Where are Radio sources within the Cosmic Web?

Type: Poster
SessionPosters (Monday & Tuesday)
Author: Diego Lockyer

Abstract: Rubin will collect more galaxies in its first year of operations than in the history of astronomy. These galaxies are organized into groups and clusters, connected in the cosmic web by vast cosmological filaments which themselves host significant luminosity and mass. Previously, authors have speculated that a significant fraction of bent double-lobe radio galaxies (bDLRGs) could be found in cosmic web filaments. In this project, we build toward forecasting expectations for what will be found with the LSST in the Southern Hemisphere by using data that already exists in the north. We match filaments in a redshift slice of z~0.2 identified in the Sloan Digital Sky Survey, to 55  bDLRGs from the FIRST radio survey in the same redshift slice. Preliminary results find that ~45% of radio sources are within 10 Mpc of a filament. Furthermore, ~20% of radio sources are within 10 Mpc of a filament and also beyond 10 Mpc of a cluster. This population may be comprised of bDLRGs located within cosmic web filaments. Future work will include measuring the bend in the radio jets and using it to estimate the maximum density of the medium of the host filament.  The pipelines for catalog matching and visualization are all built within the Rubin Science Platform, in order to prepare for extending the work into the Cosmic Web mapped by LSST, once those results come online.

 

Career Stage: 
Undergrad Student

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