First try.
----- Attempting Submission 1 (Fri Apr 13 13:35:57 GMT 2007) -----
This was formerly submitted as an ACS proposal, Phase I submission 13
Assigned ID: 1032
----- Attempting Submission 1 (Fri Feb 02 20:45:22 GMT 2007) -----
Phase I Proposal 1032 (tycho2) successfully submitted.
----- Attempting Submission 2 (Mon Feb 05 19:29:11 GMT 2007) -----
Phase I Proposal 1032 (tycho2) successfully submitted.
Imaging the Shock Precursor in Tycho's SNR
Cosmic ray acceleration in supernova remant shocks requires shock precursors where particles are trapped by plasma turbulence. The precursors also heat and compress the upstream gas, producing H alpha emission and affecting line profiles. We propose to image the brightest non-radiative shock in Tycho's SNR to measure the brightness and width of the precursor. These measurements will constrain 2 key parameters in cosmic ray acceleration models, and they will improve the accuracy of shock speed and electron-ion equilibration derived from H alpha profiles.
This is a 10 orbit observation at a single pointing with WFPC2 in H alpha. Each exposure is placed at a POS-TARG to give Max Mutchler's recommended dither pattern (number 15). No CR-SPLITS are used because there are 10 separate exposures.
ISM AND CIRCUMSTELLAR MATTER
12
false
0.0
false
false
false
false
false
false
SUPPORTED
ISM
SHOCK FRONT
SNR
4.5e-16 ergs/(cm2 s arcsec2)
J2000
00 25 50.9000
+64 09 19.20
J2000
WFPC2
Imaging
No
F656N
/home/raymond/OP-cache/tycho_phase2-v01.xml
Three 1-orbit exposures with 3 POS-TARG values to match pattern 15 box
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This is the second set of exposures in H alpha. It begins with the fourth POS-TARG of
the box pattern.
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This is the third set of 3 orbits imaging Tycho's knot g in H alpha
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