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Hot Relics in GRB Photosphere and GeV Photon Delay

Hot Relics in GRB Photosphere and GeV Photon Delay. Kunihito Ioka (KEK). Contents. Very High Lorentz Factor (VHLF) G max can be up to ~10 6 (> G max, conv ~10 3 ) Internal Shock Synchrotron ⇒ Power-law component over >7 decades

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Hot Relics in GRB Photosphere and GeV Photon Delay

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  1. Hot Relics in GRB Photosphere and GeV Photon Delay KunihitoIoka (KEK)

  2. Contents • Very High Lorentz Factor (VHLF)Gmax can be up to ~106 (> Gmax,conv~103) • Internal Shock Synchrotron⇒ Power-law component over >7 decades • ctdelay ~ Baryon Load Radius~ Progenitor Radius ~ 1010cm • Neutrino – GeVg Anti-Correlation

  3. Fermi Revolution GeV onset delay gg→e+e- ⇒ G>103 MeV GeV ~1 sec Abdo+ 09 Ohno’s talk

  4. Fermi Revolution Band component + Power Law keV GeV Hurley+94 Gonzaletz+03 Abdo+ 09 Ohno’s talk GRB 090510 GRB 090902B Band ~ Black body-like ⇒ Photosphere emission

  5. Photosphere-Internal-External Shock Model External Shock Internal Shock Photo- sphere Variable Long-lived Toma, Wu & Meszaros Kumar & Barniol Duran 09 Ghisellini+09, Wang+09 Corsi+09, Gao+10 keV MeV GeV

  6. Amati/Yonetoku Relation A Distance Indicator L∝T4 L∝T2 Yonetoku+KI 03 [Ghirlanda’s talk]

  7. Fireball Dissipation Tobs Rees & Meszaros 05 Thompson+ 07 Ghisellini+ 07 Ryde & Pe’er 09 KI+07 G For Yonetoku Rel. Gm rph rb r0 rsh lnr

  8. Radiation Dominated Accelerated toVery High pp collision thick pp collision thin Proton ~ Hot Relics in Cosmology Energy Density after Shock Radiation in Comoving

  9. Conventional Fireball Gmax~103 Meszaros & Rees Shemi & Piran Paczynski Goodman Baryon-Rich Baryon-Less

  10. Reheated Fireball Gmax~106! KI in prep. Baryon-Rich Baryon-Less

  11. Internal Shock Synchrotron KI in prep.

  12. For Moderate G Toma+10 G~103

  13. Max Synchrotron Energy Very High Lorentz Factor (VHLF) case A target for CTA Wang+ 09 Piran & Nakar 10 Barniol Duran & Kumar 10 GRB 090926 Break?? KI in prep.

  14. GeV Onset Delay pp Collision Thick ⇒ Thin [Baryon-rich ⇒ Barion-less]

  15. pp thin Baryon-less pp thick Baryon-rich Time MeVg Time GeVg TeVn– GeVg Anti-Correlation Time pp→p→n TeVn en~Gm2mpc2>0.1TeV Time

  16. Summary • Very High Lorentz Factor (VHLF)Gmax can be up to ~106 (> Gmax,conv~103) • Internal Shock Synchrotron⇒ Power-law component over >7 decades • ctdelay ~ [rm=rpp~L-1/5] ~ Rstar ~ 1010cm • Neutrino – GeVg Anti-Correlation

  17. Two-Mass Collision Energy Momentum Yonetoku Relation Before dissipation, rela. matter E ~ radiation E Coasting Gc~Gm2 Mass=ErGr/Gm2＜１０−8M（available at Rstar)

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