Two long-term intermittent pulsars discovered in the PALFA Survey

Abstract

We report the discovery of two long-term intermittent radio pulsars in the ongoing Arecibo PALFA pulsar survey. Following discovery with the Arecibo Telescope, extended observations of these pulsars over several years at Jodrell Bank Observatory have revealed the details of their rotation and radiation properties. PSRs J1910+0517 and J1929+1357 show long-term extreme bi-modal intermittency, switching between active (ON) and inactive (OFF) emission states and indicating the presence of a large, hitherto unrecognised, underlying population of such objects. For PSR J1929+1357, the initial duty cycle was fON=0.008, but two years later this changed, quite abruptly, to fON=0.16. This is the first time that a significant evolution in the activity of an intermittent pulsar has been seen and we show that the spin-down rate of the pulsar is proportional to the activity. The spin-down rate of PSR J1929+1357 is increased by a factor of 1.8 when it is in active mode, similar to the increase seen in the other three known long-term intermittent pulsars.

arXiv comment21 pages, 7 figures, accepted by ApJ

References in corpus (29)

• Switched magnetospheric regulation of pulsar spin-down
• A periodically active pulsar giving insight into magnetospheric physics
• Pulsar Nulling and Mode Changing
• Arecibo Pulsar Survey Using ALFA. I. Survey Strategy and First Discoveries
• Canadian Hydrogen Intensity Mapping Experiment (CHIME) Pathfinder
• Rocking the Lighthouse: Circumpulsar Asteroids and Radio Intermittency
• Toward a Realistic Pulsar Magnetosphere
• A model for nulling and mode changing in pulsars
• Synchronous X-ray and Radio Mode Switches: a Rapid Global Transformation of the Pulsar Magnetosphere
• Arecibo Pulsar Survey Using ALFA: Probing Radio Pulsar Intermittency and Transients
• PSR J1841-0500: a radio pulsar that mostly is not there
• Arecibo Pulsar Survey Using ALFA. IV. Mock Spectrometer Data Analysis, Survey Sensitivity, and the Discovery of 41 Pulsars
• Precession of the Isolated Neutron Star PSR B1828-11
• Radio and X-ray observations of the intermittent pulsar J1832+0029
• Mode Switching and Subpulse Drifting in PSR B0826-34
• Fast Radio Transient searches with UTMOST at 843 MHz
• On the Spin-Down of Intermittent Pulsars
• Emission-rotation correlation in pulsars: new discoveries with optimal techniques
• Two Modes of Partially Screened Gap
• Pulsar state switching, timing noise and free precession
• Pulsar State Switching from Markov Transitions and Stochastic Resonance
• Non-corotating models for pulsar magnetospheres
• Timing and Interstellar Scattering of Thirty-five Distant Pulsars Discovered in the PALFA Survey
• Long-term Observations of Three Nulling Pulsars
• Long-term Radio Observations of the Intermittent Pulsar B1931+24
• On the nature of the intermittent pulsar PSR B1931+24
• Evidence for chaotic behaviour in pulsar spin-down rates
• Arecibo Pulsar Survey Using ALFA. III. Precursor Survey and Population Synthesis
• Twist-induced Magnetosphere Reconfiguration for Intermittent Pulsars

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