gamma-ray bursts - an interesting too target for nahual -
Post on 30-Dec-2015
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Gamma-Ray Bursts - an interesting ToO target for NAHUAL -
Sylvio Klose, Thüringer Landessternwarte Tautenburg
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GRBs: The basic picture
E ~ 10^50 bis 10^53 erg
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for example:
Timing is everything
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Long and short Gamma-Ray Bursts
M > 5-10 M_sund > 100 000 km
M ~ 3 M_sund < 100 km
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satellite
Gamma-Ray Burst
S band
Data andCommands
Control Center
Observatories
VHF
Localization Alerts
Internet
GCN (Gamma-Ray BurstCoordinate Network)
Internet
Secondary ground stations
The international GRB alert network
• ToO mode• RRM mode
VLT
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Sloan Digital Sky Survey44000 quasars
71 GRBs
1 Gyr
1.6
Gyr
3.4
Gyr
GRBs as a pathfinder into the high-z universe
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GRBs as very luminous events
Peter Schnoor, Kiel,Germany
d = 800 Mpc !
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The luminosities of the afterglows
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Exploring the ISM in cosmologically remote galaxies
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GRBs as a pathfinder into the high-z universe
Lyman drop out
GRB 050904
z = 6.56z = 6.42 z = 6.29
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GRB 050904 at z=6.29
Subaru 8m
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Outlook: What NAHUAL could provide
• confirm high-redshift bursts (z > 7)
• search for variable spectral lines
• search for signals from the GRB progenitor
• probe the reionization of the universe
All this with a potentially small amount of observing time.
timing is everything
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