AstroSat

Santhosh Kumar 29/11/2023
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AstroSat mind map Context India's first multi-wavelength space observatory Launched on September 28, 2015 Recent milestone Detected 600th Gamma-ray Burst (GRB) as of November 2023 Each GRB indicates massive star death or neutron star merging Mission Overview Objective Study cosmic sources across electromagnetic spectrum Focus on high-energy processes in binary star systems and neutron stars Development Follow-up to Indian X-ray Astronomy Experiment (IXAE, 1996) Approved by ISRO in 2004 Launch Details From Satish Dhawan Space Centre Using PSLV-C30 (XL) rocket Placed into 650 km, 6° inclination orbit Scientific Objectives Core focus areas Multi-wavelength monitoring of cosmic source intensity variations X-ray sky monitoring for new transients Hard X-ray and UV band sky surveys Spectroscopic studies in broad range Variability studies of X-ray sources Specific studies Periodic and non-periodic phenomena in X-ray binaries Pulsations in X-ray pulsars Active Galactic Nuclei (AGN) intensity variations Time-lag studies in X-rays and UV/optical radiation X-ray transients detection and study Instruments and Capabilities Payload Instruments Ultra Violet Imaging Telescope (UVIT) Soft X-ray Telescope (SXT) Large Area X-ray Proportional Counter (LAXPC) Cadmium Zinc Telluride Imager (CZTI) Scanning Sky Monitor (SSM) Charged Particle Monitor (CPM) Instrument Functions Multi-wavelength imaging and spectroscopy High-resolution imaging in ultraviolet and X-ray Timing and spectral studies of X-ray sources Polarization measurements in X-rays Monitoring for transient X-ray events Ground Support and Data Management Command and Control Managed by ISRO Telemetry, Tracking and Command Network (ISTRAC) Based in Bangalore, India Data Handling Daily data gathering capacity of 420 gigabits Data download during visible orbits over Bangalore Major Achievements and Discoveries Notable events detected Supernova explosions forming black holes Rare phenomena like blue stragglers Coronal explosions on Proxima Centauri X-ray polarisation variations in Crab Pulsar Observation of galaxy clusters and rare X-ray outbursts Detection of extreme-UV light from distant galaxies Future Prospects Continued observations and discoveries Potential for new insights into cosmic phenomena

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