All Questions
3 questions
5
votes
1
answer
67
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How to interpret illumination in "pulsar cannonball" image
This beautiful image (from APOD) looks like the trail of the ejected pulsar is illuminating a ball of gas and dust. My eye sees patches of light and shadow, but sometimes images can be deceptive. What ...
- 3,974
3
votes
2
answers
564
views
Is there a Vela Nebula?
The Vela pulsar is a neutron star from a supernova that exploded 10,000 years ago. It spins 11 times a second. The Crab Nebula along with the central Crab Pulsar formed 1000 years ago. This pulsar ...
7
votes
1
answer
234
views
What are realistic and unrealistic values for the high energy gamma ray spectral indices of pulsar wind nebulae?
This summer, I was working on a project fitting very high energy gamma ray spectra of the Crab Nebula, a pulsar wind nebula. At energies about $\sim$1 TeV, a simple power law suffices, i.e. $\phi(E)\...
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