Intro & Bio

Welcome to my personal page! I'm Ricardo, a graduate student in astrophysics at UC Santa Cruz, working with Enrico Ramirez-Ruiz. Here you will find basic information about me, my interests, and projects I've worked on.

I did my undergrad in physics at ITESM Monterrey. During my early undergraduate education I got interested in numerical methods because to study complicated phenomena beyond approximations that would make them analytically tractable. I like to conceptually understand the behavior of complicated systems using analytical methods (such as linear analysis and order-of-magnitude estimates) and then running simulations to watch it develop beyond linear regimes.

In the summer of 2017 I worked at the Institute of Astronomy of the National Autonomous University of Mexico, where I helped analyze V1082 Sgr's lightcurve. Our findings have been published in Tovmassian et al., 2018.

After that, I spent a year and a half at the University of Illinois. I worked with professor Charles Gammie on numerical radiative transfer models of slowly accreting black holes. In particular, we were interested in the bremsstrahlung emission from the inner part of the accretion disk.

Research

I'm broadly interested in theoretical and computational astrophysics, and more specifically in compact objects and numerical methods for astrophysical fluid dynamics.

Slowly accreting black holes

Black holes like the one in the center of our galaxy and M87 are thought to accrete at rates considerably lower than their Eddington accretion rates. The main question we're trying to answer is: What is the relative importance of bremsstrahlung and inverse Compton scattering in the x-ray part of the spectrum as a function of the accretion rate?

To answer this, we use numerical models of the accretion flow onto these two black holes and compute observables, such as spectra and light curves. We then try to understand our results from simple analytical estimates.

Side projects

These are some non-research projects I've done during my free time or as part of technical courses.

Personal

I like music and spend a lot of my free time listening to it. I enjoy mostly music from the common practice period. If pressured, I'd say my favorite composer is Schubert.

Even though I don't do them very often anymore, I enjoy outdoor activities and sports, such as jogging, ultimate frisbee, and soccer.

Finally, I like writing numerical codes for a variety of problems (mostly related to fluids), see "side projects".

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i = 0;

while (!deck.isInOrder()) {
    print 'Iteration ' + i;
    deck.shuffle();
    i++;
}

print 'It took ' + i + ' iterations to sort the deck.';

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Item One Ante turpis integer aliquet porttitor. 29.99
Item Two Vis ac commodo adipiscing arcu aliquet. 19.99
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