Background Projects Results On-Orbit Performance of the GLAST Burst Monitor Curran D. Muhlberger (RA) Charles A. Meegan (PI) Cornell University University of Maryland August 8, 2008 Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background What is GLAST? Projects What is GBM? Results What is it Good for? Outline Background 1 What is GLAST? What is GBM? What is it Good for? Projects 2 Results 3 Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background What is GLAST? Projects What is GBM? Results What is it Good for? What is GLAST? Gamma-Ray Large Area Space Telescope Successor to Compton Gamma Ray Observatory Launched Wednesday, June 11, 2008 Two instruments: Large Area Telescope (LAT) GLAST Burst Monitor (GBM) Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background What is GLAST? Projects What is GBM? Results What is it Good for? What is GBM? The GLAST Burst Monitor supports the LAT by detecting and localizing gamma-ray bursts. Digital successor to BATSE 12 NaI detectors 2 BGO detectors (overlap LAT energy range) Extremely large field-of-view Rapid burst notification for robotic telescopes Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background What is GLAST? Projects What is GBM? Results What is it Good for? What is it Good for? Gamma-ray bursts are the most powerful events in the Universe Most gamma-ray sources are still unidentified High energy astronomy can probe fundamental physics Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background Collaboration Support Projects Performance Evaluation Results Operations Support Outline Background 1 2 Projects Collaboration Support Performance Evaluation Operations Support Results 3 Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background Collaboration Support Projects Performance Evaluation Results Operations Support GIOC Display Panel Real-time display wall powered by STK Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background Collaboration Support Projects Performance Evaluation Results Operations Support InterPlanetary Network Comparison of GRB Lightcurves Count Rate [cps] 3000 IPN Software Features 2500 2000 1500 1000 Generate high-res Count Rate [cps] 3000 CTIME 2500 lightcurve from TTE data 2000 1500 1000 Choose detectors to Count Rate [cps] 3000 CSPEC 2500 maximize signal-to-noise 2000 1500 Correctly adjust for leap 1000 -4 -2 0 2 4 6 8 10 12 Time from Trigger [s] seconds and deadtime The InterPlanetary Network Format output for use by uses observations from multiple existing software spacecraft to pinpoint a burst’s location. Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background Collaboration Support Projects Performance Evaluation Results Operations Support Performance Evaluation Software Software Products Parser for Automatic Gain Portable C library for Control diagnostic packets processing Level 1 data Coincidence rate calculator Consistency check for CSPEC, CTIME, and TTE Bug discovery and diagnosis Burst hardness calculator Rate [yr − 1 ] Energy [keV] Timescale [ms] z max 50-300 64 4.5 23.5 50-300 128 4.5 11.8 10-50 64 5.5 0.3 10-50 128 5.5 0.0 ≥ 100 64 5.5 0.3 ≥ 100 128 5.5 0.1 Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background Collaboration Support Projects Performance Evaluation Results Operations Support Operations Support Operations Support Software IOTL parser and report generator IOTL/ATS comparison parser Online database viewers Level 0 files by date Level 1 continuous files Level 1 trigger files Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background Collaboration Support Projects Performance Evaluation Results Operations Support Web Applications Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background Current Status Projects The End Results Outline Background 1 Projects 2 Results 3 Current Status The End Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background Current Status Projects The End Results Results GIOC features functional and Scientists can quickly calculate stylish real-time display burst hardness ratios CSPEC, CTIME, and TTE data GBM team members have web appear to be self-consistent access to pipeline databases Timing bugs discovered and Operators can quickly check diagnosed IOTLs for correctness Trigger algorithm thresholds Future programs can build off of reset knowing expected a high-level C library coincidence rates Everyone learned something IPN to receive custom-formatted new! high-resolution lightcurves Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
Background Current Status Projects The End Results Questions? Curran D. Muhlberger, Charles A. Meegan On-Orbit Performance of the GLAST Burst Monitor
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