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OBSID:
27504
 Title:
Chandra Observations of Superluminal Motion in the Jet of M87    
Investigator:
Snios
 Observer:
Snios, Bradford
 Phone:
617-496-0743
 Email:
bradford.snios@cfa.harvard.edu
Target Name:
M87
 Sequence Number:
704097
 Instrument:
HRC-I
 Grating:
NONE
 SI Mode:
H2C_0001B
 Raster Scan:
N
 Annotated DOT:
MAY1123a

Proposal Number:
22700208
 Right Ascension:
187.706
 Declination:
12.3911
 Status:
archived
 Start Date:
2023-05-14 07:13:18
Category:
ACTIVE GALAXIES AND QUASARS
 Type:
GO
 AO Cycle:
22
 Dither Flag:
Y
 Y Offset:

 Z Offset:
Est. Count Rate:
3
 Order-1 Count Rate:

 Exposure Time:
15.00
 Time Remaining:

 Reqd Start Time:

 Reqd Stop Time:
Period:

 Epoch:

 Start of Period:

 End of Period:

 PS Margin:

 PE Margin:

 Max Segments:
0

Trigger Level:
DEF
 Range Switch Lvl:
DEF
 Spect Mode:
DEF
 Antico Enab:
DEF
 Width Enab:
DEF
 Width Thold:
DEF
 Uld Enab:
DEF
 Upper Lvl Disc:
DEF
Blank Enab:
EDGE
 U Blank Hi:
119
 V Blank Hi:
119
 U Blank Lo:
69
 V Blank Lo:
69
 Py Shutter Pos:
DEF
 My Shutter Pos:
DEF
 Timing Mode:
N

Abstract:
We propose observations to measure proper motions in the X-ray jet of the nearby radio galaxy M87. Observations with the High Resolution Camera (HRC-I) instrument will be compared against archival Chandra observations to measure, or strictly limit, the proper motions of the outer knots in the jet. These results will probe the bulk relativistic flow of the X-ray jet and constrain possible origin mechanisms of the knots. The measurements from this analysis will provide the highest precision X-ray proper motion measurements ever for an extragalactic source, a capability entirely unique to Chandra

psci Run:
168
 Processing Date:
Jun 5 2023
 psci Directory:
/nfs/maaxnew/r3/fj/acis124c/acis124.log
OBSID:
27504
 SIM Mode:
HRC-I
 OTG Mode:
NONE
 Seq Number:
MAY1123a
 Target Name:
Histogram_I
 AO:
0
Start VCDU:
95879:064
 Start Time (UTC):
134:25889.187
 Stop Time (UTC):
134:42016.304
 Kilosecs:
16.1
 % Frames:
0.2
 # CCDs:
I2
# Frames:
4827
 # Events:
0
 Events/sec:
0
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
1
 FP Temp:
-114.0
Parameter Block:
0x00d96014
 Window Block:
-
 # Windows:
0
 FEP Mode:
Te3x3
 BEP Mode:
EH
 Start Row:
0
 # Rows:
1024
Primary Exposure:
33
 Secondary Exposure:
0
 Duty Cycle:
0
 Summing?:
No
 Bias?:
Yes
 Trickle?:
No
 Bias Run:
168

pgf@space.mit.edu Tue Apr 8 9:48:31 EST 2025