SIMBAD references

1996A&AS..120C.249B - Astron. Astrophys., Suppl. Ser., 120C, 249-250 (1996/December-3)

A persistent hard X-ray source observed in the Terzan 1 globular cluster by the SIGMA telescope.

BORREL V., BOUCHET L., JOURDAIN E., ROQUES J.P., VARGAS M., GOLDWURM A., DENIS M., PAUL J., CHURAZOV E., GILFANOV M., FINOGUENOV A., SUNYAEV R., DYACHKOV A., KHAVENSON N., CHULKOV I. and NOVIKOV B.

Abstract (from CDS):

A persistent hard X-ray emission has been observed by the SIGMA telescope in the Terzan 1 globular cluster. The photon spectrum is reproduced by a power law with spectral index equal to -3.2±0.7. The luminosity calculated in the 40-75keV energy range assuming a distance of 10kpc is equal to (4±0.8) 1035erg/s. This source is already known as an X-ray burster and has been studied by HEAO1, SL2-XRT, Exosat, Rosat and ART-P and it may be a LMXB with a neutron star as the compact member.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: individual: Terzan 1 - gamma-rays: observations

CDS comments: Special Issue "3rd Compton Symposium"

Simbad objects: 1

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