Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar

Colin J. Clark Holger J. Pletsch Jason Wu Lucas Guillemot 1, 2 Matthew Kerr Tyrel J. Johnson Fernando Camilo David Salvetti Bruce Allen David Anderson Carsten Aulbert Christian Beer Oliver Bock Andres Cuéllar Heinz-Bernd Eggenstein Henning Fehrmann Michael Kramer Shawn A. Kwang Bernd Machenschalk Lars Nieder Markus Ackermann Marco Ajello Luca Baldini Jean Ballet 3 Guido Barbiellini Denis Bastieri Ronaldo Bellazzini Elisabetta Bissaldi Roger D. Blandford Elliott D. Bloom Raffaella Bonino Eugenio Bottacini Terri J. Brandt Johan Bregeon 4 Philippe Bruel 5 Rolf Buehler Toby H. Burnett Sara Buson Rob A. Cameron Regina Caputo Patrizia A. Caraveo Elisabetta Cavazzuti Claudia Cecchi Eric Charles Alexandre Chekhtman Stefano Ciprini Lynn R. Cominsky Denise Costantin Sara Cutini Filippo d'Ammando Andrea de Luca Rachele Desiante Leonardo Di Venere Mattia Di Mauro Niccolò Di Lalla Seth W. Digel Cecilia Favuzzi Elizabeth C. Ferrara Anna Franckowiak Yasushi Fukazawa Stefan Funk Piergiorgio Fusco Fabio Gargano Dario Gasparrini Nico Giglietto Francesco Giordano Marcello Giroletti Germán A. Gomez-Vargas David Green Isabelle A. Grenier 3 Sylvain Guiriec Alice K. Harding John W. Hewitt Deirdre Horan 5 Guðlaugur Jóhannesson Shiki Kensei Michael Kuss Giovanni La Mura Stefan Larsson Luca Latronico Jian Li Francesco Longo Francesco Loparco Michael N. Lovellette Pasquale Lubrano Jeffrey D. Magill Simone Maldera Alberto Manfreda Mario N. Mazziotta Julie E. Mcenery Peter F. Michelson Nestor Mirabal Warit Mitthumsiri Tsunefumi Mizuno Maria Elena Monzani Aldo Morselli Igor V. Moskalenko Eric Nuss 4 Takashi Ohsugi Nicola Omodei Monica Orienti Elena Orlando Michele Palatiello Vaidehi S. Paliya Francesco de Palma David Paneque Jeremy S. Perkins Massimo Persic Melissa Pesce-Rollins Troy A. Porter Giacomo Principe Silvia Rainò Riccardo Rando Paul S. Ray Massimiliano Razzano Anita Reimer Olaf Reimer Roger W. Romani Pablo M. Saz Parkinson Carmelo Sgrò Eric J. Siskind David A. Smith 6 Francesca Spada Gloria Spandre Paolo Spinelli Jana B. Thayer David J. Thompson Diego F. Torres Eleonora Troja Giacomo Vianello Kent Wood Matthew Wood
Abstract : Millisecond pulsars (MSPs) are old neutron stars that spin hundreds of times per second and appear to pulsate as their emission beams cross our line of sight. To date, radio pulsations have been detected from all rotation-powered MSPs. In an attempt to discover radio-quiet gamma-ray MSPs, we used the aggregated power from the computers of tens of thousands of volunteers participating in the Einstein@Home distributed computing project to search for pulsations from unidentified gamma-ray sources in Fermi Large Area Telescope data. This survey discovered two isolated MSPs, one of which is the only known rotation-powered MSP to remain undetected in radio observations. These gamma-ray MSPs were discovered in completely blind searches without prior constraints from other observations, raising hopes for detecting MSPs from a predicted Galactic bulge population.
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Colin J. Clark, Holger J. Pletsch, Jason Wu, Lucas Guillemot, Matthew Kerr, et al.. Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar. Sc.Adv., 2018, 4 (2), pp.eaao7228. ⟨10.1126/sciadv.aao7228⟩. ⟨hal-01797367⟩

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