Some Galaxies Threatened With Early Death?

The Milky Way is but one of billions.
Post Reply
Christopher K.
Posts: 4772
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Some Galaxies Threatened With Early Death?

Post by Christopher K. » July 12th, 2010, 6:27 pm

As if supermassive black holes weren't scary enough...

Asa Bluck and colleagues have used Hubble and Chandra to search for black holes in other galaxies and have reached a startling conclusion. Supermassive black holes can via their accretion disks produce radiation that rivals the sum total from all other components of the galaxy. The amount of energy released can strongly hinder a galaxy's chance to live a full life.

Galactic gas and dust needs to be cold and dense to collapse into a protoplanetary disk, thereby forming new stars and perhaps planets. But the accretion disks of supermassive black holes are so energetic--across all wavelengths--that the gas molecules are heated and dispersed, rendering new star formation unlikely.

Bluck is a Ph.D. student at the University of Nottingham. The study was an effort between that university and Imperial College London.

More information at:
Astronomy, August 2010, p. 18
http://www.alumni.nottingham.ac.uk/NetC ... x?pid=1725

Christopher K.
Posts: 4772
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Some Galaxies Threatened With Early Death?

Post by Christopher K. » April 30th, 2017, 6:12 pm

On Saturday 6 May HRPO personnel will offer the session "Galaxies" to local eight- to twelve-year-olds. The session will run from 10am to 12pm. At least four children need to be registered for the session to take place and HRPO can accept no more than sixteen children. The cost is five dollars per East Baton Rouge Parish kid, and six dollars for kids who live outside of EBR.

More information:
http://hrpo.lsu.edu/programs/academy.html

Post Reply