Search Results - "astronomical unit"

Measurement and correction of variations in interstellar dispersion in high-precision pulsar timing by Keith, M.J., Coles, W., Shannon, R.M., Hobbs, G.B., Manchester, R.N., Bailes, M., Bhat, Ramesh, Burke-Spolaor, S., Champion, D.J., Chaudhary, A., Hotan, A.W., Khoo, J., Kocz, J., Ostowski, S., Ravi, V., Reynolds, J.E., Sarkissian, J., van Straten, W., Yardley, D.R.B.

“…Measurement of these delay variations is not only crucial for the detection of such signals, but also provides an unparalleled measurement of the turbulent interstellar plasma at astronomical unit (au) scales. In this paper we demonstrate that without consideration of wavelength-independent red noise, ‘simple’ algorithms to correct for interstellar dispersion can attenuate signals of interest to pulsar timing arrays. …”
Get full text