15175( 2) - 18-Jul-2017 14:48:32 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15175 Version: 2 Check-in Time: 18-Jul-2017 14:48:32 STScI Edit Number: 0 Title An Infrared Imaging Test of the IC/CMB Model for the Unusual Spectrum of AP Librae ------------------------------------------------------------------------------------ Type Cycle GO 25 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Eileen T Meyer University of Maryland Baltimore County Y CoI: Dr. Markos Georganopoulos University of Maryland Baltimore County N CoI: Dr. William B. Sparks Space Telescope Science Institute N CoI: Dr. Marco Chiaberge Space Telescope Science Institute - ESA N ------------------------------------------------------------------------------------ Abstract We propose infrared imaging of a recently-discovered anomalous X-ray emitting jet in the nearby source AP Librae, which underwent a flare observed by the Fermi gamma-ray space telescope in August 2016. The H.E.S.S. observatory also unexpectedly detected this source at TeV energies in 2015. Multiple papers have been written since the H.E.S.S. discovery speculating on the emission process due to the extremely broad and unusually shaped spectrum from X-rays to very high energy, and it has been claimed that the $>$10 GeV through TeV emission is not from the unresolved blazar core, but rather inverse-Compton upscattering of CMB photons by a still highly-relativistic kpc-scale jet. However, this model is called into question by the recent flaring activity. A clear test of the IC/CMB model can be made through a short WFC3/IR observation due to the fact that the model makes a fixed prediction for the precise level of infrared emission from the jet. Further, if the infrared emission is confirmed, the IC/CMB model implies fast proper motions on the kpc scale, on the order of 10c, which can be easily detected via a follow-up HST observation in ~3-4 years, which is just possible within the operating lifetime of Hubble, with the currently proposed observations serving as the first epoch. A non-detection would clearly rule out the IC/CMB model, and either result would inform the approach for appropriate follow-up observations with HST, ALMA, and Chandra. ------------------------------------------------------------------------------------ Observations Description ------------------------ These is a straightforward IR imaging observation of an optical jet. The bright core of the quasar is the main technical concern. Orient constraints have been specified so the 15" jet (as seen in X-rays) is not over-run by the bright wing/spike from the PSF of either the core or the nearby bright source. ------------------------------------------------------------------------------------ 15175( 2) - 18-Jul-2017 14:48:32 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 APLIBRAE GALAXY, JET, QUASAR, RA=15H17M41.8131S, J2000 V = 14.0 RADIO GALAXY DEC=-24D22'19.48" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 15175( 2) - 18-Jul-2017 14:48:32 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 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 ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 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 221.788 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 15175( 2) - 18-Jul-2017 14:48:32 - [ 4] Visit: 01 (APLib-IR) Visit Requirements: ORIENT 330D TO 10 D; ORIENT 60D TO 100 D; ORIENT 150D TO 190 D; ORIENT 240D TO 280 D On Hold Comments: Additional Comments: IR imaging to detect the radio/X-ray jet of AP Lib. 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 APLIBRAE WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=15 1 DEF PATTERN 1 1 CUM (1058.819 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 APLIBRAE WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=15 1 DEF POS TARG 0.5, 0; PATTERN CUM (1058.819 2 2 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 APLIBRAE WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=14 1 DEF POS TARG -0.5, 0 CUM (327.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 APLIBRAE WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=15 1 DEF POS TARG 0, 0.5; PATTERN CUM (1058.819 1 4 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 APLIBRAE WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS25, NSAMP=15 1 DEF POS TARG 0, -0.5; CUM (1058.819 PATTERN 2 5 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 APLIBRAE WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS50, NSAMP=10 1 DEF POS TARG -0.5, -0.5 CUM (452.936 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 | ------------------------------------------------------------------------------------------------------------------------------------ APLIBRAE 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM APLIBRAE 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM APLIBRAE 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM APLIBRAE 2 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM APLIBRAE 2 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM APLIBRAE 2 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM 15175( 2) - 18-Jul-2017 14:48:32 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ APLIBRAE 3 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM APLIBRAE 4 WFC3/IR MULTIAC IR F160W 1 none none none 2 N/A CUM APLIBRAE 4 WFC3/IR MULTIAC IR F160W 2 none none none 2 N/A CUM APLIBRAE 4 WFC3/IR MULTIAC IR F160W 3 none none none 2 N/A CUM APLIBRAE 5 WFC3/IR MULTIAC IR F160W 1 none none none 2 N/A CUM APLIBRAE 5 WFC3/IR MULTIAC IR F160W 2 none none none 2 N/A CUM APLIBRAE 5 WFC3/IR MULTIAC IR F160W 3 none none none 2 N/A CUM APLIBRAE 6 WFC3/IR MULTIAC IR F160W none none none none 2 N/A CUM 15175( 2) - 18-Jul-2017 14:48:32 - [ 6] Summary Form for Proposal 15175 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=10, NSAMP=14, NSAMP=15, SAMP-SEQ=SPARS25, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 150D TO 190 D, ORIENT 240D TO 280 D, ORIENT 330D TO 10 D, ORIENT 60D TO 100 D, PATTERN 1 1, PATTERN 1 4, PATTERN 2 2, PATTERN 2 5, POS TARG -0.5, -0.5, POS TARG -0.5, 0, POS TARG 0, -0.5, POS TARG 0, 0.5, POS TARG 0.5, 0 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F160W ------------------------------------------------------------------------------------------------------------------------------------ Target Names APLIBRAE ------------------------------------------------------------------------------------------------------------------------------------