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OBSID:
26319
 Title:
Probing the X-rays from an unprecedented SMBH Binary at the Last Inspiraling Stage
Investigator:
Jiang
 Observer:
Jiang, Ning
 Phone:
+8615255165218
 Email:
jnac@ustc.edu.cn
Target Name:
SDSS J143016.05+230344.4
 Sequence Number:
704603
 Instrument:
ACIS-S
 Grating:
NONE
 SI Mode:
TE_00A0CB
 Raster Scan:
N
 Annotated DOT:
FEB2122a

Proposal Number:
23708834
 Right Ascension:
217.567
 Declination:
23.0624
 Status:
archived
 Start Date:
2022-02-27 07:13:39
Category:
ACTIVE GALAXIES AND QUASARS
 Type:
DDT
 AO Cycle:
23
 Dither Flag:
Y
 Y Offset:
0
 Z Offset:
2
Est. Count Rate:
0.23
 Order-1 Count Rate:

 Exposure Time:
4
 Time Remaining:
4.091
 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:
CUSTOM
 Starting Row:
449
 Row Count:
128
 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:
We have recently discovered the first likely SMBH merger event ever discovered in human history. The final merger will happen within three years, maybe as short as three months. High-quality X-ray spectra might be one of the most powerful electromagnetic signal to study the last inspiraling stage. Our requested XMM-Newton ToO observations on Dec.31 and Jan.19 have unveiled ultra-high velocity (>0.1c) absorbers with drastic change, that is natural in binary scenario but never been seen in normal AGNs. Chandra turns out to be the only facility which can further monitor the unprecedented target with high-quality spectra in the next five months (from Feb. To June, visibility gap for XMM-Newton). Hopefully Chandra will contribute significantly to confirm the first SMBH binary merger event and explore high energy physical process happening during the final stage of the binary inspiral.

psci Run:
62
 Processing Date:
Mar 3 2022
 psci Directory:
/nfs/maaxnew/r3/fe/acis119a/acis119.log
OBSID:
26319
 SIM Mode:
ACIS-S
 OTG Mode:
NONE
 Seq Number:
704603
 Target Name:
SDSS_J143016.05
 AO:
23
Start VCDU:
119886:040
 Start Time (UTC):
058:26980.144
 Stop Time (UTC):
058:31073.602
 Kilosecs:
4.1
 % Frames:
100.0
 # CCDs:
S2
# Frames:
7566
 # Events:
10913
 Events/sec:
2
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
1
 FP Temp:
-119.6
Parameter Block:
0x00a0c024
 Window Block:
-
 # Windows:
0
 FEP Mode:
Te5x5
 BEP Mode:
F
 Start Row:
448
 # Rows:
128
Primary Exposure:
5
 Secondary Exposure:
0
 Duty Cycle:
0
 Summing?:
No
 Bias?:
Yes
 Trickle?:
Yes
 Bias Run:
62

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