Zobrazeno 1 - 10
of 173
pro vyhledávání: '"Rankin, Joanna M"'
We develop a new method for studying the Galactic magnetic field along the spiral arms using pulsar Faraday rotation measures (RMs). Our new technique accounts for the dot-product nature of Faraday rotation and also splits the associated path integra
Externí odkaz:
http://arxiv.org/abs/2410.07967
Autor:
Rankin, Joanna M.
Publikováno v:
MNRAS (2022)
We present pulsar emission beam analyses and models in an effort to examine pulsar geometry and physics at the lowest frequencies scattering permits. We consider two populations of well-studied pulsars that lie outside the Arecibo sky, the first draw
Externí odkaz:
http://arxiv.org/abs/2206.07739
Autor:
Rankin, Joanna M., Archibald, Anne, Hessels, Jason, van Leeuwen, Joeri, Mitra, Dipanjan, Ransom, Scott, Stairs, Ingrid, van Straten, Willem, Weisberg, Joel M.
Publikováno v:
2017ApJ...845...23R
The five-component profile of the 2.7-ms pulsar J0337+1715 appears to exhibit the best example to date of a core/double-cone emission-beam structure in a millisecond pulsar (MSP). Moreover, three other MSPs, the Binary Pulsar B1913+16, B1953+29 and J
Externí odkaz:
http://arxiv.org/abs/1710.11465
A quasi-periodicity has been identified in the strange emission shifts in pulsar B1859+07 and possibly B0919+06. These events, first investigated by Rankin, Rodriguez & Wright in 2006, originally appeared disordered or random, but further mapping as
Externí odkaz:
http://arxiv.org/abs/1607.01737
Bright single pulses of many radio pulsars show rapid intensity fluctuations (called microstructure) when observed with time resolutions of tens of microseconds. Here, we report an analysis of Arecibo 59.5 $\mu$sec-resolution polarimetric observation
Externí odkaz:
http://arxiv.org/abs/1502.06897
Autor:
Rankin, Joanna M.
Two entwined problems have remained unresolved since pulsars were discovered nearly 50 years ago: the orientation of their polarized emission relative to the emitting magnetic field and the direction of putative supernova ``kicks' relative to their r
Externí odkaz:
http://arxiv.org/abs/1502.05270
Precursors and postcursors (PPCs) are rare emission components detected in a handful of pulsars that appear beyond the main pulse emission, in some cases far away from it. In this paper we attempt to characterize the PPC emission in relation to the p
Externí odkaz:
http://arxiv.org/abs/1411.0117
Arecibo observations of the conal triple pulsar B1918+19 at 0.327- and 1.4-GHz are used to analyse its subpulse behaviour in detail. We confirm the presence of three distinct drift modes (A,B,C) plus a disordered mode (N) and show that they follow on
Externí odkaz:
http://arxiv.org/abs/1304.7697
Autor:
Mitra, Dipanjan, Rankin, Joanna. M.
Lyne & Manchester (1988) identified a group of some 50 pulsars they called "partial cones" which they found difficult to classify and interpret. They were notable for their asymmetric average profiles and asymmetric polarization position-angle (PPA)
Externí odkaz:
http://arxiv.org/abs/1011.0556
Autor:
Kloumann, Isabel M., Rankin, Joanna M.
We present a single pulse study of pulsar B1944+17, whose non-random nulls dominate nearly 70% of its pulses and usually occur at mode boundaries. When not in the null state, this pulsar displays four bright modes of emission, three of which exhibit
Externí odkaz:
http://arxiv.org/abs/1007.1950