Projects per year
Pulsar timing has enabled some of the strongest tests of fundamental physics. Central to the technique is the assumption that the detected radio pulses can be used to accurately measure the rotation of the pulsar. Here, we report on a broadband variation in the pulse profile of the millisecond pulsar J1643-1224. A new component of emission suddenly appears in the pulse profile, decays over four months, and results in a permanently modified pulse shape. Profile variations such as these may be the origin of timing noise observed in other millisecond pulsars. The sensitivity of pulsar-timing observations to gravitational radiation can be increased by accounting for this variability.
|Number of pages||6|
|Journal||The Astrophysical Journal Letters|
|Publication status||Published - 1 Sep 2016|
- pulsars: general
- pulsars: individual (PSR J16431224)
- stars: neutron
- 2 Finished
An upgraded pulsar timing array for gravitational wave detection
Levin, Y., Bailes, M., Hobbs, G., Manchester, R. & van Straten, W.
Australian Research Council (ARC)
21/01/14 → 31/01/16
Gravitational-wave astrophysics of binary black holes
Australian Research Council (ARC), Monash University
1/06/12 → 1/08/17