id:"swepub:oai:DiVA.org:kth-288674"
Sökning: id:"swepub:oai:DiVA.org:kth-288674" > AstroSat observatio...
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
AstroSat observations of the first Galactic ULX pulsar Swift J0243.6+6124
-
- Beri, Aru (författare)
- Indian Inst Sci Educ & Res IISER, DST INSPIRE Fac, Mohali 140306, Punjab, India.;Univ Southampton, Phys & Astron, Southampton SO17 1BJ, Hants, England.
-
- Naik, Sachindra (författare)
- Phys Res Lab, Astron & Astrophys Div, Ahmadabad 380009, Gujarat, India.
-
- Singh, Kulinder Pal (författare)
- Indian Inst Sci Educ & Res IISER, DST INSPIRE Fac, Mohali 140306, Punjab, India.
- visa fler...
- visa färre...
- Indian Inst Sci Educ & Res IISER, DST INSPIRE Fac, Mohali 140306, Punjab, India;Univ Southampton, Phys & Astron, Southampton SO17 1BJ, Hants, England. Phys Res Lab, Astron & Astrophys Div, Ahmadabad 380009, Gujarat, India. (creator_code:org_t)
- 2020-10-21
- 2021
- Engelska.
- Ingår i: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 500:1, s. 565-575
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Swift J0243.6+6124, the first Galactic ultraluminous X-ray pulsar, was observed during its 2017-2018 outburst with AstroSat at both sub- and super-Eddington levels of accretionwith X-ray luminosities of L-X similar to 7x10(37) and 6x10(38) erg s(-1), respectively. Our broad-band timing and spectral observations show that X-ray pulsations at similar to 9.85 s have been detected up to 150 keV when the source was accreting at the super-Eddington level. The pulse profiles are a strong function of both energy and source luminosity, showing a double-peaked profile with pulse fraction increasing from similar to 10 per cent at 1.65 keV to 40-80 per cent at 70 keV. The continuum X-ray spectra are well modelled with a high-energy cut-off power law (Gamma similar to 0.6-0.7) and one or two blackbody components with temperatures of similar to 0.35 and 1.2 keV, depending on the accretion level. No iron line emission is observed at sub-Eddington level, while a broad emission feature at around 6.9 keV is observed at the super-Eddington level, along with a blackbody radius (121-142 km) that indicates the presence of optically thick outflows.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- pulsars: individual: (Swift J0243.6+6124)
- X-rays: binaries
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
- Monthly notices of the Royal Astronomical Society (Sök värdpublikationen i LIBRIS)
Till lärosätets databas
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
Hitta mer i SwePub
- Av författaren/redakt...
- Beri, Aru
- Naik, Sachindra
- Singh, Kulinder ...
- Jaisawal, Gaurav ...
- Bhattacharyya, S ...
- Charles, Philip
- visa fler...
- Ho, Wynn C. G.
- Maitra, Chandrey ...
- Bhattacharya, Di ...
- Dewangan, Gulab ...
- Middleton, Matth ...
- Altamirano, Dieg ...
- Gandhi, Poshak
- Raichur, Harsha
- visa färre...
- Om ämnet
-
- NATURVETENSKAP
- NATURVETENSKAP
- och Fysik
- Artiklar i publikationen
- Monthly notices ...
- Av lärosätet
- Kungliga Tekniska Högskolan
- Stockholms universitet
Sök utanför SwePub
- Sök vidare i:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - Nationella bibliotekssystem
- LIBRIS.kb.se
