0 Assigned ID: 928 ----- Attempting Submission 1 (Fri Apr 07 21:36:10 GMT 2017) ----- 0 ----- Attempting Submission 1 (Tue Jul 18 13:03:53 GMT 2017) ----- 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. 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. Massive Black Holes And Their Host Galaxies 3 false false false false false false SUPPORTED GALAXY JET QUASAR RADIO GALAXY This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 WFC3/IR Imaging No No F160W POS-TARG DITHER 0.605 LINE false false 3 41.788 WFC3-IR-DITHER-LINE-3PT 1 false POS-TARG DITHER 0.605 LINE false false 3 221.788 WFC3-IR-DITHER-LINE-3PT 2 false /home/meyer/Research/Financial/grants/hst-15175-APLIB/PHASE2/OP-cache/aplib_phase2-v01.xml 1500382616092 The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. IR imaging to detect the radio/X-ray jet of AP Lib. (Tic-Visit :proposal-id 15175 :visit-id "01" :proposal-version -1 :trans-version "20170613" :date "18-Jul-2017 08:56:56.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 3795136 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15175 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15175 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2860 :al-overhead-at-end 0 :internal-dur-at-end 701 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3217 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15175 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2987 :al-overhead-at-end 0 :internal-dur-at-end 595 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3217 :pcs-gap 0 ) true 2 0