ToO Information

Request ID: 41854
Request Type: NEW
ToO Urgency: WITHIN A WEEK
Proposal ID: 4104

Target Info

Target Name: 4U 1630-47
Target No.: 5514
Category: X-RAY BINARIES
Coordinates[J2000]: (248.50671, -47.39300)
Exp (ks): 60
Extended: N

Extent Size:

Background Restriction: N

Remarks:

Constraint Details

Monitor: Y

Criteria: We request the observing time to be split into 12 observations each 5 ks long, to cover the hard state, (possible) state transitions, and (possible) the decay back to the hard state, preferably 5 observations in each stage. Considering the unpredictable evolving timescale of black hole transients (especially if the source does a state transition), a two-day cadence is preferred.

Phase Dependent: N

Epoch:
Period:
Min:
Max:
Remarks:

Specific Time: Y

Start: 2022-02-18 00:00 UTC
End: 2022-03-14 00:00 UTC
Remarks: NICER has only observed this source till 2021-10-28. We can trigger our GO program from 2022-02-18, with a two-day cadence and a 5 ks exposure.

ToO: Y
Coordinate Observation: Y

Observatory: NUSTAR
Description: Our active GO program has 3 joint NuSTAR observations, each 20 ks long. We notice NuSTAR has only 3 observations of this source back to 2015, and all in the soft state. We request, when possible, that NICER tries to achieve some overlapping coverage given the complementary nature of the instruments which is beneficial for both spectral and timing analysis.

Uninterrupted: N

Justification:

Estimated Count Rate (cts s-1): 500.000

Requester Information

Name: MS. JINGYI WANG

Status

Request Date (UTC): 2022-02-18 16:56:01
Disposition: GO-preapproved

Date: 2022-02-23 23:04:14.814723
Reason:
Person:

Status: Withdrawn

Date: 2022-02-23 23:04:14.814723
Person:

Misc

Note:

Target Details

Nearest Target No: 6578
Nearest Taget Name: 4U_1630-472
Separation (arcmin): 0.0004
Nearby Target (<3.0'): 2000[4U_1630-47],6578[4U_1630-472]
Referenced Target Catalogue: NICER2_Xray_Target_List_V30u.csv
Sun Angle: 80.7 deg at 2022:053:19:32:16 (UTC), 93.4 deg after 2 weeks

Planned Observations

AGS6 Reference:
Planned Snapshots:

Observation Start	Observation End	Span	Mode	Observation ID
(YYYY-DDDTHH:MM:SS)	(YYYY-DDDTHH:MM:SS)	(seconds)	Man/Opt

Visibility

AGS3 Reference:
Visibility Report:

Target Name	Target ID	Visibility Start	Visibility End	Span	Initial	Final	Relative
		(YYYY-DDDTHH:MM:SS)	(YYYY-DDDTHH:MM:SS)	(seconds)	Interference	Interference	Orbits