ISRO XPoSat Launch: Successful launch of a Satellite to study black holes on 1st January 2024

ISRO XPoSat Launch: The Indian Space Research Organization (ISRO) launched the X-ray Polarimeter Satellite (XPoSat) on Monday, January 1, in its first space mission of 2024. The satellite lifted off from Satish Dhawan Space Center in Sriharikota at 9:10 am. Andhra Pradesh.

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ISRO XPoSat Launch is India’s Historic Step

Speech by ISRO chief S. Somnath after the successful launch of the XPoSat satellite (ISRO). After the Chandrayaan-3 and Aditya L1 missions of the Indian Ministry of Space, this is the country’s next historic step towards space exploration.

With this satellite, India will be the second country in the world after the United States to send a dedicated astronomical observatory to study black holes and neutron stars in our galaxy.

One objective of the PSLV-C58 mission is to measure X-ray polarization, which serves as an important diagnostic tool for investigating the radiation mechanisms and geometry of celestial sources.

ISRO XPoSat Launch


XPoSat (X-ray Polarimeter Satellite) is India’s first dedicated polarimetry mission to study the various dynamics of bright astronomical X-ray sources under extreme conditions. The satellite will carry two scientific payloads into low Earth orbit.

The primary payload POLIX (Polarimetry Instrument in X-rays) will measure the polarimetry parameters (degree and angle of polarisation) of 8–30 keV photons of astronomical origin in the medium X-ray energy range.

The XSPECT (X-ray Spectroscopy and Timing) payload will provide spectroscopic information in the 0.8–15 keV energy range.

The emission mechanisms of various astronomical sources such as black holes, neutron stars, active galactic nuclei, pulsar wind nebulae, etc. are based on complex physical processes and are difficult to understand.

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While spectroscopic and temporal observations from various space-based observatories provide a wealth of information, the precise nature of the emission from such sources still poses major challenges to astronomers.

Polarimetric measurements add two more dimensions to our understanding, the degree of polarization and the angle of polarization, and are therefore an excellent diagnostic tool for understanding the emission processes of astronomical sources.

It is expected that polarimetric observations in combination with spectroscopic measurements will break the biases of various theoretical models of astrophysical emission processes.

This will be the main direction of XPoSat research by the Indian scientific community.

To watch its live updates, click on the link given below:

Video by CNBC-TV18

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