IHEP OpenIR  > 硬X射线调制望远镜卫星
Diagnostic of the spectral properties of Aquila X-1 by Insight-HXMT snapshots during the early propeller phase
The Insight-HXMT Collaboration
2020
Source PublicationJournal of High Energy Astrophysics
ISSN2214-4048
EISSN2214-4056
Volume25Pages:10-16
SubtypeJournal Article
AbstractWe study the 2018 outburst of Aql X-1 via the monitor of all sky X-ray image (MAXI) data. We show that the outburst starting in February 2018 is a member of short-lowclass in the frame of outburst duration and the peak count rate although the outburst morphology is slightly different from the other fastrise-exponential-decay (FRED) type outbursts with a milder rising stage. We study the partial accretion in the weak propeller stage of Aql X-1 via the MAXI data of the 2018 outburst. We report on the spectral analysis of 3 observations of Aquila X-1 obtained by Insight - hard X-ray modulation telescope (Insight-HXMT) during the late decay stage of the 2018 outburst. We discuss that the data taken by Insight-HXMT is just after the transition to the weak propeller stage. Our analysis shows the necessity of a comptonization component to take into account the existence of an electron cloud resulting photons partly up-scattered. (C) 2019 Elsevier B.V. All rights reserved.
KeywordAccretion Accretion disks Stars: neutron X-rays: binaries X-rays: individuals Aql X-1
DOI10.1016/j.jheap.2019.12.001
WOS KeywordX-RAY BINARIES ; SAX J1808.4-3658 ; DISK ACCRETION ; OUTBURST ; ASTROPHYSICS ; MORPHOLOGY ; BURSTS ; FITS
Indexed BySCI
Correlation强相关
Research Direction科学结果
Member Type核心团队
Language英语
WOS IDWOS:000519994400002
PublisherELSEVIER
ADS Bibcode2020JHEAp..25...10G
ADS URLhttps://ui.adsabs.harvard.edu/abs/2020JHEAp..25...10G
AXRIV CODE1912.08542
inspireid1771601
ItemNoIHEP00030097
Citation statistics
Cited Times:0 [INSPIRE]
Cited Times:1 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/287518
Collection硬X射线调制望远镜卫星
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
The Insight-HXMT Collaboration. Diagnostic of the spectral properties of Aquila X-1 by Insight-HXMT snapshots during the early propeller phase[J]. Journal of High Energy Astrophysics,2020,25:10-16.
APA The Insight-HXMT Collaboration.(2020).Diagnostic of the spectral properties of Aquila X-1 by Insight-HXMT snapshots during the early propeller phase.Journal of High Energy Astrophysics,25,10-16.
MLA The Insight-HXMT Collaboration."Diagnostic of the spectral properties of Aquila X-1 by Insight-HXMT snapshots during the early propeller phase".Journal of High Energy Astrophysics 25(2020):10-16.
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