16426( 7) - 14-Sep-2020 21:28:31 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16426 Version: 7 Check-in Time: 14-Sep-2020 21:28:31 STScI Edit Number: 2 Title Title: The Moving Filament of the Guitar Nebula ------------------------------------------------------------------------------------ Type Cycle GO 28 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Roger Romani Stanford University Y CoI: Dr. Martijn De Vries Stanford University N CoI: Dr. Patrick Slane Smithsonian Institution Astrophysical N Observatory CoI: Dr. George G. Pavlov The Pennsylvania State University N CoI: Dr. Oleg Y. Kargaltsev George Washington University N CoI: Dr. Noel Klingler The Pennsylvania State University N ------------------------------------------------------------------------------------ Abstract We propose a new observation of the remarkable X-ray `filament' of the Guitar nebula. Synchrotron emission from this structure shows that pulsar-generated multi-TeV e+/- are escaping to the ISM and propagating at large angle to the pulsar motion. Our observation provides the first sensitive spectral study of the cooling in this structure, which probes the e+/- evolution. This pulsar's very high proper motion shifts the e+/- injection position noticably between CXO imaging epochs; the 2021 image can be compared with past (2012, 2006 and 2000) snapshots to directly measure the synchrotron fading with age. Paired with a contemporaneous HST Halpha image, we also relate the standoff of the pulsar bowshock to the filament emission, a key test of particle escape models. ------------------------------------------------------------------------------------ Observations Description ------------------------ ACS/WFC F658+F625 ------------------------------------------------------------------------------------ 16426( 7) - 14-Sep-2020 21:28:31 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 PSR-B2224+65 STAR, PULSAR RA=22H25M52.1020S, J2000 V = 28 DEC=+65D35'34.28" Reference Frame: Other: SIMBAD Comments: Donot pplyt PM to target position. ------------------------------------------------------------------------------------------------------------------------------------ 16426( 7) - 14-Sep-2020 21:28:31 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type SPIRAL Pattern_Purpose DITHER Number_Of_Points 5 Point_Spacing 0.325 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ 16426( 7) - 14-Sep-2020 21:28:31 - [ 4] Visit: 01 (Guitar Filament) Visit Requirements: PCS MODE FINE; CVZ; ORIENT 103D TO 106.8 D 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 PSR-B2224+6 ACS/WFC ACCUM WFC1-CTE F658N 1 2907 S PATTERN 1 1 5 (14535 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 PSR-B2224+6 ACS/WFC ACCUM WFC1-CTE F625W 1 338 S (338 5 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 PSR-B2224+6 ACS/WFC ACCUM WFC1-CTE F625W 1 338 S (338 POS TARG 5 S) -0.3285352373787485, -0.0025006296076491782 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSR-B2224+65 1 ACS/WFC ACCUM WFC1-CTE F658N 1 none none none 1 N/A PSR-B2224+65 1 ACS/WFC ACCUM WFC1-CTE F658N 2 none none none 1 N/A PSR-B2224+65 1 ACS/WFC ACCUM WFC1-CTE F658N 3 none none none 2 N/A PSR-B2224+65 1 ACS/WFC ACCUM WFC1-CTE F658N 4 none none none 2 N/A PSR-B2224+65 1 ACS/WFC ACCUM WFC1-CTE F658N 5 none none none 3 N/A PSR-B2224+65 2 ACS/WFC ACCUM WFC1-CTE F625W none none none none 3 N/A PSR-B2224+65 3 ACS/WFC ACCUM WFC1-CTE F625W none none none none 3 N/A 16426( 7) - 14-Sep-2020 21:28:31 - [ 5] Summary Form for Proposal 16426 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC1-CTE ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CVZ, ORIENT 103D TO 106.8 D, PATTERN 1 1, PCS MODE FINE, POS TARG -0.3285352373787485, -0.0025006296076491782 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F625W, F658N ------------------------------------------------------------------------------------------------------------------------------------ Target Names PSR-B2224+65 ------------------------------------------------------------------------------------------------------------------------------------