A radio parallax to the black hole X-ray binary MAXI J1820+070

(2019)

Authors:

P Atri, JCA Miller-Jones, A Bahramian, RM Plotkin, AT Deller, PG Jonker, TJ Maccarone, GR Sivakoff, R Soria, D Altamirano, T Belloni, R Fender, E Koerding, D Maitra, S Markoff, S Migliari, D Russell, T Russell, CL Sarazin, AJ Tetarenko, V Tudose

Physical Constraints from Near-infrared Fast Photometry of the Black Hole Transient GX 339–4

The Astrophysical Journal Letters American Astronomical Society 887:1 (2019) l19

Authors:

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

Radio observations of supernova remnant G1.9+0.3

Monthly Notices of the Royal Astronomical Society Oxford University Press 492:2 (2019) 2606-2621

Authors:

Kieran J Luken, Miroslav D Filipovic, Nigel I Maxted, Roland Kothes, Ray P Norris, James R Allison, Rebecca Blackwell, Catherine Braiding, Robert Brose, Michael Burton, Ain Y De Horta, Tim J Galvin, Lisa Harvey-Smith, Natasha Hurley-Walker, Denis Leahy, Nicholas O Ralph, Quentin Roper, Gavin Rowell, Iurii Sushch, Dejan Urosevic, Graeme F Wong

Abstract:

We present 1–10 GHz radio continuum flux density, spectral index, polarization, and rotation measure (RM) images of the youngest known Galactic supernova remnant (SNR) G1.9+0.3, using observations from the Australia Telescope Compact Array. We have conducted an expansion study spanning eight epochs between 1984 and 2017, yielding results consistent with previous expansion studies of G1.9+0.3. We find a mean radio continuum expansion rate of (0.78 ± 0.09) per cent yr−1 (or ∼8900 km s−1 at an assumed distance of 8.5 kpc), although the expansion rate varies across the SNR perimetre. In the case of the most recent epoch between 2016 and 2017, we observe faster-than-expected expansion of the northern region. We find a global spectral index for G1.9+0.3 of −0.81 ± 0.02 (76 MHz–10 GHz). Towards the northern region, however, the radio spectrum is observed to steepen significantly (∼−1). Towards the two so-called (east and west) ‘ears’ of G1.9+0.3, we find very different RM values of 400–600 and 100–200 rad m2, respectively. The fractional polarization of the radio continuum emission reaches (19 ± 2) per cent, consistent with other, slightly older, SNRs such as Cas A.

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