astrobites
simulations
Recap of the IAU Planet Formation Symposium
Highlights from the International Astronomical Union Symposium on “Exploring the Formation and Evolution of Planetary Systems”.
Where do hypervelocity stars come from?
TITLE: Supernovae in the Central Parsec: A Mechanism for Producing Spatially Anisotropic Hypervelocity Stars AUTHORS: Kastytis Zubovas, Graham A. Wynn, Alessia Gualandris AUTHORS’ INSTITUTION: Theoretical Astrophysics Group, University of Leicester Hypervelocity Stars In 2005, Brown et al. discovered a star with a radial velocity of ~700 km/s, which is more than 3 times the Solar [...]
Moving mesh code AREPO may help us understand galaxy evolution better than before
Moving mesh code AREPO looks like it will help astronomers understand the physics of galaxy formation and evolution better than its predecessors, due to an innovative new method of solving the fluid dynamics equations in astrophysical settings. This paper discusses the differences between AREPO and another code called GADGET in the case of gas accretion onto galaxies.
Seeing Galaxy formation before reionization: baryon-dark matter relative velocity helps!
Relative velocity in the early Universe between regular matter (baryons) and dark matter enhances an otherwise hard-to-detect signal and makes it likely we can look back even farther into the past.
The Top 12 of 2012
What were astronomers reading and talking about in their research last year? Check out figures from the top 12 most-cited astronomy papers from 2012 (so far) and find out what researchers were up to and why!
Asteroid Excavation: Probing the interior of Vesta through major impacts
The asteroid Vesta has been scared by two giant impacts, dredging up material from deep below its surface. New simulations of the impacts allow us to trace where the material should end up and creates a conflict between theory and observation.
The effect of magnetic fields on star formation
Boss & Keiser examine how magnetic fields with varying initial conditions affect star formation.
When Push Comes to Shove: How Wide Binaries Can Wreak Havoc on Planetary Systems
New simulations show that — due to forces from outside the stellar system — wide stellar binaries may disrupt planets much more than previously thought.
Can you hide a super-massive black hole?
Observational surveys looking for the smallest super-massive black holes come up empty; could they be hiding in plain sight?
Spinning the First Stars
In a recent paper, Stacy et al. reveal the detailed internal structure of the seeds of four of the first stars, and demonstrate for the first time that they are rapidly spinning throughout. Their results bring us one step closer to a coherent story of the lives and deaths of Population III stars.
© 2013 astrobites. All Rights Reserved.
Powered by WordPress. Designed by 