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J/MNRAS/458/3411    Galactic SNR 44Ti survey         (Tsygankov+, 2016)

Galactic survey of 44Ti sources with the IBIS telescope onboard INTEGRAL. Tsygankov S.S., Krivonos R.A., Lutovinov A.A., Revnivtsev M.G., Churazov E.M., Sunyaev R.A., Grebenev S.A. <Mon. Not. R. Astron. Soc., 458, 3411-3419 (2016)> =2016MNRAS.458.3411T (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Gamma rays ; Supernovae Keywords: nuclear reactions, nucleosynthesis, abundances - ISM: supernova remnants - gamma-rays: ISM Abstract: We report the results of the deepest Galactic plane (|b|<17.5°) survey in the 67.9 and 78.4keV nuclear de-excitation lines of titanium-44 (44Ti) performed using the data acquired with the IBIS/ISGRI instrument onboard the INTEGRAL satellite during 12yr of operation. The peak sensitivity of our survey reached an unprecedented level of 4.8x10-6ph/cm2/s (3σ) that improves the sensitivity of the survey done by Compton Gamma-Ray Observatory/COMPTEL by a factor of ∼5. As a result, constraining upper limits for all sources from the catalogue of Galactic supernova remnants (SNRs; Green, 2014, Cat. VII/272) are derived. These upper limits can be used to estimate the exposure needed to detect 44Ti emission from any known SNR using existing and prospective X- and gamma-ray telescopes. Among the youngest Galactic SNRs, only Cas A shows significant 44Ti emission flux in good agreement with the NuSTAR measurements. We did not detect any other sources of titanium emission in the Galactic plane at significance level higher than 5σ confirming previous claims of the rarity of such 44Ti-producing SNRs. Description: The INTEGRAL observatory (Winkler et al., 2003A&A...411L...1W) has demonstrated a great success in surveying the sky in hard X-rays at energies above 20keV. For the current analysis, we utilized all the publicly available data taken until 2014 October (or spacecraft revolution 1469). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 132 294 The complete catalogue of Galactic SNRs (Green, 2014, VII/272) with measured fluxes or 3 sigma upper limits in the 64.6-82.2keV band
See also: VII/272 : A catalogue of Galactic supernova remnants (Green, 2014) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number (1) 5- 7 A3 --- --- [SNR] 9- 19 A11 --- SNR SNR name (GLLL.l+BB.b) 21- 28 F8.3 deg GLON [] Galactic longitude 30- 36 F7.3 deg GLAT Galactic latitude 38 A1 --- l_Flux 3 sigma limit flag on Flux (2) 39- 43 F5.2 10-15W/m2 Flux ? Flux in 64.6-82.2keV band 45- 48 F4.2 10-15W/m2 e_Flux ? rms uncertainty on Flux 50- 54 F5.2 10-15W/m2 Signi ? Significance for detected sources 56-132 A77 --- Notes Notes (3)
Note (1): Catalogue is sorted by source name, which is in turn, based on Galactic coordinates. Note (2): If significance of the detection of such source is above 3 sigma level, an upper limit (3 sigma) in the 78.4keV line is shown assuming a simple power-law continuum model. Note (3): The spatial confusion with a known hard X-ray source (shown in parenthesis) is indicated. SNRs dominated by the continuum flux are marked as well.
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 01-Jun-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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