| Name: Shuvajit Khatua |
| Affiliation: Raman Research Institute |
| Conference ID: ASI2026_392 |
| Title: Broadband X-ray Study of the Low-Luminosity Intermediate Polar DW Cnc |
| Abstract Type: Poster |
| Abstract Category: High Energy Phenomena, Fundamental Physics and Astronomy |
| Author(s) and Co-Author(s) with Affiliation: Vikram Rana(Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560080, India), Akash Agarwal(Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560080, India) |
| Abstract: Intermediate polars (IPs) are a subclass of magnetic cataclysmic variables characterized by magnetic field strengths of 0.1-10 MG. They are asynchronous systems in which the spin period of the white dwarf (WD) is shorter than the orbital period of the binary. IPs with hard X-ray luminosities below about 2.5 x 10^{32} cgs are classified as low-luminosity intermediate polars (LLIPs). The low accretion rates in these systems are expected to produce an extended post-shock region (PSR), resulting in weak or no Compton reflection and neutral Fe K-alpha emission at 6.4 keV. We present a broadband X-ray study of DW Cnc, one of the brightest known LLIPs, using simultaneous observations from XMM-Newton and NuSTAR. Our analysis highlights the key X-ray properties of the system, including a multi-temperature PSR continuum, complex intrinsic absorption, the presence of Fe K-alpha emission lines and detection of Compton reflection. Timing analysis reveals a strong modulation at the WD's spin period, while no significant orbital modulation is detected. The spin modulation exhibits a strong energy dependence, indicating that photoelectric absorption within the accretion flow plays a dominant role in shaping the observed variability. |
