2013/10/24 by A. Y. Yang, AiYuan Yang, J. L. Han +3
Earth and Planetary Sciences · Physics and Astronomy · #Bursting #Cosmology and Gravitation Theories #Degree (music) #Geophysics and Gravity Measurements #Pulsar #Pulsars and Gravitational Waves Research #Pulse (music) #Randomness #Rotation (mathematics) #astro-ph.HE #astro-ph.SR
paper · pdf · doi:10.1007/s11433-014-5534-x
published as Science China PMA, Vol. 57, No. 8, pp. 1600-1606 (2014) · 7 pages, 4 figures. Submitted to China Science (Phys Mech Astron)
arxiv created 2013/10/24 · openalex publication_date 2014/06/20 · arxiv updated 2014/07/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Pulsar nulling is a phenomenon of sudden cessation of pulse emission for a number of periods. The nulling fraction was often used to characterize the phenomenon. We propose a new method to analyse pulsar nulling phenomenon, by involving two key parameters, the nulling degree, χ, which is defined as the angle in a rectangular coordinates for the numbers of nulling periods and bursting periods, and the nulling scale, N , which is defined as the effective length of the consecutive nulling periods and bursting periods. The nulling degree χ can be calculated by tan χ= N\rm nulling / N\rm bursting and the mean is related to the nulling fraction, while the nulling scale, N , is also a newly defined fundamental parameter which indicates how often the nulling occurs. We determined the distributions of χ and N for 10 pulsars by using the data in literature. We found that the nulling degree χ indicates the relative length of nulling to that of bursting, and the nulling scale N is found to be related to the derivative of rotation frequency and hence the loss rate of rotational energy of pulsars. Their deviations reflect the randomness of the nulling process.