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OBSID:
24296
 Title:
Radio and X-ray edges in the intra-cluster medium      
Investigator:
Botteon
 Observer:
Botteon, Andrea
 Phone:
+390516399385
 Email:
andrea.botteon@inaf.it
Target Name:
A1351
 Sequence Number:
801913
 Instrument:
ACIS-I
 Grating:
NONE
 SI Mode:
TE_006E6B
 Raster Scan:
N
 Annotated DOT:
AUG0221a

Proposal Number:
22800246
 Right Ascension:
175.577
 Declination:
58.497
 Status:
archived
 Start Date:
2021-08-08 02:28:41
Category:
CLUSTERS OF GALAXIES
 Type:
GO
 AO Cycle:
22
 Dither Flag:
Y
 Y Offset:
-2.1
 Z Offset:
0.8
Est. Count Rate:
0.233
 Order-1 Count Rate:

 Exposure Time:
16.5
 Time Remaining:
15.075
 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:
VF
 Dropped Chip Count:
2
 Optional Chips:
S2 S3
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:
Shocks and cold fronts in merging galaxy clusters are believed to play an important role in the (re)energization of relativistic particles generating diffuse synchrotron sources in the intra-cluster medium (ICM). By using the recently released data of the LOFAR Two-meter Sky Survey, we found 3 merging galaxy clusters that show diffuse radio emission characterized by sharp surface brightness jumps. The proposed observations will allow us to study the connection between the thermal and non-thermal gas structures by searching for cospatial discontinuities in the X-rays associated to the edge-like features observed in radio. This will shed light on the mechanisms responsible for the particle (re)energization in the ICM unveiled by LOFAR.

psci Run:
236
 Processing Date:
Aug 11 2021
 psci Directory:
/nfs/maaxnew/r3/fb/acis116d/acis116.log
OBSID:
24296
 SIM Mode:
ACIS-I
 OTG Mode:
NONE
 Seq Number:
801913
 Target Name:
A1351
 AO:
22
Start VCDU:
108915:104
 Start Time (UTC):
220:10229.504
 Stop Time (UTC):
220:25318.916
 Kilosecs:
15.1
 % Frames:
100.0
 # CCDs:
I4
# Frames:
4804
 # Events:
426900
 Events/sec:
28
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
0
 FP Temp:
-115.1
Parameter Block:
0x006e6034
 Window Block:
-
 # Windows:
0
 FEP Mode:
Te5x5
 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:
236

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