OSSE detection of the low mass X-ray binary GS 1826-24.

Details OSSE detection of the low mass X-ray binary GS 1826-24. OSSE detection of the low mass X-ray binary GS 1826-24.

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26as..120c.217s&link_type=abstract

Astronomy and Astrophysics Supplement, v.120, p.217-220

Astronomy and Astrophysics

Astrophysics

21

X-Rays: Stars, Stars: Individual: Gs 1826-24 (Ginga 1826-24), Stars: Neutron

Scientific paper

During November 1994, the OSSE instrument on board CGRO observed the low-mass X-ray binary GS 1826-24. This source has been previously detected by Ginga and TTM, but has not been reported in the OSSE band. During this observation, OSSE detected this source at approximately 7 standard deviations significance. The resulting spectrum, after subtracting an estimate of the galactic diffuse emission contribution, is consistent with a power law with photon index ~-3. Fit together with the Ginga spectrum, the source can be represented by an exponentially cutoff power law with a reflection term. The observed cutoff energy (~58keV) may indicate that GS 1826-24 is a neutron star system rather than a black hole candidate as previously thought.

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