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OBSID:
29349
 Title:
Revealing the Nature of Velocity-Offset Broad Line Emission in AGN with Chandra 
Investigator:
Breiding
 Observer:
Breiding, Peter
 Phone:
5407986609
 Email:
pbreiding@gmail.com
Target Name:
SDSS J125142.28+240435.3
 Sequence Number:
705105
 Instrument:
ACIS-S
 Grating:
NONE
 SI Mode:
TE_006C8B
 Raster Scan:
N
 Annotated DOT:
MAR2624a

Proposal Number:
25700385
 Right Ascension:
192.926
 Declination:
24.0765
 Status:
archived
 Start Date:
2024-03-31 16:19:18
Category:
ACTIVE GALAXIES AND QUASARS
 Type:
GO
 AO Cycle:
25
 Dither Flag:
Y
 Y Offset:
0
 Z Offset:
0
Est. Count Rate:
0.15
 Order-1 Count Rate:

 Exposure Time:
12
 Time Remaining:
11.569
 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
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:
In a sample of 15,900 SDSS quasars, Eracleous et al. (2012) found 88 objects exhibiting broad emission lines with >1000 km/s velocity offsets with respect to the host galaxy rest frame. One leading hypothesis for the origin of these velocity-offset broad lines is the dynamics of a binary supermassive black hole (SMBH), with competing hypotheses of recoiling SMBH and a broad line region (BLR) gas outflow due to entrainment by a relativistic jet. We propose Chandra ACIS S observations of 10 quasars from this parent sample, with a combined total exposure request of 257 ks. These Chandra observations will serve as an Iron K-alpha line finder survey, necessary to test the BLR-outflow hypothesis. We will also measure black hole masses in order to constrain binary SMBH models.

psci Run:
78
 Processing Date:
Jul 18 2024
 psci Directory:
/nfs/maaxnew/r3/fm/acis127a/acis127.log
OBSID:
29349
 SIM Mode:
ACIS-S
 OTG Mode:
NONE
 Seq Number:
705105
 Target Name:
SDSS_J125142.28
 AO:
25
Start VCDU:
27579:040
 Start Time (UTC):
091:59682.779
 Stop Time (UTC):
091:71263.740
 Kilosecs:
11.6
 % Frames:
100.0
 # CCDs:
S4
# Frames:
3687
 # Events:
252331
 Events/sec:
21
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
0
 FP Temp:
-114.9
Parameter Block:
0x006c8034
 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:
78

pgf@space.mit.edu Sat Mar 29 10:37:19 EST 2025