Swift follow-up of the newly discovered accreting millisecond X-ray pulsar MAXI J1816-195
ATel #15426; Amar Deo Chandra (IISER Kolkata)
on 9 Jun 2022; 12:32 UT
Credential Certification: Amar Deo Chandra (amar.deo.chandra@gmail.com)
Subjects: X-ray, Request for Observations, Binary, Transient, Pulsar
Following the detection of the X-ray transient MAXI J1816-195 by MAXI/GSC (Atel #15418), its localization by Swift at the location, RA/Dec(J2000) = 274.20671, -19.63306 (Atel #15421) and its classification as a millisecond pulsar by NICER (Atel #15425), a Swift ToO was performed.
Swift/XRT observed MAXI J1816-195 on 2022-06-08 beginning at 03:00:02 for a total exposure time of 1.6 ks in window timing (WT) mode. The average XRT count rate during the observation was 42 count/s. The maximum XRT count rate detected during the observation was 64 count/s. The WT mode spectrum is well described by an absorbed power-law with photon index = 1.85 +/- 0.03, with absorption N_H = 1.82 +/- 0.04 x 10^22 cm^-2. The inferred flux in 0.3-10 keV band is 3.21 +/- 0.03 x 10^-9 erg/s/cm^2.
Follow-up multi-wavelength observations are encouraged.
We thank the Swift Team, Observatory Duty Scientists, and PI, who made these observations possible.
