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Rest frame light curves of Swift GRBs
Vanessa Mangano,Giancarlo Cusumano, Valentina La Parola,
Eleonora Troja, Teresa Mineo
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Outline of the Talk
• The sample of Gamma-ray burst with known redshift triggered by Swift
• Their light curves: shape and and average properties
• Energetics
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26 GRB with flares
14 GRB w/o flares
High zShortXRFothersHigh-z/XRF
8 High z/GRB
3 Short
8 XRF20 Others
1 High z/XRFThe sample
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The redshift distribution
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Nousek at al. 2006
Chincarini et al. 2005
Previous works
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luminositylight curves
with4 < z < 7
<Log Lx>=49.8 ± 0.6
<Log Lx>=48.3 ± 0.8
<Log Lx>=46.1 ± 0.6
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<Log Lx>=49.6 ± 0.5
<Log Lx>=48.3 ± 0.9
<Log Lx>=46.7 ± 0.6
luminositylight curves
with2 < z < 4
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<Log Lx>=50.19 ± 0.73
<Log Lx>=47.7 ± 0.6
<Log Lx>=46.1 ± 0.7
luminositylight curves
with1 < z < 2
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Long bursts
Short bursts
Luminosity light curves with z < 1
<Log Lx>=45.0 ± 0.8
<Log Lx>=46.0 ± 1.5
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X-ray luminosities atfixed rest frame timessince the trigger
@ 35 s@ 1 ks@ 11 hr
Only the continuum underlying flares
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Afterglow light curves with two breaks
(at least)
Light curves with one break
no breaks...
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Average properties of the light curves
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The durations of long bursts
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Nousek et al. 2006
Correlation between Eiso and the X-ray afterglow luminosity
BeppoSAX andHETE data from
Bloom et al. 2003Berger et al. 2003
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Using the larger Swift sample…..
10
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Energetics15-150 keV rest frame energy of the prompt
versus0.2-10 keV rest frame energy of the afterglow
X-rays from 35 to 1000 s X-rays from 1000 s to 11 hr
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To be continued……
Summary:
• Average properties of the luminosity light curves in rest frame studied in detail• Energetics of flares and different afteglow phases need further investigation