Astronomy postgraduate personal statement example

Personal statement example

At about three in the morning, on the night reception desk of the small hotel where I work, I run the night audit. Every room charge, card payment and cancelled booking has to agree before the system will roll over to the next day, and when it does not, the discrepancy is usually something small: a breakfast charged twice, or a refund entered against the wrong room. I have done this for two years, and I have come to like the particular patience it needs. The same patience turned out to be the most useful thing I brought to my final-year project, and it is a large part of why I want to continue into postgraduate study in astronomy.

My project used publicly available light curves from the TESS satellite to study a delta Scuti star, a type of pulsating star whose brightness varies over periods of hours or less because of several oscillation modes acting together. I downloaded the data, removed points flagged as unreliable, and used a Lomb-Scargle periodogram to identify the dominant frequencies. The first periodogram looked convincing but contained peaks that were simply artefacts of gaps in the observing sequence. Learning to tell a real frequency from an alias, by checking the spectral window and prewhitening one frequency at a time, took most of a term. By the end I had extracted a set of frequencies that were stable between separate sectors of data, and I could explain why I trusted each one. My supervisor's main comment was that the methods chapter was clear enough for someone else to repeat the work, which I valued more than the mark.

The project left me with questions I could not answer from photometry alone. A light curve tells you that a star is oscillating and at which frequencies, but identifying which modes are which, and what that implies about the star's interior, needs spectroscopy and stellar models that I have only met in outline. I have since worked through the relevant chapters of Carroll and Ostlie's An Introduction to Modern Astrophysics on stellar structure and pulsation, and I have started teaching myself to read spectra properly using archival data. I would like a programme that gives me formal training in observational techniques across more than one wavelength range, including radio, which my degree covered only briefly, and the chance to work on a research project with real data and real uncertainty.

My undergraduate modules prepared me reasonably well for this. I did best in electromagnetism, statistical physics and computational physics, where I wrote most of my code in Python. I was weaker in the early quantum mechanics modules, but I retook the problem sheets over a summer and did noticeably better in the later atomic physics course.

Outside study, the hotel job has taught me to stay calm and methodical when tired, and to deal politely with guests who arrive at midnight with a lost booking. I also share an allotment plot with my mother, which involves very little astronomy beyond noticing how much earlier the frosts come on clear nights. It does involve keeping a planting record over several seasons, and I find I enjoy looking back through it as much as the gardening itself.

What I can offer a postgraduate programme is a solid physics foundation, practical experience of handling a real astronomical dataset from raw download to defensible result, and a habit of checking my work until the numbers agree. I want to build on that with deeper training in observation and theory, and I would expect to work hard to do so.