Matches in SemOpenAlex for { <https://semopenalex.org/work/W4311532307> ?p ?o ?g. }
- W4311532307 endingPage "1348" @default.
- W4311532307 startingPage "1336" @default.
- W4311532307 abstract "Characterising the fast variability in black-hole low-mass X-ray binaries (BHXBs) can help us understand the geometrical and physical nature of the innermost regions of these sources. Particularly, type-B quasi-periodic oscillations (QPOs), observed in BHXBs during the soft-intermediate state (SIMS) of an outburst, are believed to be connected to the ejection of a relativistic jet. The X-ray spectrum of a source in the SIMS is characterised by a dominant soft blackbody-like component - associated with the accretion disc - and a hard component - associated with a Comptonizing region or corona. Strong type-B QPOs were observed by NICER and AstroSat in GX 339$-$4 during its 2021 outburst. We find that the fractional rms spectrum of the QPO remains constant at $sim$1 per cent for energies below $sim$1.8 keV and then increases with increasing energy up to $sim$17 per cent at 20$-$30 keV. We also find that the lag spectrum is U-shaped, decreasing from $sim$1.2 rad at 0.7 keV to 0 rad at $sim$3.5 keV, and increasing again at higher energies up to $sim$0.6 rad at 20$-$30 keV. Using a recently developed time-dependent Comptonization model, we fit simultaneously the fractional rms and lag spectra of the QPO and the time-averaged energy spectrum of GX 339$-$4 to constrain the physical parameters of the region responsible for the variability we observe. We suggest that the radiative properties of the type-B QPOs observed in GX 339$-$4 can be explained by two physically-connected Comptonizing regions that interact with the accretion disc via a feedback loop of X-ray photons." @default.
- W4311532307 created "2022-12-26" @default.
- W4311532307 creator A5017067819 @default.
- W4311532307 creator A5035495162 @default.
- W4311532307 creator A5080174406 @default.
- W4311532307 creator A5091158813 @default.
- W4311532307 date "2022-12-05" @default.
- W4311532307 modified "2023-10-14" @default.
- W4311532307 title "Dual-corona Comptonization model for the type-b quasi-periodic oscillations in GX 339-4" @default.
- W4311532307 cites W1850227395 @default.
- W4311532307 cites W1921946780 @default.
- W4311532307 cites W1969118998 @default.
- W4311532307 cites W1978745084 @default.
- W4311532307 cites W1993155883 @default.
- W4311532307 cites W2001104206 @default.
- W4311532307 cites W2002201591 @default.
- W4311532307 cites W2008281661 @default.
- W4311532307 cites W2017391605 @default.
- W4311532307 cites W2024469391 @default.
- W4311532307 cites W2027018483 @default.
- W4311532307 cites W2035147078 @default.
- W4311532307 cites W2041778085 @default.
- W4311532307 cites W2057250590 @default.
- W4311532307 cites W2067495139 @default.
- W4311532307 cites W2069966468 @default.
- W4311532307 cites W2071237235 @default.
- W4311532307 cites W2081837512 @default.
- W4311532307 cites W2101769690 @default.
- W4311532307 cites W2119932638 @default.
- W4311532307 cites W2120656065 @default.
- W4311532307 cites W2123029255 @default.
- W4311532307 cites W2135642844 @default.
- W4311532307 cites W2144105928 @default.
- W4311532307 cites W2149532224 @default.
- W4311532307 cites W2171203348 @default.
- W4311532307 cites W2286823125 @default.
- W4311532307 cites W2306319903 @default.
- W4311532307 cites W2325436153 @default.
- W4311532307 cites W2346769518 @default.
- W4311532307 cites W2472791862 @default.
- W4311532307 cites W2484752123 @default.
- W4311532307 cites W2530659456 @default.
- W4311532307 cites W2580213977 @default.
- W4311532307 cites W2762960182 @default.
- W4311532307 cites W2952966877 @default.
- W4311532307 cites W2963137984 @default.
- W4311532307 cites W2996280345 @default.
- W4311532307 cites W3005811370 @default.
- W4311532307 cites W3037111496 @default.
- W4311532307 cites W3037624524 @default.
- W4311532307 cites W3097976529 @default.
- W4311532307 cites W3098232186 @default.
- W4311532307 cites W3098302872 @default.
- W4311532307 cites W3098843827 @default.
- W4311532307 cites W3099897412 @default.
- W4311532307 cites W3099985729 @default.
- W4311532307 cites W3100341096 @default.
- W4311532307 cites W3100714185 @default.
- W4311532307 cites W3101388718 @default.
- W4311532307 cites W3101770765 @default.
- W4311532307 cites W3102250239 @default.
- W4311532307 cites W3102369283 @default.
- W4311532307 cites W3103515782 @default.
- W4311532307 cites W3104613640 @default.
- W4311532307 cites W3104686026 @default.
- W4311532307 cites W3105350034 @default.
- W4311532307 cites W3105408434 @default.
- W4311532307 cites W3115292938 @default.
- W4311532307 cites W3134915457 @default.
- W4311532307 cites W3139266627 @default.
- W4311532307 cites W3165725295 @default.
- W4311532307 cites W3179024577 @default.
- W4311532307 cites W4220836227 @default.
- W4311532307 cites W4220953730 @default.
- W4311532307 cites W4225141773 @default.
- W4311532307 cites W4225272228 @default.
- W4311532307 cites W4243196925 @default.
- W4311532307 cites W4286784935 @default.
- W4311532307 doi "https://doi.org/10.1093/mnras/stac3553" @default.
- W4311532307 hasPublicationYear "2022" @default.
- W4311532307 type Work @default.
- W4311532307 citedByCount "10" @default.
- W4311532307 countsByYear W43115323072023 @default.
- W4311532307 crossrefType "journal-article" @default.
- W4311532307 hasAuthorship W4311532307A5017067819 @default.
- W4311532307 hasAuthorship W4311532307A5035495162 @default.
- W4311532307 hasAuthorship W4311532307A5080174406 @default.
- W4311532307 hasAuthorship W4311532307A5091158813 @default.
- W4311532307 hasBestOaLocation W43115323071 @default.
- W4311532307 hasConcept C121332964 @default.
- W4311532307 hasConcept C1276947 @default.
- W4311532307 hasConcept C153385146 @default.
- W4311532307 hasConcept C157909335 @default.
- W4311532307 hasConcept C185544564 @default.
- W4311532307 hasConcept C18903297 @default.
- W4311532307 hasConcept C2776401274 @default.
- W4311532307 hasConcept C2776779350 @default.
- W4311532307 hasConcept C2777299769 @default.