Abstract Details

Name: Yash Bhargava
Affiliation: Inter-University Centre for Astronomy and Astrophysics
Conference ID: ASI2021_318
Title : Measuring spin of MAXI J1820+070
Authors and Co-Authors : Yash Bhargava (IUCAA), Tomaso Belloni (INAF-OAB, Merate, Italy), Gabriele Ponti (INAF-OAB, Merate, Italy), Dipankar Bhattacharya (IUCAA)
Abstract Type : Poster
Abstract Category : Stars, ISM and Galaxy
Abstract : MAXI J1820+070 is a recently discovered X-ray binary with the compact object as a black hole. The brightness of the source triggered multi-wavelength campaigns of this source from different observatories. Here we analyze the Power Density Spectra obtained from high cadence observations of the source in the hard state using NICER. The evolution of the characteristic frequencies is obtained by modelling the PDS. The correlation of the characteristic frequencies observed has been interpreted as variability occurring at a particular radius and exhibiting different relativistic precessional frequencies. Tight constraints on the spin of the black hole have been obtained by fitting the Relativistic Precession Model to the observed QPO and broad noise components.