SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova

The Astrophysical Journal Letters American Astronomical Society 954:2 (2023) l42

Authors:

WV Jacobson-Galán, L Dessart, R Margutti, R Chornock, RJ Foley, CD Kilpatrick, DO Jones, K Taggart, CR Angus, S Bhattacharjee, LA Braff, D Brethauer, AJ Burgasser, F Cao, CM Carlile, KC Chambers, DA Coulter, E Dominguez-Ruiz, CB Dickinson, T de Boer, A Gagliano, C Gall, H Gao, EL Gates, S Gomez, M Guolo, MRJ Halford, J Hjorth, ME Huber, MN Johnson, PR Karpoor, T Laskar, N LeBaron, Z Li, Y Lin, SD Loch, PD Lynam, EA Magnier, P Maloney, DJ Matthews, M McDonald, H-Y Miao, D Milisavljevic, Y-C Pan, S Pradyumna, CL Ransome, JM Rees, A Rest, C Rojas-Bravo, NR Sandford, L Sandoval Ascencio, S Sanjaripour, A Savino, H Sears, N Sharei, SJ Smartt, ER Softich, CA Theissen, S Tinyanont, H Tohfa, VA Villar, Q Wang, RJ Wainscoat, AL Westerling, E Wiston, MA Wozniak, SK Yadavalli, Y Zenati

Complex variations in X-ray polarization in the X-ray pulsar LS V +44 17/RX J0440.9+4431

Astronomy & Astrophysics EDP Sciences 677 (2023) a57

Authors:

Victor Doroshenko, Juri Poutanen, Jeremy Heyl, Sergey S Tsygankov, Ilaria Caiazzo, Roberto Turolla, Alexandra Veledina, Martin C Weisskopf, Sofia V Forsblom, Denis González-Caniulef, Vladislav Loktev, Christian Malacaria, Alexander A Mushtukov, Valery F Suleimanov, Alexander A Lutovinov, Ilya A Mereminskiy, Sergey V Molkov, Alexander Salganik, Andrea Santangelo, Andrei V Berdyugin, Vadim Kravtsov, Anagha P Nitindala, Iván Agudo, Lucio A Antonelli, Matteo Bachetti, 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, Alessandro Di Marco, Immacolata Donnarumma, Michal Dovčiak, Steven R Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier A García, Shuichi Gunji, Kiyoshi Hayashida, Wataru Iwakiri, Svetlana G Jorstad, Philip Kaaret, Vladimir Karas, Fabian Kislat, Takao Kitaguchi, Jeffery J Kolodziejczak, Henric Krawczynski, Fabio La Monaca, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Frédéric Marin, Andrea Marinucci, Alan P Marscher, Herman L Marshall, Francesco Massaro, Giorgio Matt, Ikuyuki Mitsuishi, Tsunefumi Mizuno, Fabio Muleri, 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, Maura Pilia, 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, Douglas A Swartz, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Allyn F Tennant, Nicholas E Thomas, Francesco Tombesi, Alessio Trois, Jacco Vink, Kinwah Wu, Fei Xie, Silvia Zane

Pulsar polarization: a partial-coherence model

Monthly Notices of the Royal Astronomical Society Oxford University Press 525:1 (2023) 840-853

Authors:

Lucy S Oswald, Aris Karastergiou, Simon Johnston

Abstract:

The population of radio pulsars is observed to demonstrate certain polarization properties not explained by the conventional picture of pulsar polarization, namely frequency evolution of polarization, deviations of the linear polarization angle from a curve of geometric origins, and the presence of features in the circular polarization. We present the partial-coherence model as a way to explain the co-occurrence of these features and to provide an origin for circular polarization in radio pulsar profiles. We describe the mathematics of the model and demonstrate how it can explain these observed features, both on a population level and for the idiosyncrasies of individual pulsars. The partial coherence model can account for complex polarization behaviour, enabling improved access to information about pulsar geometries. We discuss the scientific implications of this for our understanding of pulsar radio emission and propagation.

X-ray polarimetry of the accreting pulsar GX 301−2

Astronomy & Astrophysics EDP Sciences 678 (2023) a119

Authors:

Valery F Suleimanov, Sofia V Forsblom, Sergey S Tsygankov, Juri Poutanen, Victor Doroshenko, Rosalia Doroshenko, Fiamma Capitanio, Alessandro Di Marco, Denis González-Caniulef, Jeremy Heyl, Fabio La Monaca, Alexander A Lutovinov, Sergey V Molkov, Christian Malacaria, Alexander A Mushtukov, Andrey E Shtykovsky, Iván Agudo, Lucio A Antonelli, Matteo Bachetti, Luca Baldini, Wayne H Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D Bongiorno, Raffaella Bonino, Alessandro Brez, Niccolò Bucciantini, 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, Fabian Kislat, Takao Kitaguchi, Jeffery J Kolodziejczak, Henric Krawczynski, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Frédéric Marin, Andrea Marinucci, Alan P Marscher, Herman L Marshall, Francesco Massaro, Giorgio Matt, Ikuyuki Mitsuishi, Tsunefumi Mizuno, Fabio Muleri, 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, Maura Pilia, 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, Douglas A Swartz, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Allyn F Tennant, Nicholas E Thomas, Francesco Tombesi, Alessio Trois, Roberto Turolla, Jacco Vink, Martin C Weisskopf, Kinwah Wu, Fei Xie, Silvia Zane

Sub-second infrared variability from the archetypal accreting neutron star 4U 1728−34

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 525:2 (2023) 2509-2518

Authors:

FM Vincentelli, P Casella, A Borghese, Y Cavecchi, G Mastroserio, L Stella, D Altamirano, M Armas Padilla, MC Baglio, TM Belloni, J Casares, VA Cúneo, N Degenaar, M Díaz Trigo, R Fender, T Maccarone, J Malzac, D Mata Sánchez, M Middleton, S Migliari, T Muñoz-Darias, K O’Brien, G Panizo-Espinar, J Sánchez-Sierras, DM Russell, P Uttley