Bay, JJ Beatty, K-H Becker, J Becker Tjus, C Bellenghi, S Benda, S BenZvi, D Berley, E Bernardini, DZ Besson, G Binder, D Bindig, E Blaufuss, S Blot, M Boddenberg, F Bontempo, J Borowka, S Böser, O Botner, J Böttcher, E Bourbeau, F Bradascio, J Braun, B Brinson, S Bron, J Brostean-Kaiser, S Browne, A Burgman, RT Burley, RS Busse, MA Campana, EG Carnie-Bronca, C Chen, Z Chen, D Chirkin, K Choi, BA Clark, K Clark, L Classen, A Coleman, GH Collin, JM Conrad, P Coppin, P Correa, DF Cowen, R Cross, C Dappen, P Dave, C De Clercq, JJ DeLaunay, D Delgado López, H Dembinski, K Deoskar, A Desai, P Desiati, KD de Vries, G de Wasseige, M de With, T DeYoung, A Diaz, JC Díaz-Vélez, M Dittmer, H Dujmovic, M Dunkman, MA DuVernois, E Dvorak, T Ehrhardt, P Eller, R Engel, H Erpenbeck, J Evans, PA Evenson, KL Fan, AR Fazely, A Fedynitch, N Feigl, S Fiedlschuster, AT Fienberg, K Filimonov, C Finley, L Fischer, D Fox, A Franckowiak, E Friedman, A Fritz, P Fürst, TK Gaisser, J Gallagher, E Ganster, A Garcia, S Garrappa, L Gerhardt, A Ghadimi, C Glaser, T Glauch, T Glüsenkamp, JG Gonzalez, S Goswami, D Grant, T Grégoire, S Griswold, C Günther, P Gutjahr, C Haack, A Hallgren, R Halliday, L Halve, F Halzen, M Ha Minh, K Hanson, J Hardin, AA Harnisch, A Haungs, D Hebecker, K Helbing, F Henningsen, EC Hettinger, S Hickford, J Hignight, C Hill, GC Hill, KD Hoffman, R Hoffmann, K Hoshina, F Huang, M Huber, T Huber, K Hultqvist, M Hünnefeld, R Hussain, K Hymon, S In, N Iovine, A Ishihara, M Jansson, GS Japaridze, M Jeong, M Jin, BJP Jones, D Kang, W Kang, X Kang, A Kappes, D Kappesser, L Kardum, T Karg, M Karl, A Karle, U Katz, M Kauer, M Kellermann, JL Kelley, A Kheirandish, K Kin, T Kintscher, J Kiryluk, SR Klein, R Koirala, H Kolanoski, T Kontrimas, L Köpke, C Kopper, S Kopper, DJ Koskinen, P Koundal, M Kovacevich, M Kowalski, T Kozynets, E Kun, N Kurahashi, N Lad, C Lagunas Gualda, JL Lanfranchi, MJ Larson, F Lauber, JP Lazar, JW Lee, K Leonard, A Leszczyńska, Y Li, M Lincetto, QR Liu, M Liubarska, E Lohfink, CJ Lozano Mariscal, L Lu, F Lucarelli, A Ludwig, W Luszczak, Y Lyu, W Y., J Madsen, KBM Mahn, Y Makino, S Mancina, IC Mariş, I Martinez-Soler, R Maruyama, S McCarthy, T McElroy, F McNally, JV Mead, K Meagher, S Mechbal, A Medina, M Meier, S Meighen-Berger, J Micallef, D Mockler, T Montaruli, RW Moore, R Morse, M Moulai, R Naab, R Nagai, U Naumann, J Necker, LV Nguyễn, H Niederhausen, MU Nisa, SC Nowicki, A Obertacke Pollmann, M Oehler, B Oeyen, A Olivas, E O’Sullivan, H Pandya, DV Pankova, N Park, GK Parker, EN Paudel, L Paul, C Pérez de los Heros, L Peters, J Peterson, S Philippen, S Pieper, M Pittermann, A Pizzuto, M Plum, Y Popovych, A Porcelli, M Prado Rodriguez, PB Price, B Pries, GT Przybylski, C Raab, J Rack-Helleis, A Raissi, M Rameez, K Rawlins, IC Rea, Z Rechav, A Rehman, P Reichherzer, R Reimann, G Renzi, E Resconi, S Reusch, W Rhode, M Richman, B Riedel, EJ Roberts, S Robertson, G Roellinghoff, M Rongen, C Rott, T Ruhe, D Ryckbosch, D Rysewyk Cantu, I Safa, J Saffer, SE Sanchez Herrera, A Sandrock, M Santander, S Sarkar, S Sarkar, K Satalecka, M Schaufel, H Schieler, S Schindler, T Schmidt, A Schneider, J Schneider, FG Schröder, L Schumacher, G Schwefer, S Sclafani, D Seckel, S Seunarine, A Sharma, S Shefali, N Shimizu, M Silva, B Skrzypek, B Smithers, R Snihur, J Soedingrekso, D Soldin, C Spannfellner, GM Spiczak, C Spiering, J Stachurska, M Stamatikos, T Stanev, R Stein, J Stettner, T Stezelberger, T Stürwald, T Stuttard, GW Sullivan, I Taboada, S Ter-Antonyan, J Thwaites, S Tilav, F Tischbein, K Tollefson, C Tönnis, S Toscano, D Tosi, A Trettin, M Tselengidou, CF Tung, A Turcati, R Turcotte, CF Turley, JP Twagirayezu, B Ty, MA Unland Elorrieta, N Valtonen-Mattila, J Vandenbroucke, N van Eijndhoven, D Vannerom, J van Santen, J Veitch-Michaelis, S Verpoest, C Walck, W Wang, TB Watson, C Weaver, P Weigel, A Weindl, MJ Weiss, J Weldert, C Wendt, J Werthebach, M Weyrauch, N Whitehorn, CH Wiebusch, DR Williams, M Wolf, K Woschnagg, G Wrede, J Wulff, XW Xu, JP Yanez, E Yildizci, S Yoshida, S Yu, T Yuan, Z Zhang, P Zhelnin

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