The Cooling of the Central Compact Object in Cas A from 2006 to 2020

The Astrophysical Journal American Astronomical Society 932:2 (2022) 83

Authors:

B Posselt, GG Pavlov

Evidence for γ-ray emission from the remnant of Kepler’s supernova based on deep H.E.S.S. observations⋆

Astronomy & Astrophysics EDP Sciences 662 (2022) a65

Authors:

F Aharonian, F Ait Benkhali, EO Angüner, H Ashkar, M Backes, V Barbosa Martins, R Batzofin, Y Becherini, D Berge, K Bernlöhr, M Böttcher, C Boisson, J Bolmont, M de Bony de Lavergne, M Breuhaus, R Brose, F Brun, T Bulik, T Bylund, F Cangemi, S Caroff, S Casanova, M Cerruti, T Chand, A Chen, O Chibueze, G Cotter, P Cristofari, J Damascene Mbarubucyeye, J Devin, A Djannati-Ataï, A Dmytriiev, K Egberts, S Einecke, J-P Ernenwein, K Feijen, A Fiasson, G Fichet de Clairfontaine, G Fontaine, S Funk, S Gabici, YA Gallant, S Ghafourizadeh, G Giavitto, L Giunti, D Glawion, JF Glicenstein, M-H Grondin, M Hörbe, W Hofmann, TL Holch, M Holler, D Horns, Z Huang, M Jamrozy, V Joshi, I Jung-Richardt, E Kasai, K Katarzyński, U Katz, B Khélifi, W Kluźniak, N Komin, K Kosack, D Kostunin, A Lemière, M Lemoine-Goumard, J-P Lenain, F Leuschner, T Lohse, A Luashvili, I Lypova, J Mackey, D Malyshev, D Malyshev, V Marandon, P Marchegiani, A Marcowith, G Martí-Devesa, R Marx, G Maurin, PJ Meintjes, M Meyer, A Mitchell, R Moderski, L Mohrmann, A Montanari, E Moulin, J Muller, K Nakashima, M de Naurois, A Nayerhoda, J Niemiec, A Priyana Noel, P O’Brien, S Ohm, L Olivera-Nieto, E de Ona Wilhelmi, M Ostrowski, S Panny, M Panter, RD Parsons, G Peron, V Poireau, DA Prokhorov, G Pühlhofer, M Punch, A Quirrenbach, P Reichherzer, A Reimer, O Reimer, M Renaud, B Reville, F Rieger, G Rowell, B Rudak, H Rueda Ricarte, V Sahakian, S Sailer, H Salzmann, DA Sanchez, A Santangelo, M Sasaki, J Schäfer, F Schüssler, HM Schutte, U Schwanke, JNS Shapopi, R Simoni, H Sol, A Specovius, S Spencer, Ł Stawarz, S Steinmassl, C Steppa, I Sushch, T Takahashi, T Tanaka, AM Taylor, R Terrier, M Tsirou, Y Uchiyama, T Unbehaun, C van Eldik, J Veh, J Vink, HJ Völk, SJ Wagner, F Werner, R White, A Wierzcholska, YW Wong, A Yusafzai, M Zacharias, D Zargaryan, AA Zdziarski, A Zech, SJ Zhu, S Zouari, N Żywucka

Long-term rotational and emission variability of 17 radio pulsars

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 513:4 (2022) 5861-5880

Authors:

B Shaw, BW Stappers, P Weltevrede, PR Brook, A Karastergiou, CA Jordan, MJ Keith, M Kramer, AG Lyne

The C-Band All-Sky Survey (C-BASS): template fitting of diffuse galactic microwave emission in the northern sky

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 513:4 (2022) 5900-5919

Authors:

SE Harper, C Dickinson, A Barr, R Cepeda-Arroita, RDP Grumitt, HM Heilgendorff, L Jew, JL Jonas, ME Jones, JP Leahy, J Leech, TJ Pearson, MW Peel, ACS Readhead, AC Taylor

Discovery of a radio-emitting neutron star with an ultra-long spin period of 76 s

Nature Astronomy Springer Nature 6:7 (2022) 828-836

Authors:

Manisha Caleb, Ian Heywood, Kaustubh Rajwade, Mateusz Malenta, Benjamin Stappers, Ewan Barr, Weiwei Chen, Vincent Morello, Sotiris Sanidas, Jakob van den Eijnden, Michael Kramer, David Buckley, Jaco Brink, Sara Elisa Motta, Patrick Woudt, Patrick Weltevrede, Fabian Jankowski, Mayuresh Surnis, Sarah Buchner, Mechiel Christiaan Bezuidenhout, Laura Nicole Driessen, Rob Fender

Abstract:

The radio-emitting neutron star population encompasses objects with spin periods ranging from milliseconds to tens of seconds. As they age and spin more slowly, their radio emission is expected to cease. We present the discovery of an ultra-long period radio-emitting neutron star, PSR J0901-4046, with spin properties distinct from the known spin and magnetic-decay powered neutron stars. With a spin-period of 75.88 s, a characteristic age of 5.3 Myr, and a narrow pulse duty-cycle, it is uncertain how radio emission is generated and challenges our current understanding of how these systems evolve. The radio emission has unique spectro-temporal properties such as quasi-periodicity and partial nulling that provide important clues to the emission mechanism. Detecting similar sources is observationally challenging, which implies a larger undetected population. Our discovery establishes the existence of ultra-long period neutron stars, suggesting a possible connection to the evolution of highly magnetized neutron stars, ultra-long period magnetars, and fast radio bursts.