Radio observations of two intermittent pulsars: PSRs J1832+0029 and J1841-0500

Abstract

We present long-term observations of two intermittent pulsars, PSRs~J1832+0029 and J1841$-$0500 using the Parkes 64\,m radio telescope. The radio emission for these pulsars switches "off" for year-long durations. Our new observations have enabled us to improve the determination of the on-off timescales and the spin down rates during those emission states. In general our results agree with previous studies of these pulsars, but we now have significantly longer data spans. We have identified two unexpected signatures in the data. Weak emission was detected in a single observation of PSR~J1832$+$0029 during an "off" emission state. For PSR~J1841$-$0500, we identified a quasi-periodic fluctuation in the intensities of the detectable single pulses, with a modulation period between 21 and 36 pulse periods.

arXiv comment7 pages, 7 figures, accepted for publication in ApJ

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• A single pulse study of PSR J1022+1001
• Discovery of an Extremely Intermittent Periodic Radio Source
• Properties of the emission region in pulsars with opposite subpulse drift directions in different profile components
• Revealing the Unseen: The Discovery of Long-Awaited Radiation from the Intermittent Pulsar PSR B1931+24