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Title: Phase shifts in multi-frequency observations of the drift bands of J0034-0721
Authors: McSweene, Samuel J.
Bhat, N. D. Ramesh
Deshpande, A.A.
Tremblay, Steven E.
Keywords: Pulsars
individual (J0034-0721)
Issue Date: Sep-2017
Publisher: Cambridge University Press
Citation: Proceedings of IAU Symposium 2017, Vol.13, p376-377
Abstract: We observed single pulses from PSR J0034-0721 (B0031-07) simultaneously at the MWA (185 MHz) and the GMRT (610 MHz). Correlation analyses reveal that the phase difference of the average profiles at the two frequencies differs from the phase difference observed between individual subpulses, indicating that the individual emission columns above the pulsar’s rotating carousel of sparks do not evolve in frequency in the same way that the global magnetosphere does. This hints at a possible departure from the dipolar field geometry in this pulsar’s emission region. Moreover, the discrepancy depends on the drift mode, suggestive of a way to constrain the emission heights associated with each drift mode.
Description: Restricted Access.
ISSN: 1743-9213
Alternative Location:
Copyright: 2018 International Astronomical Union
Appears in Collections:Research Papers (A&A)

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