Timing Solution and Single-pulse Properties for Eight Rotating Radio Transients

Abstract

Rotating radio transients (RRATs), loosely defined as objects that are discovered through only their single pulses, are sporadic pulsars that have a wide range of emission properties. For many of them, we must measure their periods and determine timing solutions relying on the timing of their individual pulses, while some of the less sporadic RRATs can be timed by using folding techniques as we do for other pulsars. Here, based on Parkes and Green Bank Telescope (GBT) observations, we introduce our results on eight RRATs including their timing-derived rotation parameters, positions, and dispersion measures (DMs), along with a comparison of the spin-down properties of RRATs and normal pulsars. Using data for 24 RRATs, we find that their period derivatives are generally larger than those of normal pulsars, independent of any intrinsic correlation with period, indicating that RRATs' highly sporadic emission may be associated with intrinsically larger magnetic fields. We carry out Lomb$-$Scargle tests to search for periodicities in RRATs' pulse detection times with long timescales. Periodicities are detected for all targets, with significant candidates of roughly 3.4 hr for PSR J1623$-$0841 and 0.7 hr for PSR J1839$-$0141. We also analyze their single-pulse amplitude distributions, finding that log-normal distributions provide the best fits, as is the case for most pulsars. However, several RRATs exhibit power-law tails, as seen for pulsars emitting giant pulses. This, along with consideration of the selection effects against the detection of weak pulses, imply that RRAT pulses generally represent the tail of a normal intensity distribution.

References in corpus (19)

• The ATNF Pulsar Catalogue
• TEMPO2, a new pulsar timing package. I: Overview
• Transient radio bursts from rotating neutron stars
• The High Time Resolution Universe Pulsar Survey I: System configuration and initial discoveries
• 1E 1547.0-5408: a radio-emitting magnetar with a rotation period of 2 seconds
• RRATs: New Discoveries, Timing Solutions & Musings
• Fast radio bursts: search sensitivities and completeness
• Rocking the Lighthouse: Circumpulsar Asteroids and Radio Intermittency
• The Millisecond Radio Sky: Transients from a Blind Single Pulse Search
• The Green Bank Telescope 350 MHz Drift-scan Survey I: Survey Observations and the Discovery of 13 Pulsars
• Is pulsar B0656+14 a very nearby RRAT source?
• Searches for Giant Pulses from Extragalactic Pulsars
• The High Time Resolution Universe Survey - V: Single-pulse energetics and modulation properties of 315 pulsars
• Discovery of 28 pulsars using new techniques for sorting pulsar candidates
• A Giant Sample of Giant Pulses from the Crab Pulsar
• On the Nature of Part Time Radio Pulsars
• Pulsar radiation belts and transient radio emission
• Radio Properties of Rotating Radio Transients I: searches for periodicities and randomness in pulse arrival times
• Finding Pulsars at Parkes

Cited by in corpus (20)

• Detection of Repeating FRB 180916.J0158+65 Down to Frequencies of 300 MHz
• The FAST Galactic Plane Pulsar Snapshot Survey: II. Discovery of 76 Galactic rotating radio transients and their enigma
• A Study of Single Pulses in the Parkes Multibeam Pulsar Survey
• The second set of pulsar discoveries by CHIME/FRB/Pulsar: 14 Rotating Radio Transients and 7 pulsars
• First discovery of new pulsars and RRATs with CHIME/FRB
• Radio Properties of Rotating Radio Transients: Single Pulse Spectral and Wait Time Analyses
• A Long-term study of three rotating radio transients
• Pulse energy distribution for RRAT J0139+33 according to observations at the frequency 111 MHz
• Polarization studies of Rotating Radio Transients
• The discovery of a rotating radio transient J1918$-$0449 with intriguing emission properties with the five hundred meter aperture spherical radio telescope
• A pilot ASKAP survey for radio transients towards the Galactic Centre
• Parkes transient events: I. Database of single pulses, initial results and missing FRBs
• Investigation of four rotating radio transients properties at 111 MHz
• Exploring the single-pulse behaviours of PSR J0628+0909 with FAST
• Pushchino multibeam pulsar search -- II. Long-term variability of RRATs
• Wavelet Denoising of Radio Observations of Rotating Radio Transients (RRATs): Improved Timing Parameters for Eight RRATs
• Search for Dispersed Pulses at Declinations from +56o to +87o
• On the long-term evolution of rotating radio transients
• Polarized radio emission of RRAT J1854+0306
• RRAT J2325-0530: A Rotating Radio Transient with an Atypical Waiting-time Distribution