Which instrument description on XPoSat is correct?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. POLIX measures X-ray polarization (8-30 kev) to study black holes.
POLIX (Polarimeter Instrument in X-rays) is the primary payload of India's XPoSat (X-ray Polarimeter Satellite). It is specifically designed to measure the polarization of X-rays in the medium energy range of 8-30 keV from astronomical sources like black holes, neutron stars, and pulsar wind nebulae.
By studying the degree and angle of polarization, scientists can understand the complex magnetic field structures and radiation mechanisms of these extreme cosmic objects, which is not possible through traditional spectroscopy alone.