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Hsiao-Wen Chen (MIT) Josh Bloom (Harvard-Smithsonian) Jason X. Prochaska (Lick Observatory). 236 GRBs over 7 years. The Swift Gamma-ray Burst Mission Burst Alert Telescope (BAT) : 4 arcmin error radius X-ray Telescope (XRT): 5 arcsec accuracy UV/Optical Telescope (UVOT): - PowerPoint PPT Presentation
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Hsiao-Wen Chen (MIT)
Josh Bloom (Harvard-Smithsonian)
Jason X. Prochaska (Lick Observatory)
236 GRBs over 7 years
The Swift Gamma-ray Burst Mission
• Burst Alert Telescope (BAT) :
4 arcmin error radius
• X-ray Telescope (XRT):
5 arcsec accuracy
• UV/Optical Telescope (UVOT):
< 2 arcsec
~ 150 instantly-localized GRBs per year
Barth et al. (2003)
Rapid spectroscopic follow-up with R > 6000
GRAASP Science:
• Probe the reionization epoch:
5% of Swift GRBs expected at z > 6
LBQS0058+0155zDLA=0.613
GRAASP Science:
• Probe the reionization epoch:
5% of Swift GRBs expected at z > 6
• Unmask damped Ly absorbing
galaxies
LBQS0058+0155zDLA=0.613
GRAASP Science:
• Probe the reionization epoch:
5% of Swift GRBs expected at z > 6
• Unmask damped Ly absorbing
galaxies
• Study the chemical abundances
of the ISM of the GRB hosts
GRAASP telescope/funding resources so far :• UC/Keck TOO time: 16 hours per semester
• TOO at Lick Observatory
• TOO on Gemini N/S: 20 hours per semester
• PAIRITEL: dedicated 1.3-m IR imaging telescope on Mt. Hopkins
• Swift cycle 1 guest investigator program: $35 k
GRAASP Alert System:
http://www.graasp.org/
Broader interests/participation in the Magellan community?• Rapid, efficient, organized follow-up program of all Swift GRBs.
• Multiple connections to community interests (e.g. supernovae, IGM,
etc.)---potential key-project material to foster inter-institution
collaboration.
• Public data archive to provide instant access of the program data to
all Magellan members
Issues:• Conflict of interests among individuals and time share between
different partners?• Insurance of the vitality and productiveness of the project.
Features of GRAASP:• Automated alerts
• Existing funding to build data archive
• Data reduction pipeline for fast and uniform data processing.
Summary:• Rapid spectroscopic follow-up of Swift GRBs on
Magellan; unique data for non-GRB sciences
• GRAASP alert script already running on
all Magellan observers computers
• Maximal science return, minimal hurdle
for Magellan observers
• Logistical issues: observation setup, time share,
etc.