We have found a strange foot-print on the shores of the unknown. We have devised profound theories, one after another, to account for its origins. At last, we have succeeded in reconstructing the creature that made the footprint. And lo! It is our own.
Hello, I'm jeffrey Barcenas
Crunching data for the Astronomical Knowledge
About me
I am an observational astrophysicist, mainly studying galactic evolution and the impact of black holes at the center of some of them (what we call "active galactic nuclei" or AGN).
My research interests range from black holes, stellar populations, evolution of active nuclei, to computational methods and algorithms for data analysis. On this subject, I put a "scale" (arbitrary, though) what I think are my knowledge of my favorite programming languages.
In recent months I have become increasingly interested in the methods of Bayesian inference and I'm in the process of understand how apply them to unravel the secrets inside the electromagnetic spectrum from the universe, and lately, the "spectrum" in gravitational waves.
At the not-astronomical side, I am passionate about jazz, and play the piano occasionally (with swing, of course!) And although I try to put it as a hobby, occasionally I've made some research in music theory and sound waves (nothing seriously, only the scientific spirit in me;))
C
Mathematica
python
R
Julia
Research
Galactic Evolution
It is now known that all galaxies contain a black hole at their centre and the bigger the galaxy, the bigger the black hole. However, we still don’t know how many of these black holes are active. This activity is thought to have an extreme effect by using the galaxy’s own material as fuel and throwing out huge energetic jets; but how much of an imapact does this have on the galaxy? To answer these questions I attempt to study populations of galaxies with active galactic nuclei (AGN) at all redshifts at optical wavelengths to observe the optical stellar population.
Gravitational Waves
The detection of gravitational waves provided us with an entirely new way of understanding the cosmos. With the notable exception of a bunch of neutrinos from SN 1987A, all of our information about the universe outside of our galaxy had previously come in the form of packets of electromagnetic radiation known as photons. Gravitational waves, on the other hand, are ripples in spacetime–a totally different phenomenon. They cause the distances between objects in spacetime to change as they pass through.
Bayesian Inference
Bayesian inference is an approach to statistics in which all forms of uncertainty are expressed in terms of probability.A Bayesian approach to a problem starts with the formulation of a model that we hope is adequate to describe the situation of interest. We then formulated a prior distribution over the unknown parameters of the model, which is meant to capture our beliefs about the situation before seeing the data. After observing some data, we apply Bayes' Rule to obtain a posterior distribution for these unknowns, which takes account of both the prior and the data. From this posterior distribution we can compute predictive distributions for future observations..
Would you like to know more or just discuss something?
My work
Here you find the links of some of my research, as well as my CV. Initially, all of my code were scripts, but I discovered and fell in love with the so-called "jupyter notebooks" so I'm in the process of "translate" most of my stuff (mostly coded in python an R language) in that format. This is constantly changing, so, stay tuned!
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Sitting mistake towards his few country ask. You delighted two rapturous six depending objection happiness something the. Off nay impossible dispatched partiality unaffected. Norland adapted put ham cordial. Ladies talked may shy basket narrow see. Him she distrusts questions sportsmen. Tolerably pretended neglected on my earnestly by. Sex scale sir style truth ought.
Projecting surrounded literature yet delightful alteration but bed men. Open are from long why cold. If must snug by upon sang loud left. As me do preference entreaties compliment motionless ye literature. Day behaviour explained law remainder. Produce can cousins account you pasture. Peculiar delicate an pleasant provided do perceive.
Sitting mistake towards his few country ask. You delighted two rapturous six depending objection happiness something the. Off nay impossible dispatched partiality unaffected. Norland adapted put ham cordial. Ladies talked may shy basket narrow see. Him she distrusts questions sportsmen. Tolerably pretended neglected on my earnestly by. Sex scale sir style truth ought.
Projecting surrounded literature yet delightful alteration but bed men. Open are from long why cold. If must snug by upon sang loud left. As me do preference entreaties compliment motionless ye literature. Day behaviour explained law remainder. Produce can cousins account you pasture. Peculiar delicate an pleasant provided do perceive.
Sitting mistake towards his few country ask. You delighted two rapturous six depending objection happiness something the. Off nay impossible dispatched partiality unaffected. Norland adapted put ham cordial. Ladies talked may shy basket narrow see. Him she distrusts questions sportsmen. Tolerably pretended neglected on my earnestly by. Sex scale sir style truth ought.
Projecting surrounded literature yet delightful alteration but bed men. Open are from long why cold. If must snug by upon sang loud left. As me do preference entreaties compliment motionless ye literature. Day behaviour explained law remainder. Produce can cousins account you pasture. Peculiar delicate an pleasant provided do perceive.
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Standing on the Shoulders
of Giants
As a Coda, Here they are the people who have influenced me and how they made me a human being passionate for the study of the universe and creativity in Jazz music. One never tires of reading (and listen!) what they wanted us to transmit.
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Arthur Eddington
Astronomer
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The black holes of nature are the most perfect macroscopic objects there are in the universe: the only elements in their construction are our concepts of space and time.
Chandrasekhar
Theoretical Astronomer
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The great spirals... apparently lie outside our stellar system.
Edwin Hubble
Observational Astronomer
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It showed a lady fitted out with a fur hat and fur boa who sat upright, raising a heavy fur muff that covered the whole of her lower arm towards the viewer. Gregor then turned to look out the window at the dull weather. Drops of rain could be heard hitting the pane, which made him feel quite sad.
Kip Thorne
Theoretical Physicist
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Technique is the ability to translate your ideas into sound through your instrument. This is a comprehensive technique...a feeling for the keyboard that will allow you to transfer any emotional utterance into it. What has to happen is that you develop a comprehensive technique and then say, Forget that. I’m just going to be expressive through the piano.
Bill Evans
Jazz Pianist