Tag: universe

Supercomputer Simulation to Investigate Black Hole and Galaxy Coevolution: Quasar Fueling

Pooja Kashyap

Big question regarding the formation of black holes and how they grow under different regimes have always been the holy grail for astrophysicists. Our galaxy hovers around a massive black hole which, under normal circumstances, is surrounded by spinning gases. Not much is known about these gases, however, some shine brightly, with an unceasing supply of fuel. While others go to a state of temporary dormancy and erupts again later with an influx of gases.

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X-ray Emission from Behind Black Hole: Galactic Nuclei

Pooja Kashyap

Black holes are the most fascinating phenomena in the universe. Any new finding regarding the intricacies of black hole makes us wonder how less we know about it. This uncanny object is famous for ingesting huge quantities of matter from its surroundings, beaming with glittering luminosity and spilling out small portion of this matter by means of very powerful jets.  

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Stars Spin Faster as They Age: Weakened Magnetic Braking

Pooja Kashyap

Stars are the building blocks of galaxies. Turbulence, that is, the result of chaotic changes in pressure and velocity deep within the dust clouds gives rise to some mass. This “mass” results in stellar gravity due to which, the peripheral dust and gas start to disintegrate under its own gravitational attraction. And hence, star formation takes place.

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Book Review: Astrophysics for People in a Hurry by Neil deGrasse Tyson

Pooja Kashyap

Although title of the book says Astrophysics for People in a Hurry but believe me the book has more depth than the label interprets. Neil deGrasse Tyson is an epitome of masterly skill at explaining complex scientific concepts into the most elementary and comprehensible manner. He makes astrophysics so interesting that even a person who has no inclination towards the subject will surely gravitate towards the space and evolutionary history after listening to his talks. His enthusiasm is contagious indeed.

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Tidal Disruption causes Dark Matter to Evaporate: Intra Galactic Interactions

Pooja Kashyap

Dark matter is one of the key ingredients in the understanding of evolution and in the formation of galaxies. Majority of scientists are of the view that dark matter consists of weakly interacting massive particles (WIMP). It is because of their weak interactions with matter that we see around, it becomes extremely difficult to detect.

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Center of Our Galaxy is Devoid of Stellar Populations: Cepheid Desert

Pooja Kashyap

Recent research lead by Prof Noriyuki Matsunaga and his team of astronomers at the University of Tokyo suggest that our understanding of Milky Way Galaxy is still not complete. The team discovered that major portion of the region surrounding the center of our Galaxy is devoid of young stars, a study that contradicts the conventional thinking. In an interview covered by Universe Today, Dr. Andrea Ghez, a professor of physics and astronomy at UCLA, said the probability of formation of young stars at the center of the galaxy is high.…

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NASA’s WISE Spacecraft surfaces most lustrous Galaxy in Universe: Space Evolution

Pooja Kashyap

NASA’s WISE has surfaced a far-flung galaxy, which is supposed to be shining intensely with infrared light with an intensity of nearly 300 trillion suns. The extremely luminous infrared galaxy (ELIRGs) is one of the most luminous galaxies to be discovered till date. Space evolution Chao-Wei Tsai at NASA’s JPL claimed that they have been witnessing an enormous stage of evolution taking place across galaxy. They are assuming that the source of the intense light could be from the growing spout of the galaxy’s black hole. According to Professor Andrew…

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Ripples and not Rings in the Disk of the Milky Way: Galaxy’s Structure

Pooja Kashyap

As per the latest astronomical research, the galactic disk is molded into many concentric ripples, which makes our Milk Way more than 50% larger than currently estimated. According to the study led by Professor Heidi Jo Newberg at Rensselaer Polytechnic Institute, there exists a circle of stars which is protruding towards to the outside of the Milky Way. The conclusion has been drawn by re-visiting the data that was gathered from the Sloan Digital Sky Survey three years ago.

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