technology-news

Search for 'hidden black holes' just got easier

Washington, Oct 26 : A new method is set to focus on the difference of emission frequencies from molecules uniquely found around black holes, which may open the way for ithe search for a hidden black holei which is overcast with dust particles and optically invisible.


An international research team led by Takuma Izumi, a second-year masteris student of science at the University of Tokyo, and Kotaro Kohno, a professor at the University of Tokyo, successfully captured a detailed image of high-density molecular gas around an active supermassive black hole at the center of a galaxy called NGC 1097 at the highest sensitivity ever achieved.

The observation result shows that there is a unique chemical composition characterized by enhancement of hydrogen cyanide (HCN) around the black hole, which would be caused by high temperature heating of the environment surrounding the black hole.

With recent advancement in observational research, it has been revealed that many of galaxies contain a supermassive black hole at their centers.

However, the formation process of such massive black holes is yet to be discovered by modern astronomy.

A study result shows that the mass of a supermassive black hole is approximately proportional to that of the central part of the galaxy (galactic bulge).

This means that the higher mass galaxy has a higher mass black hole.

A galactic bulge is thought to evolve through numerous mergers and collisions with other galaxies which would bring a large amount of interstellar materials into a galactic center and further the evolution of a black hole.

To investigate this icoevolutioni of a galaxy and a black hole, it is necessary to study the mass of black holes in all ages as well as the kinematics of surrounding interstellar molecules that flow into the black hole.

However, the first thing we need to do is to confirm the existence of a black hole at the galactic center by observation.

A number of similar black hole exploration methods have also been proposed in optical/infrared spectra so far, but one crucial problem is that emissions at these wavelengths are absorbed by interstellar dust particles although the more active black holes contain more dust particles.

This means conventional exploration methods have difficulty in finding a black hole during the most active stage of its evolution process.

The goal of the research group is to establish a new exploration method using as reference various molecular/atomic emission lines which can be observed at millimeter/submillimeter wavelengths.

--ANI (Posted on 26-10-2013)

technology-news headlines

Soon, attack drones that can attack from ocean floor

Thinnest ever porous membrane 100,000 times thinner than human hair developed

NASA's LADEE crashes on moon as planned

Sun emits M7-class solar flare

LED bulbs can make your white shirt ineffective!

Revealed: What distracts your brain while driving

'Asteroid impact stored proof of life in glasses on earth'

Ancient tundra landscape discovered under Greenland Ice Sheet

NASA's Kepler Space Telescope finds Earth's twin

Concrete that never gets a crack!

Tiny robots to help you perform daily chores

Fossil of 325-million-year-old shark-like specie sheds light on evolution of jaws

Quick Links: Goa | Munnar | Pondicherry | Free Yearly Horoscope '2014

Comments

Your e-mail:


Your Full Name:


Type verification image:
verification image, type it in the box

Message:

Back to Top