V2400_OPH
Masses of white dwarfs (WDs) play an important role in understanding their formation and evolution. A unique way to estimate the mass of a WD in an Intermediate Polar (IP) is to estimate the gravitational redshift of emission lines. We propose 200 kilosec XRISM observations to carry out accurate estimation of the gravitational redshift of emission lines in an IP V2400 Oph and use these measurements to accurately estimate the mass of the WD. The proposed XRISM observation would also serve as a benchmark for carrying out similar investigations for several other moderately bright IPs in future cycles and to estimate the mass of the WDs.
obsid = 201111010 / Unique Observation/Sequence Number
object = V2400_OPH / Object name
pi_name = ISLAM NAZMA / Proposal Principal Investigator Name
ra = 258.151352707561 / Right Ascension (Pointing Position) (deg)
dec = -24.2458978799446 / Declination (Pointing Position) (deg)
roll_angle = 274.125256704238 / Roll Angle (deg)
start_time = 2025-08-15T14:09:04 / Start Time of the Observation
stop_time = 2025-08-20T05:10:04 / Stop Time of the Observation
exposure = 237744.29095 / Effective Total Observation Exposure (s)
public_date= 2026-09-03 / Public Date