FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2149606617> ?p ?o ?g. }

• W2149606617 endingPage "13" @default.
• W2149606617 startingPage "1" @default.
• W2149606617 abstract "We present an analysis of the bright X-ray binary 4U 1820-30, thet is based mainly on XMM-Newton-RGS data, in addition to complementary data from XMM-Newton-EPIC-pn, INTEGRAL, and Chandra-HETG, to investigate different aspects of the source. The broad band continuum is fitted well by a classical combination of black body and Comptonized emission. The continuum shape and the high flux of the source (L/LEdd ∼ 0.16) are consistent with a “high state” of the source. We do not find any significant evidence of iron emission at energies ≥6.4 keV. The soft X-ray spectrum contain a number of absorption features. Here we focus on the cold and mildly ionized gas. The neutral gas column density is NH ∼ 1.63 × 10 21 cm −2 . The detailed study of the oxygen and iron edge reveals that those elements are depleted, which is defined here as the ratio of the dust to the total ISM cold phase, by a factor 0.20 ± 0.02 and 0.87 ± 0.14, respectively. Using the available dust models, the best-fit points to a major contribution of Mg-rich silicates, with metallic iron inclusion. Although we find that a large fraction of Fe is in dust form, the fit shows that Fe-rich silicates are unlikely to be present. The measured Mg:Fe ratio is 2.0 ± 0.3. Interestingly, this modeling may provide additional support for a well studied dust constituent (GEMS), which is sometimes proposed as a silicate constituent in our Galaxy. Oxygen and iron are found to be slightly over- and under-abundant, respectively (1.23 and 0.85 times the solar value), along this line of sight. We also report the detection of two absorption lines, which are tentatively identified as part of an outflow of mildly ionized gas (ξ ∼− 0.5) at a velocity of ∼1200 km s −1 ." @default.
• W2149606617 created "2016-06-24" @default.
• W2149606617 creator A5007006031 @default.
• W2149606617 creator A5008070377 @default.
• W2149606617 creator A5017067819 @default.
• W2149606617 creator A5034532818 @default.
• W2149606617 creator A5044156949 @default.
• W2149606617 creator A5062537907 @default.
• W2149606617 creator A5065737480 @default.
• W2149606617 creator A5068988311 @default.
• W2149606617 creator A5072578156 @default.
• W2149606617 date "2012-03-01" @default.
• W2149606617 modified "2023-10-14" @default.
• W2149606617 title "XMM-Newton observation of 4U 1820-30: broad band spectrum and the contribution of the cold interstellar medium" @default.
• W2149606617 cites W1552027881 @default.
• W2149606617 cites W1615124923 @default.
• W2149606617 cites W1637430848 @default.
• W2149606617 cites W1972565152 @default.
• W2149606617 cites W1973454875 @default.
• W2149606617 cites W1974584316 @default.
• W2149606617 cites W1977457396 @default.
• W2149606617 cites W1979427526 @default.
• W2149606617 cites W1979610917 @default.
• W2149606617 cites W1982017213 @default.
• W2149606617 cites W1982261386 @default.
• W2149606617 cites W1983763252 @default.
• W2149606617 cites W1983850825 @default.
• W2149606617 cites W1988131330 @default.
• W2149606617 cites W1988538716 @default.
• W2149606617 cites W1994292981 @default.
• W2149606617 cites W1997646101 @default.
• W2149606617 cites W2004118815 @default.
• W2149606617 cites W2006895596 @default.
• W2149606617 cites W2012816735 @default.
• W2149606617 cites W2014475710 @default.
• W2149606617 cites W2014904361 @default.
• W2149606617 cites W2016309677 @default.
• W2149606617 cites W2024166666 @default.
• W2149606617 cites W2033785212 @default.
• W2149606617 cites W2034608771 @default.
• W2149606617 cites W2040617119 @default.
• W2149606617 cites W2040742691 @default.
• W2149606617 cites W2041504251 @default.
• W2149606617 cites W2046212355 @default.
• W2149606617 cites W2048703889 @default.
• W2149606617 cites W2050232924 @default.
• W2149606617 cites W2050519352 @default.
• W2149606617 cites W2052926897 @default.
• W2149606617 cites W2057234589 @default.
• W2149606617 cites W2057289115 @default.
• W2149606617 cites W2060219161 @default.
• W2149606617 cites W2064005765 @default.
• W2149606617 cites W2075237489 @default.
• W2149606617 cites W2078500152 @default.
• W2149606617 cites W2084087407 @default.
• W2149606617 cites W2087854013 @default.
• W2149606617 cites W2097548891 @default.
• W2149606617 cites W2105903052 @default.
• W2149606617 cites W2109824400 @default.
• W2149606617 cites W2119384716 @default.
• W2149606617 cites W2123924478 @default.
• W2149606617 cites W2127565670 @default.
• W2149606617 cites W2128422918 @default.
• W2149606617 cites W2137918837 @default.
• W2149606617 cites W2147476946 @default.
• W2149606617 cites W2154078330 @default.
• W2149606617 cites W2159261874 @default.
• W2149606617 cites W2167884098 @default.
• W2149606617 cites W2169620320 @default.
• W2149606617 cites W3099736969 @default.
• W2149606617 cites W3101031404 @default.
• W2149606617 cites W38267856 @default.
• W2149606617 cites W2054368225 @default.
• W2149606617 hasPublicationYear "2012" @default.
• W2149606617 type Work @default.
• W2149606617 sameAs 2149606617 @default.
• W2149606617 citedByCount "7" @default.
• W2149606617 countsByYear W21496066172012 @default.
• W2149606617 countsByYear W21496066172015 @default.
• W2149606617 countsByYear W21496066172017 @default.
• W2149606617 countsByYear W21496066172019 @default.
• W2149606617 crossrefType "journal-article" @default.
• W2149606617 hasAuthorship W2149606617A5007006031 @default.
• W2149606617 hasAuthorship W2149606617A5008070377 @default.
• W2149606617 hasAuthorship W2149606617A5017067819 @default.
• W2149606617 hasAuthorship W2149606617A5034532818 @default.
• W2149606617 hasAuthorship W2149606617A5044156949 @default.
• W2149606617 hasAuthorship W2149606617A5062537907 @default.
• W2149606617 hasAuthorship W2149606617A5065737480 @default.
• W2149606617 hasAuthorship W2149606617A5068988311 @default.
• W2149606617 hasAuthorship W2149606617A5072578156 @default.
• W2149606617 hasConcept C115519274 @default.
• W2149606617 hasConcept C121332964 @default.
• W2149606617 hasConcept C124952713 @default.
• W2149606617 hasConcept C1276947 @default.
• W2149606617 hasConcept C142362112 @default.
• W2149606617 hasConcept C145148216 @default.
• W2149606617 hasConcept C191897082 @default.

• next