Warrick

Göttingen, Germany

Age: 30

Postdoctoral researcher, Institut für Astrophysik Göttingen.

Mar
22
answered How much mass is typically ejected from a supernova?
Mar
22
revised What is meant by a "stiff" or "soft" equation of state (wrt neutron stars)?
More appropriate formatting
Mar
18
answered Do astronomers and astrophysicists more often use diameters or radii when discussing about planets, dwarf planets, exoplanets and stars?
Mar
11
comment Angular momentum in planetary disk formation
Hmmm... I'm not expert on planet formation, but a basic issue will be accumulating enough material to make a planet in the first place. For a specified amount of angular momentum, material must orbit at a certain distance from the central object. So, at first, too much material is too far away, and to get closer it has to lose angular momentum.
Mar
11
revised Existence of gusts of wind, an anomaly?
spelling in title
Mar
11
reviewed Edit suggested edit on Existence of gusts of wind, an anomaly?
Mar
5
comment Is the conversion from proto-star to main sequence an event or a process?
I wouldn't say there's no distinction in the sequence super-Jupiter$\to$brown dwarf$\to$red dwarf. It's observationally tricky but conceptually well-defined. Brown dwarfs are hot enough to partially fuse hydrogen in their cores, but not hot enough to finish it off by converting it into helium. Stars that can are regular (if small) stars. By this definition, brown dwarfs are roughly 13–80 Jupiter masses. More massive is a star; less massive a planet.
Feb
5
comment Ubuntu 14.04 not booting after error message. /tmp could not be mounted
+1 This is my preferred solution, since it's long term and shouldn't disrupt recovery settings. Thanks!
Feb
4
awarded astrophysics
Feb
3
reviewed Approve suggested edit on White Hole Formation
Feb
3
answered What does multi-periodicity mean in stellar pulsations?
Jan
12
comment How do astronomers choose their research topic?
I suspect your question is attracting downvotes because it's somewhat off topic here. It sounds better suited to the Academia StackExchange, although I don't know if they take well to questions about specific fields.
Dec
22
awarded Critic
Dec
22
comment How do you define the diameter of the Sun
As said above, all of the Sun is in hydrostatic equilibrium. The physical principle that defines the surface is really the transition from optically thick to optically thin material.
Dec
20
answered What is the exact mass of the Sun?
Dec
20
answered Are the stars in constellation located in a plane or they are in different distances
Dec
19
comment What practical considerations are there for amateur observations of transiting exoplanets?
I'd question the statistics of that detection, but that's some feat. I had no idea you'd be able to get anything at all with consumer-level hardware!
Dec
19
answered How do you define the diameter of the Sun
Dec
19
awarded Popular Question
Dec
17
comment Resolving power of ultra-telescopes
@RobJeffries: the idea of an interferometric array is the idea behind Antoine Labeyrie's "hypertelescope", which occasionally gets coverage.
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