Apr 3 – 5, 2023
Kodaikanal Solar Observatory
Asia/Kolkata timezone

Spectral and timing properties of GX 17+2 using AstroSat and NICER simultaneous view

Apr 5, 2023, 2:20 PM
10m
Auditorium (Kodaikanal Solar Observatory)

Auditorium

Kodaikanal Solar Observatory

Indian Institute of Astrophysics, Kodaikanal- 624 103 India
Short Talks Short Talks

Speaker

Sree Bhattacherjee (Tezpur University)

Description

We report the analysis of the Z-track NS-LMXB GX 17+2 using the simultaneous data from the AstroSat (LAXPC/SXT) and NICER mission data. On segmenting the HID into three slices—horizontal branch, hard apex, and normal branch- we investigate the source's variability and spectral state evolution throughout the observation. We performed the timing analysis in all the branches separately to probe the presence of aperiodic variability. We determined the photon lag behavior, which is found to follow a hard lag trend. The variation of the spectral parameters like the coronal temperature, photon index, blackbody temperature, and other obtained parameters along the track will also be represented. Then we compare the results of the two missions.

Presentation Type Oral

Primary author

Sree Bhattacherjee (Tezpur University)

Co-authors

Biplob Sarkar (Department of Applied Sciences, Tezpur University) Dr Jayashree Roy (IUCAA) Ranjeev Misra (Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune) Yashpal Bhulla

Presentation materials

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