E-viri
Recenzirano
Odprti dostop
-
Long, Xiangyun; Feng, Hua; Li, Hong; Kong, Ling-Da; Heyl, Jeremy; Ji, Long; Tao, Lian; Muleri, Fabio; Wu, Qiong; Zhu, Jiahuan; Huang, Jiahui; Minuti, Massimo; Jiang, Weichun; Citraro, Saverio; Nasimi, Hikmat; Yu, Jiandong; Jin, Ge; Zeng, Ming; An, Peng; Baldini, Luca; Bellazzini, Ronaldo; Brez, Alessandro; Latronico, Luca; Sgrò, Carmelo; Spandre, Gloria; Pinchera, Michele; Soffitta, Paolo; Costa, Enrico
Astrophysical journal/The Astrophysical journal, 06/2023, Letnik: 950, Številka: 2Journal Article
Abstract The X-ray pulsar 1A 0535+262 exhibited a giant outburst in 2020, offering us a unique opportunity for X-ray polarimetry of an accreting pulsar in the supercritical state. Measurement with PolarLight yielded a nondetection in 3–8 keV; the 99% upper limit of the polarization fraction (PF) is found to be 0.34 averaged over spin phases, or 0.51 based on the rotating vector model. No useful constraint can be placed with phase-resolved polarimetry. These upper limits are lower than a previous theoretical prediction of 0.6–0.8, but consistent with those found in other accreting pulsars, like Her X-1, Cen X-3, 4U 1626−67, and GRO J1008−57, which were in the subcritical state, or at least not confidently in the supercritical state, during the polarization measurements. Our results suggest that the relatively low PF seen in accreting pulsars cannot be attributed to the source not being in the supercritical state, but could be a general feature.
Avtor
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.