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Galaxy number-count dipole and superhorizon fluctuations

Journal of Cosmology and Astroparticle Physics IOP Publishing 2022:10 (2022) 019-019

Authors:

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

Abstract:

Abstract In view of the growing tension between the dipole anisotropy of number counts of cosmologically distant sources and of the cosmic microwave background (CMB), we investigate the number count dipole induced by primordial perturbations with wavelength comparable to or exceeding the Hubble radius today. First, we find that neither adiabatic nor isocurvature superhorizon modes can generate an intrinsic number count dipole. However a superhorizon isocurvature mode does induce a relative velocity between the CMB and the (dark) matter rest frames and thereby affects the CMB dipole. We revisit the possibility that it has an intrinsic component due to such a mode, thus enabling consistency with the galaxy number count dipole if the latter is actually kinematic in origin. Although this scenario is not particularly natural, there are possible links with other anomalies and it predicts a concommitant galaxy number count quadrupole which may be measurable in future surveys. We also investigate the number count dipole induced by modes smaller than the Hubble radius, finding that subject to CMB constraints this is too small to reconcile the dipole tension.
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Search for Astrophysical Neutrinos from 1FLE Blazars with IceCube

ASTROPHYSICAL JOURNAL 938:1 (2022) ARTN 38

Authors:

R Abbasi, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, JM Alameddine, Alves AA Jr, NM Amin, K Andeen, T Anderson, G Anton, C Arguelles, Y Ashida, S Athanasiadou, S Axani, X Bai, A Balagopal, 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 Boeser, O Botner, J Boettcher, 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 Lopez, H Dembinski, K Deoskar, A Desai, P Desiati, KD de Vries, G de Wasseige, T DeYoung, A Diaz, JC Diaz-Velez, 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 Fuerst, TK Gaisser, J Gallagher, E Ganster, A Garcia, S Garrappa, L Gerhardt, A Ghadimi, C Glaser, T Glauch, T Glusenkamp, N Goehlke, JG Gonzalez, S Goswami, D Grant, T Gregoire, S Griswold, C Gunther, 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 Huennefeld, 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 Kopke, 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, M Lincetto, A Leszczynska, 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 Maris, 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, 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 Perez 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 Schroeder, 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 Sturwald, T Stuttard, GW Sullivan, I Taboada, S Ter-Antonyan, WG Thompson, J Thwaites, S Tilav, K Tollefson, C Tonnis, 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, IceCube Collaboration
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Searching for High-energy Neutrino Emission from Galaxy Clusters with IceCube

ASTROPHYSICAL JOURNAL LETTERS 938:2 (2022) ARTN L11

Authors:

R Abbasi, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, JM Alameddine, Alves AA Jr, NM Amin, K Andeen, T Anderson, G Anton, C Arguelles, Y Ashida, S Athanasiadou, S Axani, X Bai, A Balagopal, 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 Boeser, O Botner, J Boettcher, 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, K 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 Lopez, H Dembinski, K Deoskar, A Desai, P Desiati, KD de Vries, G de Wasseige, T DeYoung, A Diaz, JC Diaz-Velez, 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 Furst, TK Gaisser, J Gallagher, E Ganster, A Garcia, S Garrappa, L Gerhardt, A Ghadimi, C Glaser, T Glauch, T Gluesenkamp, N Goehlke, JG Gonzalez, S Goswami, D Grant, T Gregoire, S Griswold, C Guenther, P Gutjahr, C Haack, A Hallgren, R Halliday, L Halve, F Halzen, H Hamdaoui, M Ha Minh, K Hanson, J Hardin, AA Harnisch, 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 Huennefeld, 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 Kopke, 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 Leszczynska, 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, IC Maris, KBM Mahn, Y Makino, S Mancina, W Marie Sainte, 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, 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 Perez 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, 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 Schroder, 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 Sturwald, T Stuttard, GW Sullivan, I Taboada, S Ter-Antonyan, WG Thompson, J Thwaites, S Tilav, K Tollefson, C Tonnis, 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, IceCube Collaboration
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Numerical metrics for complete intersection and Kreuzer–Skarke Calabi–Yau manifolds

Machine Learning: Science and Technology IOP Publishing 3:3 (2022) 35014

Authors:

Magdalena Larfors, Andre Lukas, Fabian Ruehle, Robin Schneider

Abstract:

We introduce neural networks (NNs) to compute numerical Ricci-flat Calabi–Yau (CY) metrics for complete intersection and Kreuzer–Skarke (KS) CY manifolds at any point in Kähler and complex structure moduli space, and introduce the package cymetric which provides computation realizations of these techniques. In particular, we develop and computationally realize methods for point-sampling on these manifolds. The training for the NNs is carried out subject to a custom loss function. The Kähler class is fixed by adding to the loss a component which enforces the slopes of certain line bundles to match with topological computations. Our methods are applied to various manifolds, including the quintic manifold, the bi-cubic manifold and a KS manifold with Picard number two. We show that volumes and line bundle slopes can be reliably computed from the resulting Ricci-flat metrics. We also apply our results to compute an approximate Hermitian–Yang–Mills connection on a specific line bundle on the bi-cubic.

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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
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