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Published byBethanie Palmer Modified over 9 years ago
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Hot Relics in GRB Photosphere and GeV Photon Delay Kunihito Ioka (KEK)
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Very High Lorentz Factor (VHLF) max can be up to ~10 6 (> max,conv ~10 3 ) Internal Shock Synchrotron ⇒ Power-law component over >7 decades c t delay ~ Baryon Load Radius ~ Progenitor Radius ~ 10 10 cm Neutrino – GeV Anti-Correlation
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Abdo+ 09 Ohno’s talk MeV GeV GeV onset delay →e + e - ⇒ >10 3 ~1 sec
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Abdo+ 09 Ohno’s talk GRB 090902B GRB 090510 Band component + Power Law Band ~ Black body-like ⇒ Photosphere emission GeV keV Hurley+94 Gonzaletz+03
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Photo- sphere Internal Shock External Shock keVMeVGeV Toma, Wu & Meszaros Kumar & Barniol Duran 09 Ghisellini+09, Wang+09 Corsi+09, Gao+10 Variable Long-lived
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L∝T2L∝T2 L∝T4L∝T4 Yonetoku+KI 03 [Ghirlanda’s talk] A Distance Indicator
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ln r r0r0 rbrb r sh r ph T obs mm For Yonetoku Rel. Rees & Meszaros 05 Thompson+ 07 Ghisellini+ 07 Ryde & Pe’er 09 KI+07
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Radiation in Comoving Proton Energy Density after Shock pp collision thickpp collision thin Accelerated to Very High Radiation Dominated ~ Hot Relics in Cosmology
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max ~10 3 Meszaros & Rees Shemi & Piran Paczynski Goodman Baryon-LessBaryon-Rich
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max ~10 6 ! KI in prep. Baryon-LessBaryon-Rich
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KI in prep.
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Toma+10 ~10 3
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GRB 090926 Break?? A target for CTA Very High Lorentz Factor (VHLF) case Wang+ 09 Piran & Nakar 10 Barniol Duran & Kumar 10 KI in prep.
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pp Collision Thick ⇒ Thin [Baryon-rich ⇒ Barion-less]
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Time MeV GeV TeV Time pp thin pp thick pp→ → ~ m 2 m c 2 >0.1TeV TeV – GeV Anti-Correlation Baryon-less Baryon-rich
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Very High Lorentz Factor (VHLF) max can be up to ~10 6 (> max,conv ~10 3 ) Internal Shock Synchrotron ⇒ Power-law component over >7 decades c t delay ~ [r m =r pp ~L -1/5 ] ~ R star ~ 10 10 cm Neutrino – GeV Anti-Correlation
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Coasting c m Mass=E r r / m 2 <10 −8 M ( available at R star ) Energy Momentum Yonetoku Relation Before dissipation, rela. matter E ~ radiation E
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