TO: All GCN Notice recipients RE: Fermi-GBM Lightcurves added DT: 23 Apr 2014 INTRODUCTION: The GCN system has been modified to incorporate the distribution lightcurves for Fermi-GBM triggers. Link information has been added to the full-format form of the email notices, the 160-byte binary socket packets, and to the various forms of VOEvents. (Note that this announcement is for the GBM Lightcurve data product and not for the just-announced GBM Localization data product. The localization product is still being worked within GCN and will be available in a few days.) WHICH NOTICES and AVAILABILITY DELAY: These lightcurve URLs are included in the notice types listed in the table below: TYPE PKT_NUM DELAY [min] ================== ======= =========== GBM_ALERT 110 10-15 min GBM_FLT_POS 111 10-15 min GBM_GND_POS 112 9-14 min GBM_FIN_POS 115 0 min where the "DELAY" is the time between the issuing of that particular notice type in the sequence of notice types for each trigger and the availability of the lightcurve product, ie by the time that the FINAL_POSITION notice type is issued, the file for the lightcurve should already be on the website. These delays assume the only latency is the downlink of the data that make up the lightcurve. There may be additional latency in posting the data, and the delays listed below should be considered a lower limit. THE LIGHTCURVE URL: The url included in the email is of the form: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/20YY/bnYYMMDDFFF/quicklook/glg_lc_medres34_bnYYMMDDFFF.gif and here is a real example (the YY, YYMMDDFFF parts have been replaced with real values): http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140404030/quicklook/glg_lc_medres34_bn140404030.gif Once this string is built, then you can use the 'wget' command (or similar) to retrieve the lightcurve file: wget http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140404030/quicklook/glg_lc_medres34_bn140404030.gif OTHER LIGHTCURVES ARE ALSO AVAILABLE: Besides the "middle resolution, energy bands 3 & 4" (medres34) lightcurve, there are also 14 other forms of the lightcurve (in various time binnings and various energy bands) that are automatically produced by the GBM Team and posted on the website for retrieval: glg_lc_all_bn140404030.gif glg_lc_chan12_bn140404030.pdf glg_lc_chan34_bn140404030.pdf glg_lc_chan567_bn140404030.pdf glg_lc_chantot_bn140404030.pdf glg_lc_hires12_bn140404030.gif glg_lc_hires34_bn140404030.gif glg_lc_hires567_bn140404030.gif glg_lc_lores12_bn140404030.gif glg_lc_lores34_bn140404030.gif glg_lc_lores567_bn140404030.gif glg_lc_medres12_bn140404030.gif glg_lc_medres34_bn140404030.gif glg_lc_medres567_bn140404030.gif glg_lc_tot_bn140404030.pdf There is also a readme file explaining the contents of each of these data products: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140404030/quicklook/README ACTION ITEM: There is no action needed on your part. If you are already receiving any of these 4 Fermi-GBM notice types, then the lightcurve link information is already included in what you are receiving. (Of course, you can always change your configuration to enable or disable any of these Fermi-GBM notice types. And you can make any other changes to your configuration.) MORE INFORMATION: Can be found at: http://gcn.gsfc.nasa.gov/gcn/fermi.html NOTICE EXAMPLE: Here are examples of a full-format email Fermi-GBM_FLT_POS: ///////////////////////// Fermi-GBM e-mail format ////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Fri 04 Apr 14 00:43:50 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 44 TRIGGER_NUM: 418265009 GRB_RA: 62.283d {+04h 09m 08s} (J2000), 62.893d {+04h 11m 34s} (current), 60.177d {+04h 00m 42s} (1950) GRB_DEC: +80.617d {+80d 37' 00"} (J2000), +80.653d {+80d 39' 12"} (current), +80.483d {+80d 28' 58"} (1950) GRB_ERROR: 27.95 [deg radius, statistical plus systematic] GRB_INTEN: 49 [cnts/sec] DATA_SIGNIF: 4.90 [sigma] INTEG_TIME: 4.096 [sec] GRB_DATE: 16751 TJD; 94 DOY; 14/04/04 GRB_TIME: 2606.09 SOD {00:43:26.09} UT GRB_PHI: 220.00 [deg] GRB_THETA: 15.00 [deg] DATA_TIME_SCALE: 4.0960 [sec] HARD_RATIO: 1.33 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 95% GRB 2nd_MOST_LIKELY: 1% Generic SGR DETECTORS: 0,0,0, 0,0,0, 1,1,0, 0,0,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140404030/quicklook/glg_lc_medres34_bn140404030.gif SUN_POSTN: 13.05d {+00h 52m 12s} +5.59d {+05d 35' 27"} SUN_DIST: 78.44 [deg] Sun_angle= -3.3 [hr] (East of Sun) MOON_POSTN: 65.69d {+04h 22m 46s} +18.20d {+18d 12' 00"} MOON_DIST: 62.47 [deg] MOON_ILLUM: 20 [%] GAL_COORDS: 130.55, 20.82 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 81.78, 57.97 [deg] ecliptic lon,lat of the burst (or transient) COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 241.88,20.03 [deg] COMMENTS: This Notice was ground-generated -- not flight-generated. COMMENTS: The URL_LC file will not be created until ~15 min after the trigger. //////////////////////////////////////////////////////////////////////////// The socket packets contents can be found at: http://gcn.gsfc.nasa.gov/gcn/sock_pkt_def_doc.html The YYMMDD is stored in slot 31, and the fraction-of-day FFF is stored in slot 32. REMINDER OF RECENT ADDITIONS TO GCN: In case you have missed them, here is a brief list of the most recent additions to the GCN system. You might consider signing up for these Notice types as well. The full announcements/descriptions for each of these can be found at: http://gcn.gsfc.nasa.gov/gcn/whats_new.html FERMI_LAT_OFFLINE (Feb 2014) // LAT detections found in off-line ground processing SUZAKU_LIGHTCURVE (Nov 2013) // Lightcurves from Suzaku-WAM IPN_RAW resumes (Aug 2012) // IPN Team resumes producing the IPN_RAW notices SWIFT_BAT_SUB_SUB_THRESHOLD (May 2012) // Swift-BAT Triggers with very low significance; use for temporal coincidences VOEvent Direct Server (Mar 2012) // Added 3 VOEvent servers to allow for direct distribution of VOEvents FERMI_LAT_MON/_TRANS (Aug 2011) // Flare-ups from known sources monitored by Fermi-LAT & non-GRB transients FERMI_LAT_GND (Aug 2011) // Automated ground processing to get GRB positions MOA (Aug 2011) // Locations of up-coming gravitational lensing events DOW_TOD (Jun 2011) // Preprogrammed notices at specific days-of-week & time-of-day FERMI_GBM FIN_POS (Jun 2011) // Human-in-the-loop ground-based analysis MAXI_UNKNOWN/_KNOWN (Apr 2011) // Unknown transients & Flare-ups from Known sources INTEGRAL_WEAK (Feb 2011) // Subthreshold detections by INTEGRAL SWIFT_BAT_MONITOR (Feb 2010) // Flare-ups from known sources monitored by Swift-BAT Sincerely, Scott Scott Barthelmy NASA-GSFC, Code 661, Greenbelt, MD 20771 PHONE: 301-286-3106 (office) CELL: 301-346-3733 EMAIL: scott@lheamail.gsfc.nasa.gov PAGER: 3013463733@cingularme.com WEB: http://gcn.gsfc.nasa.gov/gcn