IHEP OpenIR  > 硬X射线调制望远镜卫星
Super-Eddington Accretion onto the Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124
Tao, Lian; Feng, Hua; Zhang, Shuangnan; Bu, Qingcui; Zhang,Shu; Qu, Jinlu; Zhang, Yue
Source PublicationThe Astrophysical Journal
Volume 873
AbstractWe report on the spectral behavior of the first Galactic ultraluminous X-ray pulsar Swift J0243.6+6124 with NuSTAR observations during its 2017-2018 outburst. At sub-Eddington levels, the source spectrum is characterized by three emission components: from the accretion column, the hot spot, and a broad iron line emission region. When the source is above the Eddington limit, the hot spot temperature increases and the spectrum features two more blackbody components. One blackbody component has a radius of 10-20 km and likely originate from the top of the accretion column. The other one saturates at a blackbody luminosity of (1-2) × 1038 erg s-1, coincident with the Eddington limit of a neutron star. This is consistent with the scenario that super-Eddington accretion onto compact objects will power optically thick outflows and indicates an accretion rate 60-80 times the critical value. This suggests that super-Eddington accretion onto magnetized systems can also power massive winds. At super-Eddington levels, the iron line becomes more significant and blueshifted, and is argued to be associated with the ultrafast wind in the central funnel or jets. This source, if located in external galaxies, will appear like other ultraluminous pulsars.
Keywordaccretion accretion disks magnetic fields pulsars: individual: Swift J0243.6+6124 stars: neutron X-rays: binaries Astrophysics - High Energy Astrophysical Phenomena
Indexed ByADS
ADS Bibcode2019ApJ...873...19T
ADS URLhttps://ui.adsabs.harvard.edu/abs/2019ApJ...873...19T
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2019ApJ...873...19T/citations
Citation statistics
Cited Times:27 [ADS]
Document Type期刊论文
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Tao, Lian,Feng, Hua,Zhang, Shuangnan,et al. Super-Eddington Accretion onto the Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124[J]. The Astrophysical Journal,2019, 873.
APA Tao, Lian.,Feng, Hua.,Zhang, Shuangnan.,Bu, Qingcui.,Zhang,Shu.,...&Zhang, Yue.(2019).Super-Eddington Accretion onto the Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124.The Astrophysical Journal, 873.
MLA Tao, Lian,et al."Super-Eddington Accretion onto the Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124".The Astrophysical Journal  873(2019).
Files in This Item:
File Name/Size DocType Version Access License
224.pdf(779KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tao, Lian]'s Articles
[Feng, Hua]'s Articles
[Zhang, Shuangnan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tao, Lian]'s Articles
[Feng, Hua]'s Articles
[Zhang, Shuangnan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tao, Lian]'s Articles
[Feng, Hua]'s Articles
[Zhang, Shuangnan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.