Pulsars, transients and relativistic astrophysics

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Key Science Goals for the Next-Generation Event Horizon Telescope

Galaxies MDPI 11:3 (2023) 61

Authors:

Michael D Johnson, Kazunori Akiyama, Lindy Blackburn, Katherine L Bouman, Avery E Broderick, Vitor Cardoso, Rob P Fender, Christian M Fromm, Peter Galison, José L Gómez, Daryl Haggard, Matthew L Lister, Andrei P Lobanov, Sera Markoff, Ramesh Narayan, Priyamvada Natarajan, Tiffany Nichols, Dominic W Pesce, Ziri Younsi, Andrew Chael, Koushik Chatterjee, Ryan Chaves, Juliusz Doboszewski, Richard Dodson, Sheperd S Doeleman, Jamee Elder, Garret Fitzpatrick, Kari Haworth, Janice Houston, Sara Issaoun, Yuri Y Kovalev, Aviad Levis, Rocco Lico, Alexandru Marcoci, Niels CM Martens, Neil M Nagar, Aaron Oppenheimer, Daniel CM Palumbo, Angelo Ricarte, María J Rioja, Freek Roelofs, Ann C Thresher, Paul Tiede, Jonathan Weintroub, Maciek Wielgus
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The DEHVILS survey overview and initial data release: high-quality near-infrared Type Ia supernova light curves at low redshift

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 522:2 (2023) 2478-2494

Authors:

Erik R Peterson, David O Jones, Daniel Scolnic, Bruno O Sánchez, Aaron Do, Adam G Riess, Sam M Ward, Arianna Dwomoh, Thomas de Jaeger, Saurabh W Jha, Kaisey S Mandel, Justin DR Pierel, Brodie Popovic, Benjamin M Rose, David Rubin, Benjamin J Shappee, Stephen Thorp, John L Tonry, R Brent Tully, Maria Vincenzi
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Constraints on axionlike particles from a combined analysis of three flaring Fermi flat-spectrum radio quasars

Physical Review D American Physical Society 107:8 (2023) 83027

Authors:

James Davies, Manuel Meyer, Garret Cotter

Abstract:

Many theories beyond the Standard Model of particle physics predict the existence of axionlike particles (ALPs) that mix with photons in the presence of a magnetic field. Searching for the effects of ALP-photon mixing in gamma-ray observations of blazars has provided some of the strongest constraints on ALP parameter space so far. Previously, only individual sources have been analyzed. We perform a combined analysis on Fermi Large Area Telescope data of three bright flaring flat-spectrum radio quasars, with the blazar jets themselves as the dominant mixing region. For the first time, we include a full treatment of photon-photon dispersion within the jet and account for the uncertainty in our B-field model by leaving the field strength free in the fitting. Overall, we find no evidence for ALPs but are able to exclude the ALP parameters 5 neV≲ma≲200 neV and gaγ≳5×10-12 GeV-1 with 95% confidence.
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Mass measurements and 3D orbital geometry of PSR J1933$-$6211

(2023)

Authors:

M Geyer, V Venkatraman Krishnan, PCC Freire, M Kramer, J Antoniadis, M Bailes, MCI Bernadich, S Buchner, AD Cameron, DJ Champion, A Karastergiou, MJ Keith, ME Lower, S Osłowski, A Possenti, A Parthasarathy, DJ Reardon, M Serylak, RM Shannon, R Spiewak, W van Straten, JPW Verbiest
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IXPE Observations of the Quintessential Wind-accreting X-Ray Pulsar Vela X-1

The Astrophysical Journal Letters American Astronomical Society 947:2 (2023) l20

Authors:

Sofia V Forsblom, Juri Poutanen, Sergey S Tsygankov, Matteo Bachetti, Alessandro Di Marco, Victor Doroshenko, Jeremy Heyl, Fabio La Monaca, Christian Malacaria, Herman L Marshall, Fabio Muleri, Alexander A Mushtukov, Maura Pilia, Daniele Rogantini, Valery F Suleimanov, Roberto Taverna, Fei Xie, Iván Agudo, Lucio A Antonelli, Luca Baldini, Wayne H Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D Bongiorno, Raffaella Bonino, Alessandro Brez, Niccolò Bucciantini, Fiamma Capitanio, Simone Castellano, Elisabetta Cavazzuti, Chien-Ting Chen, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Niccolò Di Lalla, Immacolata Donnarumma, Michal Dovčiak, Steven R Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier A Garcia, Shuichi Gunji, Kiyoshi Hayashida, Wataru Iwakiri, Svetlana G Jorstad, Philip Kaaret, Vladimir Karas, Takao Kitaguchi, Jeffery J Kolodziejczak, Henric Krawczynski, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Frédéric Marin, Andrea Marinucci, Alan P Marscher, Giorgio Matt, Ikuyuki Mitsuishi, Tsunefumi Mizuno, Michela Negro, Chi-Yung Ng, Stephen L O’Dell, Nicola Omodei, Chiara Oppedisano, Alessandro Papitto, George G Pavlov, Abel L Peirson, Matteo Perri, Melissa Pesce-Rollins, Pierre-Olivier Petrucci, Andrea Possenti, Simonetta Puccetti, Brian D Ramsey, John Rankin, Ajay Ratheesh, Oliver J Roberts, Roger W Romani, Carmelo Sgrò, Patrick Slane, Paolo Soffitta, Gloria Spandre, Rashid A Sunyaev, Douglas A Swartz, Toru Tamagawa, Fabrizio Tavecchio, Yuzuru Tawara, Allyn F Tennant, Nicholas E Thomas, Francesco Tombesi, Alessio Trois, Roberto Turolla, Jacco Vink, Martin C Weisskopf, Kinwah Wu, Silvia Zane
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