Observation of inverse Compton emission from a long γ-ray burst

Nature Nature Research 575:7783 (2019) 459-463

Authors:

P Veres, Pn Bhat, Ms Briggs, Wh Cleveland, R Hamburg, Cm Hui, B Mailyan, Rd Preece, Oj Roberts, A von Kienlin, Ca Wilson-Hodge, D Kocevski, M Arimoto, D Tak, K Asano, M Axelsson, G Barbiellini, E Bissaldi, F Fana Dirirsa, R Gill, J Granot, J McEnery, N Omodei, S Razzaque, F Piron, Jl Racusin, Dj Thompson, S Campana, Mg Bernardini, Npm Kuin, Mh Siegel, Sb Cenko, P O'Brien, M Capalbi, A Daì, M De Pasquale, J Gropp, N Klingler, Jp Osborne, M Perri, Rlc Starling, G Tagliaferri, A Tohuvavohu, A Ursi, M Tavani, M Cardillo, C Casentini, G Piano, Ian Heywood

Abstract:

Long-duration γ-ray bursts (GRBs) originate from ultra-relativistic jets launched from the collapsing cores of dying massive stars. They are characterized by an initial phase of bright and highly variable radiation in the kiloelectronvolt-to-megaelectronvolt band, which is probably produced within the jet and lasts from milliseconds to minutes, known as the prompt emission1,2. Subsequently, the interaction of the jet with the surrounding medium generates shock waves that are responsible for the afterglow emission, which lasts from days to months and occurs over a broad energy range from the radio to the gigaelectronvolt bands1-6. The afterglow emission is generally well explained as synchrotron radiation emitted by electrons accelerated by the external shock7-9. Recently, intense long-lasting emission between 0.2 and 1 teraelectronvolts was observed from GRB 190114C10,11. Here we report multi-frequency observations of GRB 190114C, and study the evolution in time of the GRB emission across 17 orders of magnitude in energy, from 5 × 10-6 to 1012 electronvolts. We find that the broadband spectral energy distribution is double-peaked, with the teraelectronvolt emission constituting a distinct spectral component with power comparable to the synchrotron component. This component is associated with the afterglow and is satisfactorily explained by inverse Compton up-scattering of synchrotron photons by high-energy electrons. We find that the conditions required to account for the observed teraelectronvolt component are typical for GRBs, supporting the possibility that inverse Compton emission is commonly produced in GRBs.

Search for Gravitational-wave Signals Associated with Gamma-Ray Bursts during the Second Observing Run of Advanced LIGO and Advanced Virgo

The Astrophysical Journal American Astronomical Society 886:1 (2019) 75

Authors:

BP Abbott, R Abbott, TD Abbott, S Abraham, F Acernese, K Ackley, C Adams, RX Adhikari, VB Adya, C Affeldt, M Agathos, K Agatsuma, N Aggarwal, OD Aguiar, L Aiello, A Ain, P Ajith, G Allen, A Allocca, MA Aloy, PA Altin, A Amato, S Anand, A Ananyeva, SB Anderson, WG Anderson, SV Angelova, S Antier, S Appert, K Arai, MC Araya, JS Areeda, M Arène, N Arnaud, SM Aronson, S Ascenzi, G Ashton, SM Aston, P Astone, F Aubin, P Aufmuth, K AultONeal, C Austin, V Avendano, A Avila-Alvarez, S Babak, P Bacon, F Badaracco, MKM Bader, S Bae, J Baird, PT Baker, F Baldaccini, G Ballardin, SW Ballmer, A Bals, S Banagiri, JC Barayoga, C Barbieri, SE Barclay, BC Barish, D Barker, K Barkett, S Barnum, F Barone, B Barr, L Barsotti, M Barsuglia, D Barta, J Bartlett, I Bartos, R Bassiri, A Basti, M Bawaj, JC Bayley, M Bazzan, B Bécsy, M Bejger, I Belahcene, AS Bell, D Beniwal, MG Benjamin, BK Berger, G Bergmann, S Bernuzzi, CPL Berry, D Bersanetti, A Bertolini, J Betzwieser, R Bhandare, J Bidler, E Biggs, IA Bilenko, SA Bilgili, G Billingsley, R Birney, O Birnholtz, S Biscans, M Bischi, S Biscoveanu, A Bisht, M Bitossi, MA Bizouard, JK Blackburn, J Blackman, CD Blair, DG Blair, RM Blair, S Bloemen, F Bobba, N Bode, M Boer, Y Boetzel, G Bogaert, F Bondu, R Bonnand, P Booker, BA Boom, R Bork, V Boschi, S Bose, V Bossilkov, J Bosveld, Y Bouffanais, A Bozzi, C Bradaschia, PR Brady, A Bramley, M Branchesi, JE Brau, M Breschi, T Briant, JH Briggs, F Brighenti, A Brillet, M Brinkmann, P Brockill, AF Brooks, J Brooks, DD Brown, S Brunett, A Buikema, T Bulik, HJ Bulten, A Buonanno, D Buskulic, C Buy, RL Byer, M Cabero, L Cadonati, G Cagnoli, C Cahillane, J Calderón Bustillo, TA Callister, E Calloni, JB Camp, WA Campbell, M Canepa, KC Cannon, H Cao, J Cao, G Carapella, F Carbognani, S Caride, MF Carney, G Carullo, J Casanueva Diaz, C Casentini, S Caudill, M Cavaglià, F Cavalier, R Cavalieri, G Cella, P Cerdá-Durán, E Cesarini, O Chaibi, K Chakravarti, SJ Chamberlin, M Chan, S Chao, P Charlton, EA Chase, E Chassande-Mottin, D Chatterjee, M Chaturvedi, BD Cheeseboro, HY Chen, X Chen, Y Chen, H-P Cheng, CK Cheong, HY Chia, F Chiadini, A Chincarini, A Chiummo, G Cho, HS Cho, M Cho, N Christensen, Q Chu, S Chua, KW Chung, S Chung, G Ciani, M Cieślar, AA Ciobanu, R Ciolfi, F Cipriano, A Cirone, F Clara, JA Clark, P Clearwater, F Cleva, E Coccia, P-F Cohadon, D Cohen, M Colleoni, CG Collette, C Collins, M Colpi, LR Cominsky, M Constancio, L Conti, SJ Cooper, P Corban, TR Corbitt, I Cordero-Carrión, S Corezzi, KR Corley, N Cornish, D Corre, A Corsi, S Cortese, CA Costa, R Cotesta, MW Coughlin, SB Coughlin, J-P Coulon, ST Countryman, P Couvares, PB Covas, EE Cowan, DM Coward, MJ Cowart, DC Coyne, R Coyne, JDE Creighton, TD Creighton, J Cripe, M Croquette, SG Crowder, TJ Cullen, A Cumming, L Cunningham, E Cuoco, T Dal Canton, G Dálya, B D’Angelo, SL Danilishin, S D’Antonio, K Danzmann, A Dasgupta, CF Da Silva Costa, LEH Datrier, V Dattilo, I Dave, M Davier, D Davis, EJ Daw, D DeBra, M Deenadayalan, J Degallaix, M De Laurentis, S Deléglise, W Del Pozzo, LM DeMarchi, N Demos, T Dent, R De Pietri, R De Rosa, C De Rossi, R DeSalvo, O de Varona, S Dhurandhar, MC Díaz, T Dietrich, L Di Fiore, C DiFronzo, C Di Giorgio, F Di Giovanni, M Di Giovanni, T Di Girolamo, A Di Lieto, B Ding, S Di Pace, I Di Palma, F Di Renzo, AK Divakarla, A Dmitriev, Z Doctor, F Donovan, KL Dooley, S Doravari, I Dorrington, TP Downes, M Drago, JC Driggers, Z Du, J-G Ducoin, P Dupej, O Durante, SE Dwyer, PJ Easter, G Eddolls, TB Edo, A Effler, P Ehrens, J Eichholz, SS Eikenberry, M Eisenmann, RA Eisenstein, L Errico, RC Essick, H Estelles, D Estevez, ZB Etienne, T Etzel, M Evans, TM Evans, V Fafone, S Fairhurst, X Fan, S Farinon, B Farr, WM Farr, EJ Fauchon-Jones, M Favata, M Fays, M Fazio, C Fee, J Feicht, MM Fejer, F Feng, A Fernandez-Galiana, I Ferrante, EC Ferreira, TA Ferreira, F Fidecaro, I Fiori, D Fiorucci, M Fishbach, RP Fisher, JM Fishner, R Fittipaldi, M Fitz-Axen, V Fiumara, R Flaminio, M Fletcher, E Floden, E Flynn, H Fong, JA Font, PWF Forsyth, J-D Fournier, Francisco Hernandez Vivanco, S Frasca, F Frasconi, Z Frei, A Freise, R Frey, V Frey, P Fritschel, VV Frolov, G Fronzè, P Fulda, M Fyffe, HA Gabbard, BU Gadre, SM Gaebel, JR Gair, L Gammaitoni, SG Gaonkar, C García-Quirós, F Garufi, B Gateley, S Gaudio, G Gaur, V Gayathri, G Gemme, E Genin, A Gennai, D George, J George, L Gergely, S Ghonge, Abhirup Ghosh, Archisman Ghosh, S Ghosh, B Giacomazzo, JA Giaime, KD Giardina, DR Gibson, K Gill, L Glover, J Gniesmer, P Godwin, E Goetz, R Goetz, B Goncharov, G González, JM Gonzalez Castro, A Gopakumar, SE Gossan, M Gosselin, R Gouaty, B Grace, A Grado, M Granata, A Grant, S Gras, P Grassia, C Gray, R Gray, G Greco, AC Green, R Green, EM Gretarsson, A Grimaldi, SJ Grimm, P Groot, H Grote, S Grunewald, P Gruning, GM Guidi, HK Gulati, Y Guo, A Gupta, Anchal Gupta, P Gupta, EK Gustafson, R Gustafson, L Haegel, O Halim, BR Hall, ED Hall, EZ Hamilton, G Hammond, M Haney, MM Hanke, J Hanks, C Hanna, MD Hannam, OA Hannuksela, TJ Hansen, J Hanson, T Harder, T Hardwick, K Haris, J Harms, GM Harry, IW Harry, RK Hasskew, CJ Haster, K Haughian, FJ Hayes, J Healy, A Heidmann, MC Heintze, H Heitmann, F Hellman, P Hello, G Hemming, M Hendry, IS Heng, J Hennig, M Heurs, S Hild, T Hinderer, S Hochheim, D Hofman, AM Holgado, NA Holland, K Holt, DE Holz, P Hopkins, C Horst, J Hough, EJ Howell, CG Hoy, Y Huang, MT Hübner, EA Huerta, D Huet, B Hughey, V Hui, S Husa, SH Huttner, T Huynh-Dinh, B Idzkowski, A Iess, H Inchauspe, C Ingram, R Inta, G Intini, B Irwin, HN Isa, J-M Isac, M Isi, BR Iyer, T Jacqmin, SJ Jadhav, K Jani, NN Janthalur, P Jaranowski, D Jariwala, AC Jenkins, J Jiang, DS Johnson, AW Jones, DI Jones, JD Jones, R Jones, RJG Jonker, L Ju, J Junker, CV Kalaghatgi, V Kalogera, B Kamai, S Kandhasamy, G Kang, JB Kanner, SJ Kapadia, S Karki, R Kashyap, M Kasprzack, S Katsanevas, E Katsavounidis, W Katzman, S Kaufer, K Kawabe, NV Keerthana, F Kéfélian, D Keitel, R Kennedy, JS Key, FY Khalili, I Khan, S Khan, EA Khazanov, N Khetan, M Khursheed, N Kijbunchoo, Chunglee Kim, JC Kim, K Kim, W Kim, WS Kim, Y-M Kim, C Kimball, PJ King, M Kinley-Hanlon, R Kirchhoff, JS Kissel, L Kleybolte, JH Klika, S Klimenko, TD Knowles, P Koch, SM Koehlenbeck, G Koekoek, S Koley, V Kondrashov, A Kontos, N Koper, M Korobko, WZ Korth, M Kovalam, DB Kozak, C Krämer, V Kringel, N Krishnendu, A Królak, N Krupinski, G Kuehn, A Kumar, P Kumar, Rahul Kumar, Rakesh Kumar, L Kuo, A Kutynia, S Kwang, BD Lackey, D Laghi, KH Lai, TL Lam, M Landry, BB Lane, RN Lang, J Lange, B Lantz, RK Lanza, A Lartaux-Vollard, PD Lasky, M Laxen, A Lazzarini, C Lazzaro, P Leaci, S Leavey, YK Lecoeuche, CH Lee, HK Lee, HM Lee, HW Lee, J Lee, K Lee, J Lehmann, AK Lenon, N Leroy, N Letendre, Y Levin, A Li, J Li, KJL Li, TGF Li, X Li, F Lin, F Linde, SD Linker, TB Littenberg, J Liu, X Liu, M Llorens-Monteagudo, RKL Lo, LT London, A Longo, M Lorenzini, V Loriette, M Lormand, G Losurdo, JD Lough, CO Lousto, G Lovelace, ME Lower, H Lück, D Lumaca, AP Lundgren, R Lynch, Y Ma, R Macas, S Macfoy, M MacInnis, DM Macleod, A Macquet, I Magaña Hernandez, F Magaña-Sandoval, RM Magee, E Majorana, I Maksimovic, A Malik, N Man, V Mandic, V Mangano, GL Mansell, M Manske, M Mantovani, M Mapelli, F Marchesoni, F Marion, S Márka, Z Márka, C Markakis, AS Markosyan, A Markowitz, E Maros, A Marquina, S Marsat, F Martelli, IW Martin, RM Martin, V Martinez, DV Martynov, H Masalehdan, K Mason, E Massera, A Masserot, TJ Massinger, M Masso-Reid, S Mastrogiovanni, A Matas, F Matichard, L Matone, N Mavalvala, JJ McCann, R McCarthy, DE McClelland, S McCormick, L McCuller, SC McGuire, C McIsaac, J McIver, DJ McManus, T McRae, ST McWilliams, D Meacher, GD Meadors, M Mehmet, AK Mehta, J Meidam, E Mejuto Villa, A Melatos, G Mendell, RA Mercer, L Mereni, K Merfeld, EL Merilh, M Merzougui, S Meshkov, C Messenger, C Messick, F Messina, R Metzdorff, PM Meyers, F Meylahn, A Miani, H Miao, C Michel, H Middleton, L Milano, AL Miller, M Millhouse, JC Mills, MC Milovich-Goff, O Minazzoli, Y Minenkov, A Mishkin, C Mishra, T Mistry, S Mitra, VP Mitrofanov, G Mitselmakher, R Mittleman, G Mo, D Moffa, K Mogushi, SRP Mohapatra, M Molina-Ruiz, M Mondin, M Montani, CJ Moore, D Moraru, F Morawski, G Moreno, S Morisaki, B Mours, CM Mow-Lowry, F Muciaccia, Arunava Mukherjee, D Mukherjee, S Mukherjee, Subroto Mukherjee, N Mukund, A Mullavey, J Munch, EA Muñiz, M Muratore, PG Murray, I Nardecchia, L Naticchioni, RK Nayak, BF Neil, J Neilson, G Nelemans, TJN Nelson, M Nery, A Neunzert, L Nevin, KY Ng, S Ng, C Nguyen, P Nguyen, D Nichols, SA Nichols, S Nissanke, F Nocera, C North, LK Nuttall, M Obergaulinger, J Oberling, BD O’Brien, G Oganesyan, GH Ogin, JJ Oh, SH Oh, F Ohme, H Ohta, MA Okada, M Oliver, P Oppermann, Richard J Oram, B O’Reilly, RG Ormiston, LF Ortega, R O’Shaughnessy, S Ossokine, DJ Ottaway, H Overmier, BJ Owen, AE Pace, G Pagano, MA Page, G Pagliaroli, A Pai, SA Pai, JR Palamos, O Palashov, C Palomba, H Pan, PK Panda, PTH Pang, C Pankow, F Pannarale, BC Pant, F Paoletti, A Paoli, A Parida, W Parker, D Pascucci, A Pasqualetti, R Passaquieti, D Passuello, M Patil, B Patricelli, E Payne, BL Pearlstone, TC Pechsiri, AJ Pedersen, M Pedraza, R Pedurand, A Pele, S Penn, A Perego, CJ Perez, C Périgois, A Perreca, J Petermann, HP Pfeiffer, M Phelps, KS Phukon, OJ Piccinni, M Pichot, F Piergiovanni, V Pierro, G Pillant, L Pinard, IM Pinto, M Pirello, M Pitkin, W Plastino, R Poggiani, DYT Pong, S Ponrathnam, P Popolizio, J Powell, AK Prajapati, J Prasad, K Prasai, R Prasanna, G Pratten, T Prestegard, M Principe, GA Prodi, L Prokhorov, M Punturo, P Puppo, M Pürrer, H Qi, V Quetschke, PJ Quinonez, FJ Raab, G Raaijmakers, H Radkins, N Radulesco, P Raffai, S Raja, C Rajan, B Rajbhandari, M Rakhmanov, KE Ramirez, A Ramos-Buades, Javed Rana, K Rao, P Rapagnani, V Raymond, M Razzano, J Read, T Regimbau, L Rei, S Reid, DH Reitze, P Rettegno, F Ricci, CJ Richardson, JW Richardson, PM Ricker, G Riemenschneider, K Riles, M Rizzo, NA Robertson, F Robinet, A Rocchi, L Rolland, JG Rollins, VJ Roma, M Romanelli, R Romano, CL Romel, JH Romie, CA Rose, D Rose, K Rose, D Rosińska, SG Rosofsky, MP Ross, S Rowan, A Rüdiger, P Ruggi, G Rutins, K Ryan, S Sachdev, T Sadecki, M Sakellariadou, OS Salafia, L Salconi, M Saleem, A Samajdar, L Sammut, EJ Sanchez, LE Sanchez, N Sanchis-Gual, JR Sanders, KA Santiago, E Santos, N Sarin, B Sassolas, BS Sathyaprakash, O Sauter, RL Savage, P Schale, M Scheel, J Scheuer, P Schmidt, R Schnabel, RMS Schofield, A Schönbeck, E Schreiber, BW Schulte, BF Schutz, J Scott, SM Scott, E Seidel, D Sellers, AS Sengupta, N Sennett, D Sentenac, V Sequino, A Sergeev, Y Setyawati, DA Shaddock, T Shaffer, MS Shahriar, MB Shaner, A Sharma, P Sharma, P Shawhan, H Shen, R Shink, DH Shoemaker, DM Shoemaker, K Shukla, S ShyamSundar, K Siellez, M Sieniawska, D Sigg, LP Singer, D Singh, N Singh, A Singhal, AM Sintes, S Sitmukhambetov, V Skliris, BJJ Slagmolen, TJ Slaven-Blair, JR Smith, RJE Smith, S Somala, EJ Son, S Soni, B Sorazu, F Sorrentino, T Souradeep, E Sowell, AP Spencer, M Spera, AK Srivastava, V Srivastava, K Staats, C Stachie, M Standke, DA Steer, M Steinke, J Steinlechner, S Steinlechner, D Steinmeyer, SP Stevenson, D Stocks, R Stone, DJ Stops, KA Strain, G Stratta, SE Strigin, A Strunk, R Sturani, AL Stuver, V Sudhir, TZ Summerscales, L Sun, S Sunil, A Sur, J Suresh, PJ Sutton, BL Swinkels, MJ Szczepańczyk, M Tacca, SC Tait, C Talbot, DB Tanner, D Tao, M Tápai, A Tapia, JD Tasson, R Taylor, R Tenorio, L Terkowski, M Thomas, P Thomas, SR Thondapu, KA Thorne, E Thrane, Shubhanshu Tiwari, Srishti Tiwari, V Tiwari, K Toland, M Tonelli, Z Tornasi, A Torres-Forné, CI Torrie, D Töyrä, F Travasso, G Traylor, MC Tringali, A Tripathee, A Trovato, L Trozzo, KW Tsang, M Tse, R Tso, L Tsukada, D Tsuna, T Tsutsui, D Tuyenbayev, K Ueno, D Ugolini, CS Unnikrishnan, AL Urban, SA Usman, H Vahlbruch, G Vajente, G Valdes, M Valentini, N van Bakel, M van Beuzekom, JFJ van den Brand, C Van Den Broeck, DC Vander-Hyde, L van der Schaaf, JV VanHeijningen, AA van Veggel, M Vardaro, V Varma, S Vass, M Vasúth, A Vecchio, G Vedovato, J Veitch, PJ Veitch, K Venkateswara, G Venugopalan, D Verkindt, F Vetrano, A Viceré, AD Viets, S Vinciguerra, DJ Vine, J-Y Vinet, S Vitale, T Vo, H Vocca, C Vorvick, SP Vyatchanin, AR Wade, LE Wade, M Wade, R Walet, M Walker, L Wallace, S Walsh, H Wang, JZ Wang, S Wang, WH Wang, YF Wang, RL Ward, ZA Warden, J Warner, M Was, J Watchi, B Weaver, L-W Wei, M Weinert, AJ Weinstein, R Weiss, F Wellmann, L Wen, EK Wessel, P Weßels, JW Westhouse, K Wette, JT Whelan, BF Whiting, C Whittle, DM Wilken, D Williams, AR Williamson, JL Willis, B Willke, W Winkler, CC Wipf, H Wittel, G Woan, J Woehler, JK Wofford, JL Wright, DS Wu, DM Wysocki, S Xiao, R Xu, H Yamamoto, CC Yancey, L Yang, Y Yang, Z Yang, MJ Yap, M Yazback, DW Yeeles, Hang Yu, Haocun Yu, SHR Yuen, AK Zadrożny, A Zadrożny, M Zanolin, T Zelenova, J-P Zendri, M Zevin, J Zhang, L Zhang, T Zhang, C Zhao, G Zhao, M Zhou, Z Zhou, XJ Zhu, ME Zucker, J Zweizig, RL Aptekar, WV Boynton, DD Frederiks, SV Golenetskii, DV Golovin, K Hurley, AV Kozlova, ML Litvak, IG Mitrofanov, AB Sanin, DS Svinkin, Francesco Carotenuto, Badri Krishnan

Extracting the global signal from 21-cm fluctuations: The multi-tracer approach

Monthly Notices of the Royal Astronomical Society Oxford University Press (2019)

Authors:

A Fialkov, R Barkana, Matthew Jarvis

Abstract:

The multi-tracer technique employs a ratio of densities of two differently biased galaxy samples that trace the same underlying matter density field, and was proposed to alleviate the cosmic variance problem. Here we propose a novel application of this approach, applying it to two different tracers one of which is the 21-cm signal of neutral hydrogen from the epochs of reionization and comic dawn. The second tracer is assumed to be a sample of high-redshift galaxies, but the approach can be generalized and applied to other high-redshift tracers. We show that the anisotropy of the ratio of the two density fields can be used to measure the sky-averaged 21-cm signal, probe the spectral energy distribution of radiative sources that drive this signal, and extract large-scale properties of the second tracer, e.g., the galaxy bias. Using simulated 21-cm maps and mock galaxy samples, we find that the method works well for an idealized galaxy survey. However, in the case of a more realistic galaxy survey which only probes highly biased luminous galaxies, the inevitable Poisson noise makes the reconstruction far more challenging. This difficulty can be mitigated with the greater sensitivity of future telescopes along with larger survey volumes.

MKT J170456.2-482100: the first transient discovered by MeerKAT

(2019)

Authors:

LN Driessen, I McDonald, DAH Buckley, M Caleb, EJ Kotze, SB Potter, KM Rajwade, A Rowlinson, BW Stappers, E Tremou, PA Woudt, RP Fender, R Armstrong, P Groot, I Heywood, A Horesh, AJ van der Horst, E Koerding, VA McBride, JCA Miller-Jones, KP Mooley, RAMJ Wijers

Physical constraints from near-infrared fast photometry of the black-hole transient GX 339-4

(2019)

Authors:

FM Vincentelli, P Casella, P Petrucci, T Maccarone, D Russell, P Uttley, B De Marco, R Fender, P Gandhi, J Malzac, K O'Brien, J Tomsick