Timing Analysis of the 2022 Outburst of the Accreting Millisecond X-Ray Pulsar SAX J1808.4-3658: Hints of an Orbital Shrinking

We present a pulse timing analysis of NICER observations of the accreting millisecond X-ray pulsar SAX J1808.4−3658 during the outburst that started on 2022 August 19. Similar to previous outbursts, after decaying from a peak luminosity of ≃1 × 10 ^36 erg s ^−1 in about a week, the pulsar entered a...

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Autors principals:	Giulia Illiano, Alessandro Papitto, Andrea Sanna, Peter Bult, Filippo Ambrosino, Arianna Miraval Zanon, Francesco Coti Zelati, Luigi Stella, Diego Altamirano, Maria Cristina Baglio, Enrico Bozzo, Luciano Burderi, Domitilla de Martino, Alessandro Di Marco, Tiziana di Salvo, Carlo Ferrigno, Vladislav Loktev, Alessio Marino, Mason Ng, Maura Pilia, Juri Poutanen, Tuomo Salmi
Format:	Artigo
Idioma:	Inglês
Publicat:	IOP Publishing 2023-01-01
Col·lecció:	The Astrophysical Journal Letters
Matèries:	Stellar accretion disks Millisecond pulsars Neutron stars
Accés en línia:	https://doi.org/10.3847/2041-8213/acad81
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