naa a22 4500 510732224 CHVBK 20180411082957.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1134/S1063772913120056 doi (NATIONALLICENCE)springer-10.1134/S1063772913120056 Classification of radio pulsars using the principle-components method [Elektronische Daten] [A. Loginov, I. Malov] The principle-components method is used as a basis to analyze the distributions of known radio pulsars in spaces of eigenvectors of correlation matrices for various samples of pulsars and classification parameters (from 4 to 11 parameters characterizing the physical and kinematic properties of the objects). Pulsars with periods P < 0.1 s form a separate cluster, far from the cluster formed by "normal” pulsars with P ∼ 1 s, in all the studied spaces. These two groups also differ appreciably in their other parameters (period derivatives, magnetic fields, pulse widths). In particular, the spatial velocities of short-period pulsars (106 km/s) are appreciably lower than those displayed by long-period pulsars (334 km/s). The distributions of the pulsars at southern (Z < 0) and northern (Z > 0) Galactic latitudes do not differ; i.e., there is no anisotropy in the motions in these two directions perpendicular to the Galactic plane, or in the corresponding distributions of the pulsar parameters. Pleiades Publishing, Ltd., 2013 Loginov A. Pushchino State Natural Science Institute, Pushchino, Moscow region, Russia aut Malov I. Pushchino State Natural Science Institute, Pushchino, Moscow region, Russia aut Astronomy Reports Springer US; http://www.springer-ny.com 57/12(2013-12-01), 1001-1013 1063-7729 57:12<1001 2013 57 11444 https://doi.org/10.1134/S1063772913120056 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063772913120056 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Loginov A. Pushchino State Natural Science Institute, Pushchino, Moscow region, Russia aut NATIONALLICENCE 700 1- Malov I. Pushchino State Natural Science Institute, Pushchino, Moscow region, Russia aut NATIONALLICENCE 773 0- Astronomy Reports Springer US; http://www.springer-ny.com 57/12(2013-12-01), 1001-1013 1063-7729 57:12<1001 2013 57 11444 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer