Josephine Peters

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Josephine Peters

Graduate Student

I am a third year DPhil student in Astrophysics working with Matt Jarvis. I look at galaxy evolution using luminosity functions constructed from new deep radio surveys.

My current work utilises Very Large Array (VLA) and Low Frequency Array (LOFAR) observations of the XMM-LSS field at 1.5 GHz and 150 MHz respectively. Combined with optical and near-infrared data, we can look at how the number density of galaxies at different luminosities varies over cosmic history. By using two sets of radio data we can measure the spectral index of the synchrotron (non-thermal, radio) emission of each of our 560 sources. Assuming a single spectral index value for a sample can underestimate the number of low luminosity sources by one order of magnitude, therefore, by including spectral index measurements we are obtaining the most robust constraints on galaxy evolution.

Previously, I studied at the University of Manchester for an MSc by Research in Astronomy & Astrophysics and at King's College London for a BSc in Mathematics.

My MSc project looked at the infrared-radio correlation and spiral density waves in nearby galaxy M83 / NGC 5236. I worked with Rob Beswick and George Bendo.

Alongside my PhD I am an avid Science Presenter (videos and podcasting), Improviser and Artist. I also run a music blog ONBeat.

For more information, head to my website

Follow me on twitter @josieapeters