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Nasa-JAXA XRISM mission discovers iron fingerprints in active galaxy NGC 4151 – Times of India

WorldNasa-JAXA XRISM mission discovers iron fingerprints in active galaxy NGC 4151 - Times of India



NEW DELHI: In a recent scientific achievement, the XRISM (X-ray Imaging and Spectroscopy Mission), a collaborative effort between Nasa and the Japan Aerospace Exploration Agency (JAXA), has successfully identified the presence of iron in the active galaxy NGC 4151. This discovery was made using the Resolve instrument aboard XRISM, which captured crucial data from the galaxy’s center, where a supermassive black hole is actively consuming material from its surrounding accretion disk.
The spectral analysis conducted by XRISM revealed distinct iron signatures at approximately 6.5 keV, with the observed peaks and subsequent dips around 7 keV indicating interactions far more energetic than the visible spectrum can detect.This observation of iron is significant as it provides insights into the high-energy processes occurring near black holes and the composition of material in the accretion disk.
NGC 4151, often studied for its active galactic nucleus, offers a unique window into the dynamics of black holes and their ability to influence their host galaxies. The data collected by XRISM adds to our understanding of such complex celestial phenomena, further highlighting the capabilities of modern astronomical instruments in probing the universe’s mysteries.
This finding is part of ongoing research efforts to understand the universe’s energetic processes and the materials involved at a fundamental level. The combination of X-ray, optical, and radio light in the study of NGC 4151 enriches our comprehension of the universe’s structure and the violent events shaping it.





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