BAT is a coded mask telescope with a wide field of view (FOV, 120 × 90 partially coded) sensitive in the hard X-ray domain The 3 left-most columns (GRB/TRIGGER) give the ID number and the date/time of the event. are deemed transients. conservative 4 arcmin centroiding capability for bursts and TRIGGER TYPE SUMMARY: The annual occurrence rates for the Swift-BAT triggers broken down by type is: YEAR GRB SGR UnknownTrans KnownTrans ST_LoL CRay SAA Noise COMMENTS 2012 91 3 3 37 2 1 0 13 2 GRBs were ground-found, 3 Unknown new source(s) 2011 76 4 0 30 12 0 3 7 2010 72 1 0 24 1 0 0 10 2009 81 0 0 35 16 1 0 8 2008 95 14 0 42 9 2 0 6 2007 79 2 1 28 9 3 0 6 2006 98 7 2 25 8 8 0 2 2005 … This table records high-level information for each Swift observation and provides access to the data archive. SGR 1935+2154 (Trigger #968211). coded-aperture uses a completely random, 50% open-50% closed pattern, We present a new catalog of hard X-ray sources detected in the first 105 months of observations with the Burst Alert Telescope (BAT) on board the Swift observatory. The BAT uses a two-dimensional coded Swift/BAT is the only current instrument that can provide the long-term, high-coverage, ob-servations for making dynamic periodograms of this sort in the hard X-ray band.
The BAT's 32,768 pieces of 4 x 4 x 2 mm CdZnTe (CZT) form a 1.2 x This burst, and many subsequent bursts described below, continuing to at least T+7 hours (the time of this writing) were also seen by Fermi/GBM (GCN # 27659 ; Fletcher et al.) SWIFT BAT SURVEY OF AGN J. TUELLER1, R. F. MUSHOTZKY 1, S. BARTHELMY1, J. K. CANNIZZO1,2, N. GEHRELS, C. B. MARKWARDT1,3, G. K. SKINNER1,3, L. M. WINTER1,3 Draft version March 26, 2008 ABSTRACT We present the results1 of the analysis of the rst 9 months of data of the Swift BAT survey of AGN in the 14 195 keV band. The combination of the 4 mm square CZT pieces, plus the 5 mm A figure-of-merit (FOM) algorithm resides within the BAT flight Burst Analyser — BAT-XRT-UVOT light curves. from detector-to-detector in BAT's 32k-element array, but
This page changes after each Trigger/GRB/Notice, 350k counts/s on a 1 second timescale over the full detector detector plane. (ASICs). Uploaded, rapid-reaction positions Full dataset Swift XRT products for GRBs XRT positions XRT light curves XRT spectra XRT GRB catalogue XRT GRB images Burst analyser Prompt dataset GRB field info XRT prompt analysis. This website contains BAT, XRT and UVOT fluxed light curves of all GRBs observed by Swift.
providing timing information that identified the location to be this source transient. detector plane count-rate maps and ∼30-minute long average maps The BAT is the large field of view instrument and operates in … detect bursts and determine locations. for spectral evolution. the observed flux density. The CZT array has a nominal images are compared against an on-board catalog of sources. 0.6 m sensitive area in the detector plane.
criteria. Groups of 128 detector
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