Menu
  • NAM2017
    • Timetable
    • Delegates
    • Registration
  • Science
    • Parallel sessions
    • Plenary talks
    • Posters
    • Publishing workshop
    • Media workshop
    • Community forum
    • Special lunches
    • Hack day
  • Social
    • Welcome reception
    • Conference dinner
    • Football + BBQ evening
  • Outreach
    • Public talk
    • Outreach day
    • Media
  • Hull
    • Travel
    • Accommodation
    • Going out
    • Childcare
  • Contacts
  • NAM2017
    • Timetable
    • Delegates
    • Registration
  • Science
    • Parallel sessions
    • Plenary talks
    • Posters
    • Publishing workshop
    • Media workshop
    • Community forum
    • Special lunches
    • Hack day
  • Social
    • Welcome reception
    • Conference dinner
    • Football + BBQ evening
  • Outreach
    • Public talk
    • Outreach day
    • Media
  • Hull
    • Travel
    • Accommodation
    • Going out
    • Childcare
  • Contacts

Thursday

Abstract

id
A new method for finding and characterizing galaxy groups via low-frequency radio surveys
Galaxies in Different Environments: From Groups to Clusters
Date Submitted
2017-04-20 12:25:26
Judith Croston
Open University
I will discuss a new method to identify and characterize the thermodynamic state of large samples of evolved galaxy groups at high redshifts using high-resolution, low-frequency radio surveys. I will demonstrate that for the sub-population of morphologically regular FRII (classical double) radio galaxies, the internal pressure of the radio lobes is a reliable tracer of the external ICM pressure, and therefore that the assumption of a universal pressure profile (cf. Arnaud et al. 2010) enables the total mass and X-ray luminosity of the group/cluster environment to be estimated from the properties of the embedded radio galaxy. Using a sample of well-studied FRII radio galaxies I will demonstrate that this method enables the estimation of group/cluster X-ray luminosities to within a factor of ~2 from low-frequency radio properties alone. Our method offer the prospect of finding and characterizing the thermodynamic state of samples of ~10,000s of galaxy groups at z>1 with LOFAR and beyond z=2 with future surveys such as those planned with the SKA.

Schedule

id
date time
09:00 - 10:30
09:45
Abstract
A new method for finding and characterizing galaxy groups via low-frequency radio surveys
Thursday
Wilberforce LT-1

RASLogo

© 2023 Royal Astronomical Society

Login