NICER X-ray Observations of V1716 Sco
ATel #16167; M. G. Dethero (NASA GSFC/CRESST II), Emma Charles (Howard University/NASA GSFC/CRESST II), Jeremy Hare, (NASA GSFC/CUA/CRESST II), Joel B. Coley (Howard University/NASA GSFC/CRESST II), E. C. Ferrara (University of Maryland, NASA GSFC, CRESST II), K. C. Gendreau, C. B. Markwardt, Z. Arzoumanian, T. E. Strohmayer (NASA GSFC)
on 1 Aug 2023; 00:02 UT
Credential Certification: Joel Coley (joel.coley@howard.edu)
Subjects: X-ray, Cataclysmic Variable
V1716 Sco is a classical nova discovered by A. Pearce on 2023-04-20. We analyze recent NICER observations of V1716 Sco to investigate its timing properties.
NICER observed V1716 Sco beginning on 2023-07-25, for a total exposure time of 6392.9 seconds. The source was found to be in a super-soft state (SSS). The count rate decreases over time from ~90 ct/s to ~6 ct/s on 2023-07-31.
The NICER light curve of V1716 Sco shows strong modulations visible by eye. The power spectrum of the source shows strong pulsations around a period of ~80 s. However, this signal may be a SSS QPO as this period appears to be slightly varying. Folding the light curve on the strongest period of 78.2 +/- 5.5 s shows sinusoidal modulations with an amplitude of 27%.
Observations with NICER are continuing and the schedule can be found at: https://heasarc.gsfc.nasa.gov/docs/nicer/schedule/nicer_sts_current.html.
NICER is a 0.2-12 keV X-ray telescope operating on the International Space Station. The NICER mission and portions of the NICER science team activities are funded by NASA.
