grb absorption spectroscopy - Inaf

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HIGH RESOLUTION SPECTROSCOPY Advantages of hi-res spectroscopy: • Separates the GRB surrounding medium in components, allowing a more accurate study of the composition, density, cinematics and physics of the absorbing gas. • Is necessary to disentangle the ISM from the absorption coming from the GRB surroundings. • Is our only tool to fully explore the wealth of information carried by the lines absorbed by the excited (in particular fine structure) levels. Disadvantages • Suitable for high luminous afterglows only • A fast reaction to the trigger is needed Now achievable thanks to Swift and RRM
Advantages: Piranomonte et al. 2008 HIGH RESOLUTION SPECTROSCOPY 2) 1) disentangles Separates the the GRB ISM surrounding and the absorption medium coming in components, from the allowing GRB surroundings a more accurate study of the composition, density, kinematics and physics of the absorbing gas. GRB 050922C GRB 021004 Fiore et al. 2005 FORS, R=1000 UVES, R=40000
Page 1 and 2: Absorption studies of GRB afterglow
Page 3 and 4: Suitable to: GRB ABSORPTION SPECTRO
Page 5: LOW - RES GRBs GRBs provide an inde
Page 9 and 10: FINE STRUCTURE FEATURES The gross s
Page 11: GRB 060418: VARIABILITY Fine struct
Page 14 and 15: CrII groud state line is decreasing
Page 18 and 19: OVI Lyβ SII NiII NV NiII Lyα OI/S
Page 20 and 21: MAIN SYSTEM METALLICITY Ly_α Missi
Page 26 and 27: CONCLUSIONS GRBs are a new tool to
Page 28 and 29: GRB explosion site Host gas far awa
Page 32 and 33: GRB 050730 The main system presents
Page 34 and 35: GRB 050730 Fine structure transitio
Page 36: GRB 050730 Second component: UV pum
Page 39 and 40: GRB080319B - MAIN SYSTEM: COMPONENT
Page 41 and 42: GRB080319B - MAIN SYSTEM: COMPONENT
Page 43 and 44: FINE STRUCTURE LINE VARIABILITY Fin
Page 45: GRB080319B - TIME DEPENDENT MODELIN
Page 48 and 49: GRB080330 - MAIN SYSTEM: COMPONENTS
Page 51 and 52: INTERVENING ABSORBERS GRB Strong Mg
Page 53 and 54: FINE STRUCTURE AND EXCITED LINES Id

grb absorption spectroscopy - Inaf

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