FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2146144275> ?p ?o ?g. }

• W2146144275 abstract "The existence of black holes of masses ~ 10^2-10^5 Msun has important implications for the formation and evolution of star clusters and supermassive black holes. One of the strongest candidates to date is the hyperluminous X-ray source HLX1, possibly located in the S0-a galaxy ESO243-49, but the lack of an identifiable optical counterpart had hampered its interpretation. Using the Magellan telescope, we have discovered an unresolved optical source with R = (23.80 +/- 0.25) mag and V = (24.5 +/- 0.3) mag within HLX1's positional error circle. This implies an average X-ray/optical flux ratio ~ 500. Taking the same distance as ESO243-49, we obtain an intrinsic brightness M_R = (-11.0 +/- 0.3) mag, comparable to that of a massive globular cluster. Alternatively, the optical source is consistent with a main-sequence M star in the Galactic halo (for example an M4.4 star at ~ 2.5 kpc). We also examined the properties of ESO243-49 by combining Swift/UVOT observations with stellar population modelling. We found that the overall emission is dominated by a ~5 Gyr old stellar population, but the UV emission at ~2000 Ang is mostly due to ongoing star-formation at a rate of ~ 0.03 Msun/yr. The UV emission is more intense (at least a 9-sigma enhancement above the mean) North East of the nucleus, in the same quadrant as HLX1. With the combined optical and X-ray measurements, we put constraints on the nature of HLX1. We rule out a foreground star and a background AGN. Two alternative scenarios are still viable. HLX1 could be an accreting intermediate-mass black hole in a star cluster, which may itself be the stripped nucleus of a dwarf galaxy that passed through ESO243-49, an event which might have caused the current episode of star formation. Or, it could be a neutron star in the Galactic halo, accreting from an M4-M5 donor star." @default.
• W2146144275 created "2016-06-24" @default.
• W2146144275 creator A5001510390 @default.
• W2146144275 creator A5002708493 @default.
• W2146144275 creator A5015092797 @default.
• W2146144275 creator A5015976220 @default.
• W2146144275 creator A5034388424 @default.
• W2146144275 creator A5043358107 @default.
• W2146144275 creator A5057512266 @default.
• W2146144275 creator A5073680720 @default.
• W2146144275 date "2010-04-01" @default.
• W2146144275 modified "2023-10-16" @default.
• W2146144275 title "Discovery of an optical counterpart to the hyperluminous X-ray source in ESO 243-49" @default.
• W2146144275 cites W1802130062 @default.
• W2146144275 cites W1890522558 @default.
• W2146144275 cites W1942421594 @default.
• W2146144275 cites W1977796024 @default.
• W2146144275 cites W1979503956 @default.
• W2146144275 cites W1988016309 @default.
• W2146144275 cites W1988123625 @default.
• W2146144275 cites W1990554638 @default.
• W2146144275 cites W1998148875 @default.
• W2146144275 cites W2011334526 @default.
• W2146144275 cites W2025155866 @default.
• W2146144275 cites W2032383398 @default.
• W2146144275 cites W2048931082 @default.
• W2146144275 cites W2049782901 @default.
• W2146144275 cites W2055832107 @default.
• W2146144275 cites W2062215462 @default.
• W2146144275 cites W2063592995 @default.
• W2146144275 cites W2066406099 @default.
• W2146144275 cites W2068679152 @default.
• W2146144275 cites W2070304421 @default.
• W2146144275 cites W2073105590 @default.
• W2146144275 cites W2083669125 @default.
• W2146144275 cites W2089780396 @default.
• W2146144275 cites W2108596190 @default.
• W2146144275 cites W2111817932 @default.
• W2146144275 cites W2115767518 @default.
• W2146144275 cites W2117138716 @default.
• W2146144275 cites W2119294917 @default.
• W2146144275 cites W2124789373 @default.
• W2146144275 cites W2134770831 @default.
• W2146144275 cites W2135503860 @default.
• W2146144275 cites W2139187938 @default.
• W2146144275 cites W2160082457 @default.
• W2146144275 cites W3098538645 @default.
• W2146144275 cites W3098821728 @default.
• W2146144275 cites W3101105114 @default.
• W2146144275 cites W3101557043 @default.
• W2146144275 cites W3101982976 @default.
• W2146144275 cites W3102763025 @default.
• W2146144275 cites W3103385168 @default.
• W2146144275 cites W3103626395 @default.
• W2146144275 cites W3104416848 @default.
• W2146144275 cites W3104756742 @default.
• W2146144275 cites W3105322792 @default.
• W2146144275 cites W3105396007 @default.
• W2146144275 cites W3105463922 @default.
• W2146144275 cites W3106358537 @default.
• W2146144275 cites W3166554277 @default.
• W2146144275 doi "https://doi.org/10.1111/j.1365-2966.2010.16517.x" @default.
• W2146144275 hasPublicationYear "2010" @default.
• W2146144275 type Work @default.
• W2146144275 sameAs 2146144275 @default.
• W2146144275 citedByCount "22" @default.
• W2146144275 countsByYear W21461442752012 @default.
• W2146144275 countsByYear W21461442752013 @default.
• W2146144275 countsByYear W21461442752014 @default.
• W2146144275 countsByYear W21461442752015 @default.
• W2146144275 countsByYear W21461442752016 @default.
• W2146144275 countsByYear W21461442752018 @default.
• W2146144275 countsByYear W21461442752019 @default.
• W2146144275 countsByYear W21461442752021 @default.
• W2146144275 countsByYear W21461442752022 @default.
• W2146144275 crossrefType "journal-article" @default.
• W2146144275 hasAuthorship W2146144275A5001510390 @default.
• W2146144275 hasAuthorship W2146144275A5002708493 @default.
• W2146144275 hasAuthorship W2146144275A5015092797 @default.
• W2146144275 hasAuthorship W2146144275A5015976220 @default.
• W2146144275 hasAuthorship W2146144275A5034388424 @default.
• W2146144275 hasAuthorship W2146144275A5043358107 @default.
• W2146144275 hasAuthorship W2146144275A5057512266 @default.
• W2146144275 hasAuthorship W2146144275A5073680720 @default.
• W2146144275 hasBestOaLocation W21461442752 @default.
• W2146144275 hasConcept C113461152 @default.
• W2146144275 hasConcept C121332964 @default.
• W2146144275 hasConcept C125245961 @default.
• W2146144275 hasConcept C125857072 @default.
• W2146144275 hasConcept C1276947 @default.
• W2146144275 hasConcept C144024400 @default.
• W2146144275 hasConcept C149923435 @default.
• W2146144275 hasConcept C173120059 @default.
• W2146144275 hasConcept C184665706 @default.
• W2146144275 hasConcept C2778623024 @default.
• W2146144275 hasConcept C2908647359 @default.
• W2146144275 hasConcept C44870925 @default.
• W2146144275 hasConcept C98444146 @default.
• W2146144275 hasConceptScore W2146144275C113461152 @default.
• W2146144275 hasConceptScore W2146144275C121332964 @default.

• next