On the nature of Off-pulse emission from pulsars
  In Basu et al. 2011 we reported the detection of Off-pulse emission from two
long period pulsars B0525+21 and B2045-16. The pulsars were observed at a
single epoch using the 325 MHz frequency band of the Giant Meterwave Radio
Telescope (GMRT). In this paper we report a detailed study of the Off-pulse
emission from these two pulsars using multiple observations at two different
frequencies, 325 MHz and 610 MHz bands of GMRT. We report detection of
Off-pulse emission during each observation and based on the scintillation
effects and spectral index of Off-pulse emission we conclude a magnetospheric
origin. The magnetospheric origin of Off-pulse emission gives rise to various
interesting possibilities about its emission mechanism and raises questions
about the structure of the magnetosphere.
