Quasars
Quasar and Galactic Collisions
Quasars are some of the brightest and most energetic celestial objects in the known universe, discovered in the 1950s. Their origins remain a mystery, but a recent study by the Universities of Sheffield and Hertfordshire sheds new light on the ..
Month: Current Affairs - May, 2023
Category: Science & Technology Current Affairs
Astronomers discover the farthest Gamma-ray emitting active galaxy
The scientists from Aryabhatta Research Institute have discovered a new galaxy that emits gamma rays. The galaxy has been categorised as Narrow Line Seyfert 1 (NLS1). However, it is unique and different from the other NLS1s discovered so far. About ..
Tags: Active Galactic Nucleus • Aryabhatta Research Institute of Observational Sciences • Black holes • Gamma ray • NLS1
Month: Current Affairs - April, 2021
What are Dark Sirens?
A team of scientists have recently found a way to solve cosmological tensions through dark sirens. What are Dark Sirens? The Dark Sirens are nothing but gravitational waves from neutron stars or black holes. The Dark sirens can be picked ..
Tags: Dark Sirens • Gravitational wave • Hubble Constant • LIGO • Milky Way
Month: Current Affairs - April, 2021
What are Quasars? How do they help in understanding Universe?
Recently, a group of astronomers have discovered a dozen of quasars that were warped by naturally occurring cosmic lens. Warping is twisting. With this discovery, the number of known quasars have increased by 25%. This can help to determine the ..
Tags: Black hole • Cosmic rays • Expansion of Universe • Hubble Constant • Milky Way
Month: Current Affairs - April, 2021
Astronomers from Japan, Taiwan, and Princeton University discover 83 quasars powered by supermassive black holes in distant universe
Astronomers from Japan, Taiwan, and Princeton University have discovered 83 quasars powered by supermassive black holes in the distant universe, which were formed when the universe was only 5% of its current age. These quasars are lying 13 billion light-years ..
Tags: Astronomy • Black hole • Chronology of the universe • Galaxies • Physical cosmology