1. 1 HETE-II Catalogue Filip Münz and Graziella Pizzichini for HETE team Burst statistics in

2. HETE GRB CatalogueSAIt meeting, Teramo 20082 ► gamma-ray detector French Gamma-ray Telescope (FREGATE): 5-400 keV; ~ π FOV no localization ► position sensitive instruments Wide-Field X-ray Monitor (WXM): 2-25 keV; ~5’-10’ localizations Soft X-ray Cameras (SXC): 2-10 keV; ~40” localizations small eff. surface / sensitivity ► direct alert transmission through simple VHF stations along the equatorial trajectory (incl. Italian base at Malindi) High Energy Transient Experiment – II very small scale mission mass: 123 kg size: 89 x 66 cm (launch size)

3. HETE GRB CatalogueSAIt meeting, Teramo 20083 Alert distribution IASF-BO people E. Morelli F. Gianotti P. Ferrero F. Munz G. Pizzichini equatorial orbit @ 625 km

4. HETE GRB CatalogueSAIt meeting, Teramo 20084 Detector response ► FREGATE  large FoV implies high background (with Earth occultation of sources due to fixed pointing ) ► WXM  extension to lower energies with complicated response matrix (1-D coded masks)

5. HETE GRB CatalogueSAIt meeting, Teramo 20085 HETE bursts and flashes ► 1292 GCN alerts ► 173 bursts ► 143 localized ► (110 within 1 hour)

6. HETE GRB CatalogueSAIt meeting, Teramo 20086 GRB – SN connection (030329) HETE Highlights HETE X-ray (Chandra) optical first short burst OT (050709)

7. HETE GRB CatalogueSAIt meeting, Teramo 20087 HETE catalog completing, verifying, mining …

8. HETE GRB CatalogueSAIt meeting, Teramo 20088 Catalogue structure ► Database (mySQL) with object interface (and web replication )  Numerical Python, Django, JQuery ► light-curve profiles in ASCII/FITS  procedures to load and subtract background Burst (trigger info) Alert (time of distribution) Spectral fits Band (X/gamma) Peak (times,fluence) Literature refer. Afterglow measures GCN notices Position info

9. HETE GRB CatalogueSAIt meeting, Teramo 20089 GRB entry ► All links on one page  to general catalogue  to GCN notices  to literature  custom notices

10. HETE GRB CatalogueSAIt meeting, Teramo 200810 Checking the catalogue ► correlation of different variables (160 entries)  looking for outliers

11. HETE GRB CatalogueSAIt meeting, Teramo 200811 Correlations ► Extension of Amati relation

12. HETE GRB CatalogueSAIt meeting, Teramo 200812 Afterglows Many bursts have good coverage of optical afterglows Many bursts have good coverage of optical afterglows Combining with analysis of prompt lightcurves Combining with analysis of prompt lightcurves

13. HETE GRB CatalogueSAIt meeting, Teramo 200813 Success of followups ► highlights ► GRB 030329B (690/488) ► GRB 021004 (178/123) ► GRB 020813 (77/67) result of ground-obs. friendly (anti-solar) HETE pointing too many bursts in SWIFT era (until 2007)

14. HETE GRB CatalogueSAIt meeting, Teramo 200814 Prompt emission ► FREGATE analysis in 4 spectral bands  time sampling at cca 0.1 s  conversion to physical units using off-axis angle and spectral shape ► spectrum fitted in 69 cases

15. HETE GRB CatalogueSAIt meeting, Teramo 200815 Lightcurve analysis trying to extract more detailed information besides T90/fluence trying to extract more detailed information besides T90/fluence developing methods for identification of peaks developing methods for identification of peaks  rise/fall time  variation of hardness ratio

16. HETE GRB CatalogueSAIt meeting, Teramo 200816 Lightcurve parade

17. HETE GRB CatalogueSAIt meeting, Teramo 200817 Lightcurve analysis Sometimes the main structure comes with considerable delay (no background information after the burst) Sometimes the main structure comes with considerable delay (no background information after the burst)

18. HETE GRB CatalogueSAIt meeting, Teramo 200818 Lightcurve analysis in some cases the baseline level is not evident at all! in some cases the baseline level is not evident at all! aim is to verify the catalogued values and deepen the understanding of X-ray rich events aim is to verify the catalogued values and deepen the understanding of X-ray rich events

19. HETE GRB CatalogueSAIt meeting, Teramo 200819 Work in progress ► make catalogue ready for public  checking outliers  linking the literature  polishing the interface ► prompt emission studies  more detailed statistics  comparison with other datasets (BATSE, Swift) ► need for robust peak-analysis technique ► better pseudo-redshift indicator