Relationship established between brightness and diet of black holes

Your daily selection of the latest science news!

According to (This article and its images were originally posted on Phys.org September 5, 2018 at 09:00AM.)

(Cover Image) Credit: CC0 Public Domain

A group of researchers led by Paula Sánchez-Sáez, a doctoral student in the Department of Astronomy of the Universidad de Chile, managed to determine that the rate of variability in the light emitted by material being swallowed by supermassive black holes in nuclei of active galaxies is determined by the accretion rate, that is, how much matter they are “eating.”

“The light emitted by the material that is falling (its brightness) changes a lot over time, without a stable pattern, so we say that they show variability. We know that it varies, but we still do not know clearly why. If one observes other objects, such as stars or galaxies without active nuclei, their brightness is constant over time, but if we look at galaxies with active nuclei their rises and falls, and is completely unpredictable. We studied how the amplitude of this variation in the emitted light (or in simple words, the amplitude of the variability) is related, with the average luminosity emitted by the AGN, the mass of the super massive black hole, and the AGN accretion rate (which corresponds to how much material the black hole consumes in a year). The results of our analysis show that, contrary to what was believed, the only important physical property to explain the amplitude of the variability is the AGN accretion rate,” explains the young researcher.

|

  • Got any news, tips or want to contact us directly? Feel free to email us: esistme@gmail.com.

To see more posts like these; please subscribe to our newsletter. By entering a valid email, you’ll receive top trending reports delivered to your inbox.
__

This article and its images were originally posted on [Phys.org] September 5, 2018 at 09:00AM. All credit to both the author and Phys.org | ESIST.T>G>S Recommended Articles Of The Day.

 

Donations are appreciated and go directly to supporting ESIST.Tech. Thank you in advance for helping us to continue to be a part of your online entertainment!

 

 

 

Advertisements

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.