Network synthesis localization of two soft gamma repeaters

Details Network synthesis localization of two soft gamma repeaters Network synthesis localization of two soft gamma repeaters

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...431l..31h&link_type=abstract

The Astrophysical Journal, Part 2 - Letters, vol. 431, no. 1, p. L31-L34

Astronomy and Astrophysics

Astronomy

47

Gamma Ray Astronomy, Gamma Ray Bursts, Magellanic Clouds, Neutron Stars, Supernovae, Energy Spectra, Network Synthesis, Spatial Distribution, Stellar Luminosity, Ulysses Mission

Scientific paper

We introduce the method of 'network synthesis,' which allows the detection of very weak gamma-ray transient signals in the data of the Ulysses gamma-ray burst (GRB) experiment from repeating sources. It consists of defining a grid of alpha, delta values, and for each BATSE detection of a burst from a soft gamma repeater, predicting the arrival time of the burst at Ulysses and co-adding the Ulysses data rephased so that the burst signals are aligned in time and produce a detectable pulse. We demonstrate that this method identifies the position of the soft repeater SGR 1806-20, and apply it to the repeater B1900+14. We show that the counterpart to this burst source is probably in or in the vicinity of the Galactic supernova remnant G42.8+0.6.

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