Theoretical astrophysics and plasma physics at RPC

Research group

Research theme

Sub department

About

Related research groups

Fully Kinetic Shearing-box Simulations of Magnetorotational Turbulence in 2D and 3D. I. Pair Plasmas

The Astrophysical Journal American Astronomical Society 938:1 (2022) 86-86

Authors:

Fabio Bacchini, Lev Arzamasskiy, Vladimir Zhdankin, Gregory R Werner, Mitchell C Begelman, Dmitri A Uzdensky

Abstract:

Abstract The magnetorotational instability (MRI) is a fundamental mechanism determining the macroscopic dynamics of astrophysical accretion disks. In collisionless accretion flows around supermassive black holes, MRI-driven plasma turbulence cascading to microscopic (i.e., kinetic) scales can result in enhanced angular-momentum transport and redistribution, nonthermal particle acceleration, and a two-temperature state where electrons and ions are heated unequally. However, this microscopic physics cannot be captured with standard magnetohydrodynamic (MHD) approaches typically employed to study the MRI. In this work, we explore the nonlinear development of MRI turbulence in a pair plasma, employing fully kinetic particle-in-cell (PIC) simulations in two and three dimensions. First, we thoroughly study the axisymmetric MRI with 2D simulations, explaining how and why the 2D geometry produces results that differ substantially from 3D MHD expectations. We then perform the largest (to date) 3D simulations, for which we employ a novel shearing-box approach, demonstrating that 3D PIC models can reproduce the mesoscale (i.e., MHD) MRI dynamics in sufficiently large runs. With our fully kinetic simulations, we are able to describe the nonthermal particle acceleration and angular-momentum transport driven by the collisionless MRI. Since these microscopic processes ultimately lead to the emission of potentially measurable radiation in accreting plasmas, our work is of prime importance to understand current and future observations from first principles, beyond the limitations imposed by fluid (MHD) models. While in this first study we focus on pair plasmas for simplicity, our results represent an essential step toward designing more realistic electron–ion simulations, on which we will focus in future work.
More details from the publisher

Searching for High-energy Neutrino Emission from Galaxy Clusters with IceCube

The Astrophysical Journal Letters American Astronomical Society 938:2 (2022) l11

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, 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 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, 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, W Y., 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 Nguyễn, 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, 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, IceCube Collaboration
More details from the publisher
More details

Validating and optimizing mismatch tolerance of Doppler backscattering measurements with the beam model (invited)

Review of Scientific Instruments AIP Publishing 93:10 (2022) 103536

Authors:

VH Hall-Chen, J Damba, FI Parra, QT Pratt, CA Michael, S Peng, TL Rhodes, NA Crocker, JC Hillesheim, R Hong, S Ni, WA Peebles, CE Png, J Ruiz Ruiz
More details from the publisher
More details
More details

The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products★

Astronomy & Astrophysics EDP Sciences 666 (2022) a120

Authors:

G Gilmore, S Randich, CC Worley, A Hourihane, A Gonneau, GG Sacco, JR Lewis, L Magrini, P François, RD Jeffries, SE Koposov, A Bragaglia, EJ Alfaro, C Allende Prieto, R Blomme, AJ Korn, AC Lanzafame, E Pancino, A Recio-Blanco, R Smiljanic, S Van Eck, T Zwitter, T Bensby, E Flaccomio, MJ Irwin, E Franciosini, L Morbidelli, F Damiani, R Bonito, ED Friel, JS Vink, L Prisinzano, U Abbas, D Hatzidimitriou, EV Held, C Jordi, E Paunzen, A Spagna, RJ Jackson, J Maíz Apellániz, M Asplund, P Bonifacio, S Feltzing, J Binney, J Drew, AMN Ferguson, G Micela, I Negueruela, T Prusti, H-W Rix, A Vallenari, M Bergemann, AR Casey, P de Laverny, A Frasca, V Hill, K Lind, L Sbordone, SG Sousa, V Adibekyan, E Caffau, S Daflon, DK Feuillet, M Gebran, JI Gonzalez Hernandez, G Guiglion, A Herrero, A Lobel, T Merle, Š Mikolaitis, D Montes, T Morel, G Ruchti, C Soubiran, HM Tabernero, G Tautvaišienė, G Traven, M Valentini, M Van der Swaelmen, S Villanova, C Viscasillas Vázquez, A Bayo, K Biazzo, G Carraro, B Edvardsson, U Heiter, P Jofré, G Marconi, C Martayan, T Masseron, L Monaco, NA Walton, S Zaggia, V Aguirre Børsen-Koch, J Alves, L Balaguer-Nunez, PS Barklem, D Barrado, M Bellazzini, SR Berlanas, AS Binks, A Bressan, R Capuzzo-Dolcetta, L Casagrande, L Casamiquela, RS Collins, V D'Orazi, MLL Dantas, VP Debattista, E Delgado-Mena, P Di Marcantonio, A Drazdauskas, NW Evans, B Famaey, M Franchini, Y Frémat, X Fu, D Geisler, O Gerhard, EA González Solares, EK Grebel, ML Gutiérrez Albarrán, F Jiménez-Esteban, H Jönsson, T Khachaturyants, G Kordopatis, J Kos, N Lagarde, H-G Ludwig, L Mahy, M Mapelli, E Marfil, SL Martell, S Messina, A Miglio, I Minchev, A Moitinho, J Montalban, MJPFG Monteiro, C Morossi, N Mowlavi, A Mucciarelli, DNA Murphy, N Nardetto, S Ortolani, F Paletou, J Palouš, JC Pickering, A Quirrenbach, P Re Fiorentin, JI Read, D Romano, N Ryde, N Sanna, W Santos, GM Seabroke, L Spina, M Steinmetz, E Stonkuté, E Sutorius, F Thévenin, M Tosi, M Tsantaki, N Wright, RFG Wyse, M Zoccali, J Zorec, DB Zucker
More details from the publisher
More details

The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy★★★

Astronomy & Astrophysics EDP Sciences 666 (2022) a121

Authors:

S Randich, G Gilmore, L Magrini, GG Sacco, RJ Jackson, RD Jeffries, CC Worley, A Hourihane, A Gonneau, C Viscasillas Vazquez, E Franciosini, JR Lewis, EJ Alfaro, C Allende Prieto, T Bensby, R Blomme, A Bragaglia, E Flaccomio, P François, MJ Irwin, SE Koposov, AJ Korn, AC Lanzafame, E Pancino, A Recio-Blanco, R Smiljanic, S Van Eck, T Zwitter, M Asplund, P Bonifacio, S Feltzing, J Binney, J Drew, AMN Ferguson, G Micela, I Negueruela, T Prusti, H-W Rix, A Vallenari, A Bayo, M Bergemann, K Biazzo, G Carraro, AR Casey, F Damiani, A Frasca, U Heiter, V Hill, P Jofré, P de Laverny, K Lind, G Marconi, C Martayan, T Masseron, L Monaco, L Morbidelli, L Prisinzano, L Sbordone, SG Sousa, S Zaggia, V Adibekyan, R Bonito, E Caffau, S Daflon, DK Feuillet, M Gebran, JI Gonzalez Hernandez, G Guiglion, A Herrero, A Lobel, J Maiz Apellaniz, T Merle, Š Mikolaitis, D Montes, T Morel, C Soubiran, L Spina, HM Tabernero, G Tautvaišiene, G Traven, M Valentini, M Van der Swaelmen, S Villanova, NJ Wright, U Abbas, V Aguirre Børsen-Koch, J Alves, L Balaguer-Nunez, PS Barklem, D Barrado, SR Berlanas, AS Binks, A Bressan, R Capuzzo-Dolcetta, L Casagrande, L Casamiquela, RS Collins, V D'Orazi, MLL Dantas, VP Debattista, E Delgado-Mena, P Di Marcantonio, A Drazdauskas, NW Evans, B Famaey, M Franchini, Y Frémat, ED Friel, X Fu, D Geisler, O Gerhard, EA Gonzalez Solares, EK Grebel, ML Gutierrez Albarran, D Hatzidimitriou, EV Held, F Jiménez-Esteban, H Jönsson, C Jordi, T Khachaturyants, G Kordopatis, J Kos, N Lagarde, L Mahy, M Mapelli, E Marfil, SL Martell, S Messina, A Miglio, I Minchev, A Moitinho, J Montalban, MJPFG Monteiro, C Morossi, N Mowlavi, A Mucciarelli, DNA Murphy, N Nardetto, S Ortolani, F Paletou, J Palouš, E Paunzen, JC Pickering, A Quirrenbach, P Re Fiorentin, JI Read, D Romano, N Ryde, N Sanna, W Santos, GM Seabroke, A Spagna, M Steinmetz, E Stonkuté, E Sutorius, F Thévenin, M Tosi, M Tsantaki, JS Vink, N Wright, RFG Wyse, M Zoccali, J Zorec, DB Zucker, NA Walton
More details from the publisher
More details