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The BATSE search for absorption lines
Authors:D L Band  L A Ford  J L Matteson  D M Palmer  B J Teegarden  M S Briggs  G N Pendleton  R D Preece  W S Paciesas
Institution:(1) CASS, University of California, 92093 San Diego, La Jolla, CA, USA;(2) NASA/GSFC, Code 661, 20770 Greenbelt, MD, USA;(3) University of Alabama at Huntsville, 35899 Huntsville, AL, USA
Abstract:No absorption lines between 15 and 100 keV have been detected in burst spectra accumulated by BATSE. Almost 250 bursts have been inspected visually, and a computerized search has begun. Our simulations show that BATSE could indeed detect lines similar to those observed byGinga in strong bursts, and our tests of the detectors' actual capabilities demonstrate they function as understood. The apparent discrepancy between BATSE andGinga is not yet compelling, and therefore the BATSE nondetections do not invalidate theGinga detections. Nonetheless, the absence of BATSE line detections indicates a low line-occurrence frequency.
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