Journal
NATURE ASTRONOMY
Volume 3, Issue 12, Pages 1143-1148Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41550-019-0844-6
Keywords
-
Categories
Funding
- Australian Research Council [FT160100112, DP180103155]
- McGill Space Institute postdoctoral fellowship
- Trottier Chair in Astrophysics and Cosmology
- Australian Research Council [FT160100112] Funding Source: Australian Research Council
Ask authors/readers for more resources
The 2016 Vela glitch observed by the Mount Pleasant radio telescope provides the first opportunity to study pulse-to-pulse dynamics of a pulsar glitch, opening up new possibilities to study the neutron star's interior. We fit models of the star's rotation frequency to the pulsar data, and present the following three results. First, we constrain the glitch rise time to less than 12.6 s with 90% confidence, almost three-times shorter than the previous best constraint. Second, we find definitive evidence for a rotational-frequency overshoot and fast relaxation following the glitch. Third, we find evidence for a slowdown of the star's rotation immediately before the glitch. The overshoot is predicted theoretically by some models; we discuss implications of the glitch rise and overshoot decay times on internal neutron-star physics. The slowdown preceding the glitch is unexpected; we propose the slowdown may trigger the glitch by causing a critical lag between crustal superfluid and the crust.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available