In this page you will find some of the pictures related to the our latest results on modified gravity: "Astrophysical Tests of Modified Gravity: Constraints from Distance Indicators in the Nearby Universe" Bhuvnesh Jain, Vinu Vikram, Jeremy Sakstein. A full description of the work can be found here .




Unscreened galaxies

Screened galaxies




Angular distribution of galaxies in the local volume


AngDis


An example of cepheid variable

(This animation was generated from the image given here)
cepheid


Some images of galaxies with Hubble space telescope

For more pictures please visit hubblesite.org
Distant Spiral Galaxy NGC 4603, Home to Variable Stars
Source: Hubblesite.org


Figure below shows some of the cepheid variables in the galaxy marked in green square
Cep
Source: Hubblesite.org


The following image of the galaxy NGC 1309 was taken by HST
Hubble Snaps Images of a Pinwheel-Shaped Galaxy
Source: Hubblesite.org



Tutorial/Video

An introduction to cepheid based distance estimation can be found at hubblesite.org
This video shows the spatial position of a cepheid in the galaxy NGC 4603
This animation shows cepheid pulsation