Swift/BAT monitoring of Fermi/LAT sources
Hans A. Krimm, Scott D. Barthelmy, Neil Gehrels, Jack Tueller, Wayne, H. Baumgartner, Jay R. Cummings, Taka Sakamoto, Edward E. Fenimore, David M., Palmer, Craig B. Markwardt, Gerald K. Skinner, Michael Stamatikos
TL;DR
This paper describes the Swift/BAT hard X-ray transient monitor that tracks over 700 sources, including Fermi LAT objects, providing detection statistics and monitoring capabilities on various time scales.
Contribution
It introduces a monitoring system that tracks Fermi LAT sources in hard X-ray, offering new insights into their detection rates and variability over time.
Findings
Detection statistics before and after Fermi launch
Monitoring of over 700 sources including Fermi LAT objects
Time scales ranging from 20 minutes to one day
Abstract
The Swift Burst Alert Telescope (BAT) hard X-ray transient monitor tracks more than 700 galactic and extragalactic sources on time scales ranging from a single Swift pointing (approximately 20 minutes) to one day. The monitored sources include all objects from the Fermi LAT bright source list which are either identified or which have a 95% error confidence radius of less than eight arc minutes. We report on the detection statistics of these sources in the BAT monitor both before and after the launch of Fermi.
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Taxonomy
TopicsParticle Detector Development and Performance · Astrophysical Phenomena and Observations · Gamma-ray bursts and supernovae