Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/32244
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Liu, Jiren | en_US |
dc.contributor.author | Ji, Long | en_US |
dc.contributor.author | Jenke, Peter A. | en_US |
dc.contributor.author | Doroshenko, Victor | en_US |
dc.contributor.author | Liao, Zhenxuan | en_US |
dc.contributor.author | Li, Xiaobo | en_US |
dc.contributor.author | Zhang, Shuangnan | en_US |
dc.contributor.author | ORLANDINI, MAURO | en_US |
dc.contributor.author | Ge, Mingyu | en_US |
dc.contributor.author | Zhang, Shu | en_US |
dc.contributor.author | Santangelo, Andrea | en_US |
dc.date.accessioned | 2022-06-08T14:55:08Z | - |
dc.date.available | 2022-06-08T14:55:08Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32244 | - |
dc.description.abstract | GX 301-2 provides a rare opportunity to study both disc and wind accretion in a same target. We report Insight-Hard X-ray Modulation Telescope observations of the spin-up event of GX 301-2 that happened in 2019 and compare with those of wind-fed state. The pulse profiles of the initial rapid spin-up period are dominated by one main peak, while those of the later slow spin-up period are composed of two similar peaks, as those of wind-fed state. These behaviours are confirmed by Fermi/Gamma-ray Burst Monitor data, which also show that during the rapid spin-up period, the main peak increases with luminosity up to 8 × 10<SUP>37</SUP> erg s<SUP>-1</SUP>, but the faint peak remains almost constant. The absorption column densities during the spin-up period are ~1.5 × 10<SUP>23</SUP> cm<SUP>-2</SUP>, much less than those of wind-fed state at similar luminosity (~9 × 10<SUP>23</SUP> cm<SUP>-2</SUP>), supporting the scenario that most of material is condensed into a disc during the spin-up period. We discuss possible differences between disc and wind accretion that may explain the observed different trends of pulse profiles. | en_US |
dc.language.iso | eng | en_US |
dc.title | Disc versus wind accretion in X-ray pulsar GX 301-2 | en_US |
dc.identifier.doi | 10.1093/mnras/stab938 | en_US |
dc.identifier.scopus | 2-s2.0-85107987519 | en_US |
dc.identifier.isi | 000659453800064 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/504/2/2493/6211000 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 504 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 2493 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 11 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | DEU | en_US |
dc.contributor.country | CHN | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.identifier.adsbibcode | 2021MNRAS.504.2493L | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_10 High energy and particle astronomy – X-rays, cosmic rays, gamma rays, neutrinos | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0003-0946-3151 | - |
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