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Gong Talk session 1

P. 02. P. 03. P. 05. P. 06. P. 07. P. 11. P. 13. P. 12. P. 16. P. 19. P. 22. Gong Talk session 1. Monday morning. P. 02. Producing very rapidly rotating massive stars Producing runaway GRBs GRB position in the sky GRB afterglow properties (constant density).

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Gong Talk session 1

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  1. P. 02 P. 03 P. 05 P. 06 P. 07 P. 11 P. 13 P. 12 P. 16 P. 19 P. 22 Gong Talk session 1 Monday morning

  2. P. 02 • Producing very rapidly rotating massive stars • Producing runaway GRBs • GRB position in the sky • GRB afterglow properties (constant density) Binary star progenitors of longgamma-ray bursts M.Cantiello, S.-C.Yoon, N.Langer and M.Livio

  3. P. 03 Low-Luminosity GRB 060218: A Collapsar Jet from a Neutron Star? (astro-ph/0610867) Kenji Toma (Kyoto Univ.), Kunihito Ioka, Takanori Sakamoto (NASA), & Takashi Nakamura The radio AG may be produced by a Newtonian phase of an initially collimated outflow. Jet break! Our BAT & XRT data analysis shows that the prompt non-thermal component might connect to the X-rays detected from 10^4 s. Prompt emission continued? Newtonian phase! XRT flux [erg/s/cm^2] (Campana et al. 2006) Times [s] (Soderberg et al. 2006)

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  5. P. 06 GRB 060505 and GRB060614: Features of a new type of core collapsar or binary compact objects merger? GRB060505 GRB060614 T90: 4+/-1 sec 102+/-5 sec 0.125 Redshift: 0.089 Eiso: ~1.2x10E49 erg (wide jet angle) ~8.4x10E50 erg (tjet~1.2 day) Afterglow light curves: Host: Associated with a star forming region Star-forming rate:~1 Msun/yr Specific star-formation rate: ~4 Msun/yr/L* Delay time: ~10 Myr Associated with a star forming galaxy Star-forming rate:~0.014 Msun/yr Specific star-formation rate: ~2 Msun/yr/L* Delay time: not available Conclusion: The probability of originating from collapse of a massive star is much larger than that from binary Compact objects merger. The progenitor mechanisms are unclear yet, but the current internal-external shock wave model still applicable to interpret the afterglows of this new type of GRBs.

  6. P. 07 Early time fast photometry of GRB060904B Martin Jelinek, S. McBreen, A.J. Castro-Tirado, A. de Ugarte, G. Johannesson, J. Gorosabel, M. Bremer, F.J. Aceituno, S. Guziy F. Hoyos, B. Cobb, P. Kubanek, S. Vitek, R. Cunniffe, L. Sabau-Graziati

  7. P. 11 Flares in GRB 050822 & 051117A FX 050822 Ep HR 051117A FX Strong E_peak changes seen in bright XRT flares in 1st 1000 sec. Similar temporal & spectral behaviour of flares and GRB pulses indicates same origin: internal shocks Γ Ep Julian Osborne, Amsterdam – Mar 2007

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  10. P. 16 The Swift UVOT Burst Catalog: The 1st Two Years Pete Roming, S. Koch, W. Landsman, S. Oates, M. Page, B. Porterfield, D. Vanden Berk

  11. P. 19 The complete Catalogue of GRBs observed by the Wide Field Cameras on board BeppoSAXL. Vetere, P. Soffitta, E. Massaro, P. Giommi, E. Costa Contains: • 77 Total events • 56 triggered onboard www.asdc.asi.it/grb_wfc Provides: • trigger time • duration • coordinates (J2000) • peak flux X (Frontera 2004) • redshift (when available) • lightcurves in 3 energy bands • search through SDC Catalogs

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