Wednesday, June 28, 2017
News

New simulations provide clues to galaxies' mass

   SocialTwist Tell-a-Friend    Print this Page   COMMENT

Washington | June 05, 2014 12:01:13 AM IST
 
A new set of simulations have revealed that the energy released by individual stars within galaxies can have a substantial effect on where matter is located in the universe.

The Feedback in Realistic Environments, or FIRE, project is the culmination of a multiyear, multiuniversity effort that-for the first time-simulates the evolution of galaxies from shortly after the Big Bang through today.

The first simulation to factor in the realistic effects of stars on their galaxies, FIRE results suggest that the radiation from stars is powerful enough to push matter out of galaxies.

Philip Hopkins, assistant professor of theoretical astrophysics at the California Institute of Technology (Caltech) and lead author of a paper resulting from the project., said people have guessed for a long time that the 'missing physics' in these models was what they call feedback from stars.

He said when stars form, they should have a dramatic impact on the galaxies in which they arise, through the radiation they emit, the winds they blow off of their surfaces, and their explosions as supernovae.

A zoomed-in view of evolving stars within galaxies allows the researchers to see the radiation from stars and supernova explosions blowing large amounts of material out of those galaxies.

When they calculate the amount of matter lost from the galaxies during these events that feedback from stars in the simulation accurately accounts for the low masses that have been actually observed in real galaxies.

But once stars push this matter out of the galaxy, where does it go is a question, which the researchers hope to answer by combining their simulations with new observations in the coming months. (ANI)

Watch News Videos

 
  LATEST COMMENTS (0)
POST YOUR COMMENT
Comments Not Available
 
POST YOUR COMMENT
 
TRENDING TOPICS
 
 
 
CITY NEWS
MORE CITIES
INDIA WORLD ASIA
IT raids at leading Beedi firm in TN...
Sangam Advisors receives two LoA from MA...
Key accused in 1993 serial blast case, M...
Engineer in net...
Farmers suicide toll goes up to 445 till...
Pondy needs close watch by Centre: LG...
More...    
 
 Top Stories
IAS, HCS officers transferred in Ha... 
Food Safety Act 2006: Punjab to org... 
"Fjord" wins the main event... 
SW Monsoon to further advance into ... 
Callysto Fashion launches brand of ... 
Rupee marginally fall by two paise ... 
Woman killed by lightning in Bhind... 
Lightning kills 5 in MP...