Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-04-18
Astronomy and Astrophysics
Astrophysics
27 pages, 11 figures, aastex
Scientific paper
10.1086/309325
The 3rd EGRET Catalog of High-energy Gamma-ray Sources contains 170 unidentified sources, and there is great interest in the nature of these sources. One means of determining source class is the study of flux variability on time scales of days; pulsars are believed to be stable on these time scales while blazars are known to be highly variable. In addition, previous work has demonstrated that 3EG J0241-6103 and 3EG J1837-0606 are candidates for a new gamma-ray source class. These sources near the Galactic plane display transient behavior but cannot be associated with any known blazars. Although many instances of flaring AGN have been reported, the EGRET database has not been systematically searched for occurrences of short-timescale ($\sim1$ day) variability. These considerations have led us to conduct a systematic search for short-term variability in EGRET data, covering all viewing periods through proposal cycle 4. Six 3EG catalog sources are reported here to display variability on short time scales; four of them are unidentified. In addition, three non-catalog variable sources are discussed.
Bertsch David L.
Bloom Steven David
Griffis N. J.
Hartman Robert C.
Kniffen Donald A.
No associations
LandOfFree
A Systematic Search for Short-term Variability of EGRET Sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Systematic Search for Short-term Variability of EGRET Sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Systematic Search for Short-term Variability of EGRET Sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-6572