Abstract Details
| Name: Subhadeep Ghosh Affiliation: Midnapore City College Conference ID: ASI2019_352 Title : Search for periodicity and pseudo-periodicity from High Mass X-ray binaries using wavelet techniques Authors and Co-Authors : Subhadeep Ghosh and Sabyasachi Pal Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : High mass X-ray binaries are known to exhibit periodic and pseudo-periodic temporal variation of different time-scales due to different emission mechanisms and geometric properties of binary systems. We have used a wavelet-based technique to efficiently look for various periodicity and pseudo-periodicity in X-ray emission from High Mass X-ray binaries using publicly available data from various space-based instruments such as Chandra, XMM, Swift and NuSTAR. We have detected periodicity of the order of a few days from a black hole binary system which is probably linked with the orbital motion of the system. We have also discovered pseudo-periodicity in emission from few black-hole binary systems which may be due to different reasons such as shock instability in the accretion disk, the presence of black hole spin etc. |