Swift/XRT observation of Nova Scorpii 2023 = PNV J17224490-4137160
ATel #16005; Kirill Sokolovsky (UIUC), Kim Page (U. Leicester), Elias Aydi, Laura Chomiuk, Jay Strader (MSU), Jennifer Sokoloski (Columbia), Justin Linford (NRAO), Koji Mukai (NASA/GSFC), Franz-Josef Hambsch (Center for Backyard Astrophysics)
on 22 Apr 2023; 22:09 UT
Credential Certification: Kirill Sokolovsky (kirx@scan.sai.msu.ru)
Subjects: Optical, X-ray, Cataclysmic Variable, Nova
The optical transient PNV J17224490-4137160 was discovered
by A. Pearce on 2023-04-20.6780 and spectroscopically confirmed as
a classical nova (ATel #16003, #16004). Its GeV gamma-ray detection
by Fermi/LAT in a 24 hour integration starting on 2023-04-21.0 was
promptly reported (ATel #16002).
Swift observed PNV J17224490-4137160 for 1.9ks starting
on 2023-04-21.628 UT (23 hours post discovery and within
the Fermi/LAT analysis window). Swift/XRT detected no X-ray
source at the position of the transient with an upper limit of
0.01 cts/s - the recorded count rate is consistent with optical
loading from a V~7.3 source. Assuming kT= 2 keV thermal plasma
emission and HI column density of 4.53x10^21 cm^-2 (Kalberla et al.
2005 A&A, 440, 775) this translates to the unabsorbed 0.3-10.0 keV
flux limit of 1.1x10^-12 ergs/cm^2/s.
We thank the Neil Gehrels Swift Observatory team and PI, Brad Cenko, for rapid execution this ToO observation.
CBAT Transient Object Followup Reports for PNV J17224490-4137160
