ToO Information

Request ID: 40495
Request Type: NEW
ToO Urgency: ONE MONTH OR LONGER
Proposal ID:

Target Info

Target Name: CRAB PULSAR
Target No.: 20
Category: ROTATION-POWERED NEUTRON STARS
Coordinates[J2000]: (83.63308, 22.01449)
Exp (ks): 18
Extended: N

Extent Size:

Background Restriction: N

Remarks:

Constraint Details

Monitor: Y

Criteria: We are organizing the multi-wavelength observations in two sessions. The FAST observations are 2.5 hours each, while the others are longer. We, therefore, request 9 ks per observation with NICER, 18 ks in total. The two sessions are required to be in MJDs 59548-59558, 59576-59586 when the Crab pulsar is free from the Sun/Moon restrictions, with a time interval of more than 3 days.

Phase Dependent: N

Epoch:
Period:
Min:
Max:
Remarks:

Specific Time: Y

Start: 2021-11-30 14:30 UTC
End: 2022-01-07 18:30 UTC
Remarks: To avoid the target being near the Moon, we ask for observations in MJDs 59548-59558, 59576-59586. Also, to most detect low-intensity GRPs and to conduct optical observations, we request a specific time range when FAST has the best sensitivity during nighttime in Japan: to be centered on MJD 0.729 (17:30) during MJDs 59548-59558, and be centered on MJD 0.653 (15:40) during MJDs 59576-59586 in UTC.

ToO: Y
Coordinate Observation: Y

Observatory: [ALL GUARANTEED] FAST 500M (CHINA), IPRT, IBARAKI 32M, YAMAGUCHI 34M, KISO, KANATA (JAPAN)
Description: We plan multi-band simultaneous detections of pulses from the Crab pulsar in optical, radio, and X-ray bands. In the radio band, we use multi-frequency observations using FAST 500 m in China, IPRT, Ibaraki 32 m, Yamaguchi 34 m telescopes in Japan. Optical observations will be conducted by Kiso and Kanata telescopes in Japan. Observations by telescopes in Japan would be longer than those by FAST.

Uninterrupted: Y

Justification: We request NICER to observe simultaneously with FAST. Because the FAST observations are only 2 hours 20 minutes per epoch, we ask for uninterrupted observations to fully cover the FAST observations.

Estimated Count Rate (cts s-1): 11000.000

Requester Information

Name: MS. SUJIN EIE

Status

Request Date (UTC): 2021-11-03 09:54:12
Disposition: Accepted

Date: 2021-11-10 21:21:45.054499
Reason:
Person:

Status: Complete

Date: 2022-01-13 22:43:37.966535
Person:

Misc

Note:

Target Details

Nearest Target No: 20
Nearest Taget Name: PSR_B0531+21
Separation (arcmin): 0.0003
Nearby Target (<3.0'): 20[PSR_B0531+21],460[PSR_B0531_off_1p47amin],6525[PSR_B0531+21],6526[Crab_Nebula]
Referenced Target Catalogue: NICER2_Xray_Target_List_V29j.csv
Sun Angle: 150.8 deg at 2022:013:20:10:39 (UTC), 136.5 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