13110( 16) - 19-Nov-2014 17:04:05 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13110 Version: 16 Check-in Time: 19-Nov-2014 17:04:05 STScI Edit Number: 11 Title The Astrophysics of the Most Energetic Gamma-Ray Bursts ------------------------------------------------------------------------------------ Type Cycle GO 20 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Andrew S. Fruchter Space Telescope Science Institute Y CoI: Dr. Kuntal Misra Aryabhatta Research Institute of N Observational Sci CoI: Dr. John F. Graham Max-Planck-Institut fur extraterrestrische N Physik CoI: Dr. Asaf Pe'er Harvard University N CoI: Dr. Stephen T. Holland Eureka Scientific Inc. N CoI: Prof. Nial R. Tanvir University of Leicester N CoI: Prof. Andrew J. Levan The University of Warwick N CoI: Dr. Stephen Bradley Cenko NASA Goddard Space Flight Center N ------------------------------------------------------------------------------------ Abstract The Large Area Telescope (LAT) of Fermi has found a sample of highly relativistic gamma-ray bursts (GRBs), which may be among the most energetic bursts ever discovered. Here we propose to use Chandra, HST and the EVLA to follow the late time light curve of a LAT detected burst that also has excellent early multi-wavelength coverage. Our observations, in conjunction with the Fermi data, will allow us to measure the energy and the bulk Lorentz factor of the explosion. Recent work on some of the most powerful GRBs begins to substantially constrain physical models of the progenitors. The energetics of the highly relativistic LAT bursts may greatly strengthen these constraints and provide new insight into the currently unknown mechanism that determines the energy in a GRB. ------------------------------------------------------------------------------------ Observations Description ------------------------ We plan three visits with HST: the first an orbit long, a second two orbits long, and a third four orbits long. The first visit will occur about around twenty days after outburst. The second will be around forty days after outburst. The exact times will be scaled according to the decay seen from the ground. The third visit will be taken at least six months after the burst to allow an accurate host subtraction. We will use the UVIS camera on WFC3 because WFC3 easily has as good sensitivity on point sources as ACS with smaller detector-induced noise sources (CTE, bias-striping, etc). We will choose the filter at the time of the ToO to match one of the best observed bands from the ground (most likely a red band). If the OT and host are sufficiently bright in the first two epochs we will divide the last epoch into 3 orbits with WFC3/UVIS and one orbit with WFC3/IR, in order to better study the environment underlying this extremely energetic burst. ------------------------------------------------------------------------------------ 13110( 16) - 19-Nov-2014 17:04:05 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 2 GRB130427A GALAXY, HIGH REDSHIFT RA=11H32M32.8400S, J2000 V = 22 +/- 1 GALAXY DEC=+27D41'56.20" Reference Frame: Other: SDSS ------------------------------------------------------------------------------------------------------------------------------------ 13110( 16) - 19-Nov-2014 17:04:05 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 4 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.135 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 8 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BLOB WFC3-IR-DITHER-LINE Pattern_Purpose DITHER DITHER Number_Of_Points 2 2 Point_Spacing 5.183 0.636 Line_Spacing Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 41.859 41.788 Angle_Between_Sides Center_Pattern YES NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 9 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.173 Line_Spacing 0.112 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 10 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BLOB WFC3-IR-DITHER-LINE Pattern_Purpose DITHER DITHER Number_Of_Points 2 2 Point_Spacing 5.183 0.636 Line_Spacing Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 41.859 41.788 Angle_Between_Sides Center_Pattern YES NO ------------------------------------------------------------------------------------------------------------------------------------ 13110( 16) - 19-Nov-2014 17:04:05 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 11 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.605 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 41.788 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 13110( 16) - 19-Nov-2014 17:04:05 - [ 5] Visit: 01 Visit Requirements: SCHED 100%; BEFORE 20-JUL-2013:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 GRB130427A WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=STEP50, NSAMP=10 1 DEF POS TARG 40, 30; GS ACQ CUM (996.928 SCENARIO SINGLE; PATTERN S) 8 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 GRB130427A WFC3/UVI ACCUM UVIS1 F606W 1 360 S POS TARG 40, 30; PATTERN S (1080 S) 4 2 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 1 1 none none 1 N/A CUM GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 1 2 none none 1 N/A CUM GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 2 1 none none 1 N/A CUM GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 2 2 none none 1 N/A CUM GRB130427A 2 WFC3/UVI ACCUM UVIS1 F606W 1 none none none 1 N/A S GRB130427A 2 WFC3/UVI ACCUM UVIS1 F606W 2 none none none 1 N/A S GRB130427A 2 WFC3/UVI ACCUM UVIS1 F606W 3 none none none 1 N/A S 13110( 16) - 19-Nov-2014 17:04:05 - [ 6] Visit: 02 Visit Requirements: SCHED 100%; ORIENT 255D TO 260 D; BEFORE 15-JAN-2014:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 GRB130427A WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=STEP50, NSAMP=10 1 DEF POS TARG -40, -30; CUM (996.928 PATTERN 8 1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 GRB130427A WFC3/UVI ACCUM UVIS2 F606W 1 360 S POS TARG -40, -30; S (1080 S) PATTERN 4 2 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 1 1 none none 1 N/A CUM GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 1 2 none none 1 N/A CUM GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 2 1 none none 1 N/A CUM GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 2 2 none none 1 N/A CUM GRB130427A 2 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 N/A S GRB130427A 2 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 N/A S GRB130427A 2 WFC3/UVI ACCUM UVIS2 F606W 3 none none none 1 N/A S 13110( 16) - 19-Nov-2014 17:04:05 - [ 7] Visit: 03 Visit Requirements: SCHED 100%; ORIENT 185D TO 195 D; BETWEEN 21-FEB-2014:00:00:00 AND 31-MAR-2014:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 GRB130427A WFC3/UVI ACCUM UVIS2 F606W 1 550 S POS TARG 40, -25; GS ACQ S see below SCENARIO BASE1B3; (2288 S) PATTERN 9 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 GRB130427A WFC3/IR MULTIAC IR-FIX F160W NSAMP=13, SAMP-SEQ=SPARS50 1 DEF POS TARG 40, -25; CUM (2411.751 PATTERN 10 2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ GRB130427A 1 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 572.0 S S GRB130427A 1 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 572.0 S S GRB130427A 1 WFC3/UVI ACCUM UVIS2 F606W 3 none none none 1 572.0 S S GRB130427A 1 WFC3/UVI ACCUM UVIS2 F606W 4 none none none 1 572.0 S S GRB130427A 2 WFC3/IR MULTIAC IR-FIX F160W 1 1 none none 2 N/A CUM GRB130427A 2 WFC3/IR MULTIAC IR-FIX F160W 1 2 none none 2 N/A CUM GRB130427A 2 WFC3/IR MULTIAC IR-FIX F160W 2 1 none none 2 N/A CUM GRB130427A 2 WFC3/IR MULTIAC IR-FIX F160W 2 2 none none 2 N/A CUM 13110( 16) - 19-Nov-2014 17:04:05 - [ 8] Visit: 04 Visit Requirements: SCHED 100%; ORIENT 270D TO 315 D; BETWEEN 01-DEC-2014:00:00:00 AND 31-DEC-2014:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 GRB130427A WFC3/IR MULTIAC IR-FIX F160W NSAMP=13, SAMP-SEQ=SPARS50 1 DEF POS TARG 0, 0; GS ACQ CUM (2411.751 SCENARIO SINGLE; PATTERN S) 8 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 GRB130427A WFC3/IR MULTIAC IR-FIX F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG -0.5, -0.5; CUM (1208.808 PATTERN 11 2 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 GRB130427A WFC3/UVI ACCUM UVIS2 F606W 1 500 S POS TARG -40, -30; S see below PATTERN 9 3 (2246 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 GRB130427A WFC3/UVI ACCUM UVIS2 F606W 1 350 S POS TARG -39.5, -29.5; S see below PATTERN 4 4 (1173 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 1 1 none none 1 N/A CUM GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 1 2 none none 1 N/A CUM GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 2 1 none none 1 N/A CUM GRB130427A 1 WFC3/IR MULTIAC IR-FIX F160W 2 2 none none 1 N/A CUM GRB130427A 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 2 N/A CUM GRB130427A 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 2 N/A CUM GRB130427A 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 2 N/A CUM GRB130427A 3 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 2 582.0 S S GRB130427A 3 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 2 582.0 S S GRB130427A 3 WFC3/UVI ACCUM UVIS2 F606W 3 none none none 3 541.0 S S 13110( 16) - 19-Nov-2014 17:04:05 - [ 9] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ GRB130427A 3 WFC3/UVI ACCUM UVIS2 F606W 4 none none none 3 541.0 S S GRB130427A 4 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 3 391.0 S S GRB130427A 4 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 3 391.0 S S GRB130427A 4 WFC3/UVI ACCUM UVIS2 F606W 3 none none none 3 391.0 S S 13110( 16) - 19-Nov-2014 17:04:05 - [ 10] Summary Form for Proposal 13110 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX, UVIS1, UVIS2 ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=10, NSAMP=13, NSAMP=9, SAMP-SEQ=SPARS50, SAMP-SEQ=STEP50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BEFORE 15-JAN-2014:00:00:00, BEFORE 20-JUL-2013:00:00:00, BETWEEN 01-DEC-2014:00:00:00 AND 31-DEC-2014:00:00:00, BETWEEN 21-FEB-2014:00:00:00 AND 31-MAR-2014:00:00:00, GS ACQ SCENARIO BASE1B3, GS ACQ SCENARIO SINGLE, ORIENT 185D TO 195 D, ORIENT 255D TO 260 D, ORIENT 270D TO 315 D, PATTERN 10 2, PATTERN 11 2, PATTERN 4 2, PATTERN 4 4, PATTERN 8 1, PATTERN 9 1, PATTERN 9 3, POS TARG -0.5, -0.5, POS TARG -39.5, -29.5, POS TARG -40, -30, POS TARG 0, 0, POS TARG 40, -25, POS TARG 40, 30, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F160W, F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names GRB130427A ------------------------------------------------------------------------------------------------------------------------------------