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astronomical methods

This tag is associated with 49 posts

Cloudy with a chance of Carbon Monoxide

Tune in now for the first extrasolar weather map of a nearby brown dwarf, made using Doppler imaging.

Supernovae Photospheres as Distance Indicators

By examining their expansion rate over time, Type II supernovae provide a way to measure extragalactic distances.

Constraining fine-structure constant variations using QSOs

From measurements of quasar spectra, we can determine whether or not the fine structure constant is really a constant.

The Little Star that Could (Teach us about Stellar Astrophysics)

Today we take a look back to 1916, when distances were measured in light years and uncertainties weren’t to be included in publications. The nearly 100-year old discovery of a small star has large implications for our understanding of stellar astrophysics, even today.

Dust in SPACE: Studying the growth of planetesimals with a suborbital rocket experiment

By sending a chamber of dust on a suborbital ballistic rocket, the authors of this paper hope to find out how planetesimals form.

Astrobites on the Ice, Part 5: South Pole Station

I’m spending a month at the South Pole working on a CMB telescope. In this last post, we tour South Pole Station and run a race around the world!

Astrobites on the Ice, Part 4: A Day in the Life

I’m spending a month at the South Pole working on a CMB telescope. In this installment, I measure the telescope’s sidelobes and close up a receiver.

Astrobites on the Ice, Part 3: A Tour of DSL and MAPO

I’m spending a month working on a telescope at the South Pole. In this post, we take a tour of the two observatory buildings hosting Cosmic Microwave Background experiments.

Artist's conception of the Milky Way

The Milky Way is cut back down to size

Everything in our galaxy is moving– you, the earth underneath you, the sun, other stars– everything. However, it turns out that figuring out how fast some of these things are moving is surprisingly difficult, and can have Galactic-sized implications!

Gravitational Lensing in the Canary Islands

I recently attended a two-week crash course in the “Astrophysical Applications of Gravitational Lensing”. In this post, I overview a few of the ways astronomers employ lensing to study the Universe, from extrasolar planets to distant quasars and large-scale structure.

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