Coverage needed TONIGHT for ASASSN-18ey = MAXI J1820+070
Active Dates: April 11, 2018 – April 13, 2018
Abstract:
Dr. Gregory Sivakoff, on behalf of many collaborators, requests assistance in monitoring the outbursting black hole X-ray binary ASASSN-18ey = MAXI J1820+070 to support a multiwavelength 'blitz' campaign taking place tonight and into tomorrow.
Justification:
MAXI J1820+070 appears to have stalled its evolution in the 'hard' state, providing an extended opportunity to study this accretion state. It might also be atypically close for a black hole X-ray binary, estimated to be only 1 kpc away, which could make it one of the nearest known black hole X-ray binaries.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| ASASSN-13aa | 13.90 | UG |
Cadence: Not Specified Precision: 100 |
Not Requested |
Spectroscopy Lines:
No spectroscopy lines provided
Photometry Filters:
No photometry filters provided
Comparison Stars:
No comparison stars provided
Co-Authorship
Observers are not eligible for co-authorship.
Additional Observer Input:
Not provided
Additional Submission Location:
Not provided
Forum URL
N/A
Notes:
Principal Investigator: Dr. Gregory Sivakoff (University of Alberta); Imported Campaign (Alert Notice #630)