The Recent Appearance of a New X-Ray Source in the Southern Sky

1969/09/01 by J. P. Conner, W. D. Evans, R. D. Belian · 6 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Gamma-ray bursts and supernovae

paper · doi:10.1086/180409

openalex publication_date 1969/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11

Abstract

The recent appearance of a strong X-ray source in the southern sky has been observed with detectors aboard two Vela 5 satellites. The satellite data indicate that the source appeared between 2330 U.T. July 6 and 0430 UT. July 9, 1969, and is located at approximately R.A. 14h56m, deci. -32°15'. During the first few days this source increased in strength and then began to decline. At its peak it was more than twice as strong as Sco XR-1 in the energy range 3-12 keV. The spectrum of this source has grown softer continuously since its appearance

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