FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3106152066> ?p ?o ?g. }

• W3106152066 endingPage "241" @default.
• W3106152066 startingPage "225" @default.
• W3106152066 abstract "We present a catalog of 2357 point sources detected during 590 ks of Chandra observations of the 17' × 17' field around Sgr A*. This field encompasses a physical area of 40 × 40 pc at a distance of 8 kpc. The completeness limit of the sample at the Galactic center is 1031 ergs s-1 (2.0-8.0 keV), while the detection limit is an order of magnitude lower. The 281 sources detected below 1.5 keV are mainly in the foreground of the Galactic center, while comparisons to the Chandra deep fields at high Galactic latitudes suggest that only about 100 of the observed sources are background AGNs. The surface density of absorbed sources (not detected below 1.5 keV) falls off as 1/θ away from Sgr A*, in agreement with the distribution of stars in infrared surveys. This demonstrates the X-ray sources trace the general stellar population at the Galactic center. Point sources brighter than our completeness limit produce 10% of the flux previously attributed to diffuse emission. The log N- log S distribution of the Galactic center sources is extremely steep (power-law slope α = 1.7). If this distribution extends down to a flux of 10-17 ergs cm-2 s-1 (1029 ergs s-1 at 8 kpc, 2.0-8.0 keV) with the same slope, then point sources would account for all of the previously reported diffuse emission. However, there are numerous diffuse, filamentary structures in the field that also contribute to the total flux, so the 2.0-8.0 keV luminosity distribution must flatten between 1029 and 1031 ergs s-1. Many types of stellar systems should be present in the field at the luminosities to which we are sensitive. However, the spectra of more than half of the Galactic center sources are very hard and can be described by a power law (E-Γ) with photon index Γ < 1. Such hard spectra have been seen previously only from magnetically accreting white dwarfs (polars and intermediate polars) and wind-accreting neutron stars (pulsars), suggesting that there are large numbers of these systems in our field." @default.
• W3106152066 created "2020-11-23" @default.
• W3106152066 creator A5000917920 @default.
• W3106152066 creator A5022176245 @default.
• W3106152066 creator A5030243019 @default.
• W3106152066 creator A5039899885 @default.
• W3106152066 creator A5054806694 @default.
• W3106152066 creator A5059319698 @default.
• W3106152066 creator A5065761076 @default.
• W3106152066 creator A5067673665 @default.
• W3106152066 creator A5077083852 @default.
• W3106152066 creator A5079654111 @default.
• W3106152066 date "2003-05-20" @default.
• W3106152066 modified "2023-09-28" @default.
• W3106152066 title "A Deep<i>Chandra</i>Catalog of X‐Ray Point Sources toward the Galactic Center" @default.
• W3106152066 cites W1485073943 @default.
• W3106152066 cites W1544698107 @default.
• W3106152066 cites W1565637521 @default.
• W3106152066 cites W1734216322 @default.
• W3106152066 cites W1815496428 @default.
• W3106152066 cites W1953859610 @default.
• W3106152066 cites W1965475736 @default.
• W3106152066 cites W1967950639 @default.
• W3106152066 cites W1969374031 @default.
• W3106152066 cites W1970372891 @default.
• W3106152066 cites W1973440059 @default.
• W3106152066 cites W1973545518 @default.
• W3106152066 cites W1973961020 @default.
• W3106152066 cites W1978691390 @default.
• W3106152066 cites W1981324123 @default.
• W3106152066 cites W1985694766 @default.
• W3106152066 cites W1985942144 @default.
• W3106152066 cites W1989236130 @default.
• W3106152066 cites W1993712502 @default.
• W3106152066 cites W1995610322 @default.
• W3106152066 cites W2006563224 @default.
• W3106152066 cites W2007250714 @default.
• W3106152066 cites W2010993162 @default.
• W3106152066 cites W2012482246 @default.
• W3106152066 cites W2013305727 @default.
• W3106152066 cites W2018165450 @default.
• W3106152066 cites W2018868501 @default.
• W3106152066 cites W2019748881 @default.
• W3106152066 cites W2026818944 @default.
• W3106152066 cites W2028501240 @default.
• W3106152066 cites W2030867565 @default.
• W3106152066 cites W2032372224 @default.
• W3106152066 cites W2034937893 @default.
• W3106152066 cites W2036681339 @default.
• W3106152066 cites W2039720425 @default.
• W3106152066 cites W2045706024 @default.
• W3106152066 cites W2054131667 @default.
• W3106152066 cites W2054482516 @default.
• W3106152066 cites W2059018715 @default.
• W3106152066 cites W2060395666 @default.
• W3106152066 cites W2061575248 @default.
• W3106152066 cites W2067869481 @default.
• W3106152066 cites W2069783346 @default.
• W3106152066 cites W2070229824 @default.
• W3106152066 cites W2071186571 @default.
• W3106152066 cites W2072224418 @default.
• W3106152066 cites W2074173079 @default.
• W3106152066 cites W2075630405 @default.
• W3106152066 cites W2076850419 @default.
• W3106152066 cites W2084394360 @default.
• W3106152066 cites W2085499291 @default.
• W3106152066 cites W2087044161 @default.
• W3106152066 cites W2093388460 @default.
• W3106152066 cites W2098787786 @default.
• W3106152066 cites W2123303158 @default.
• W3106152066 cites W2131076780 @default.
• W3106152066 cites W2149330123 @default.
• W3106152066 cites W2149710854 @default.
• W3106152066 cites W2149957750 @default.
• W3106152066 cites W2168500012 @default.
• W3106152066 cites W2171435808 @default.
• W3106152066 cites W3027815822 @default.
• W3106152066 cites W3033709371 @default.
• W3106152066 cites W3098439506 @default.
• W3106152066 cites W3101112434 @default.
• W3106152066 cites W3102679860 @default.
• W3106152066 cites W3102713754 @default.
• W3106152066 cites W3103471628 @default.
• W3106152066 cites W3105065098 @default.
• W3106152066 cites W3105373160 @default.
• W3106152066 cites W3105403309 @default.
• W3106152066 cites W3105962319 @default.
• W3106152066 cites W3123347293 @default.
• W3106152066 cites W3125630240 @default.
• W3106152066 cites W4206521167 @default.
• W3106152066 cites W4240139671 @default.
• W3106152066 cites W4245147268 @default.
• W3106152066 cites W4245345364 @default.
• W3106152066 cites W4293237181 @default.
• W3106152066 cites W4294932310 @default.
• W3106152066 cites W4300365133 @default.
• W3106152066 doi "https://doi.org/10.1086/374639" @default.
• W3106152066 hasPublicationYear "2003" @default.

• next