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OBSID:
23538
 Title:
Tycho's SNR: A New Era          
Investigator:
Williams
 Observer:
Williams, Brian
 Phone:
3016145085
 Email:
brian.j.williams@nasa.gov
Target Name:
Tycho's SNR
 Sequence Number:
503213
 Instrument:
ACIS-I
 Grating:
NONE
 SI Mode:
TE_00866B
 Raster Scan:
N
 Annotated DOT:
SEP2721a

Proposal Number:
22500080
 Right Ascension:
6.30829
 Declination:
64.1443
 Status:
archived
 Start Date:
2021-09-27 07:44:27
Category:
SN, SNR AND ISOLATED NS
 Type:
GO
 AO Cycle:
22
 Dither Flag:
Y
 Y Offset:
0
 Z Offset:
0
Est. Count Rate:
15
 Order-1 Count Rate:

 Exposure Time:
30
 Time Remaining:
29.081
 Reqd Start Time:

 Reqd Stop Time:
Period:

 Epoch:

 Start of Period:

 End of Period:

 PS Margin:

 PE Margin:

 Max Segments:
0

ACIS Mode:
TE
 Standard?:
No
 BEP Mode:
F
On-Chip Summing?:
No
 Row Sum:

 Column Sum:

 Frame Time:
Subarray Mode:
NONE
 Starting Row:
0
 Row Count:
1023
 Subarray Frame Time:

Duty Cycle?:
No
 Cycle Count:
0
 Primary Exp Time:

 Secondary Exp Time:
Event Filter?:
No
 Filter Threshold:

 Filter Range:

 Bias Requested?:
No
 Bias Frequency:

 Bias After?:
No
 Spatial Window?:
No

Abstract:
Type Ia SNe are of fundamental importance in astrophysics, yet the nature of their environments and progenitor systems is poorly understood. We propose a new epoch of imaging of Tycho?s SNR, with the goal of expanding the baseline for proper motions to as many as 21 years. The dynamics of the forward shock can be used to examine the possibility of localized rapid deceleration of the blast wave, as well as to lower uncertainties on the ejecta dynamics.

psci Run:
124
 Processing Date:
Oct 10 2021
 psci Directory:
/nfs/maaxnew/r3/fc/acis117c/acis117.log
OBSID:
23538
 SIM Mode:
ACIS-I
 OTG Mode:
NONE
 Seq Number:
503213
 Target Name:
Tycho's_SNR
 AO:
22
Start VCDU:
110117:056
 Start Time (UTC):
270:28800.306
 Stop Time (UTC):
270:57892.464
 Kilosecs:
29.1
 % Frames:
100.0
 # CCDs:
I4
# Frames:
9262
 # Events:
1960245
 Events/sec:
67
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
0
 FP Temp:
-119.4
Parameter Block:
0x00866024
 Window Block:
-
 # Windows:
0
 FEP Mode:
Te3x3
 BEP Mode:
F
 Start Row:
0
 # Rows:
1024
Primary Exposure:
31
 Secondary Exposure:
0
 Duty Cycle:
0
 Summing?:
No
 Bias?:
Yes
 Trickle?:
Yes
 Bias Run:
124

pgf@space.mit.edu Thu Apr 3 20:00:53 EST 2025