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Wish upon two stars and double check you’re right

Corroboration and confirmation is the name of this game. Making the same measurement twice — using a different technique — is a powerful way not only to confirm the initial result, but also the method used. This paper confirms a recent detection of a binary system using light-travel time techniques. Continue reading


Biases in Astronomy: Is the M-sigma relation an upper limit?

The word “bias” shows up all the time in astronomy. What exactly does it mean? Also, how a recent study tackles the argument that the M-sigma relation may be biased. Continue reading

A new GRB-Supernova

SN 2009nz may be the sixth GRB-supernova ever confirmed spectroscopically. Continue reading

Announcing Gradhacker

Gradhacker is a new website with tips for graduate student life. Continue reading

Simulating Galaxies for Fun and Profit

Title: Galaxy Formation with Self-consistently Modeled Stars and Massive Black Holes. I: Feedback-regulated Star Formation and Black Hole Growth Authors: Ji-Hoon Kim, John H. Wise, Marcelo A. Alvarez, Tom Abel First Author’s Institution: Kavli Institute for Particle Astrophysics and Cosmology; Stanford University In previous astrobites posts, we’ve talked about how black holes eat gas and the relationship … Continue reading

Watching Dust Stick, Bounce, and Break — from 30,000 ft

Some astrophysicists must work in space – or as close as they can get – to accomplish their research. This paper discusses an experiment studying how dust can stick together and form planetesimals. Continue reading

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