Periodic mode changing in PSR J1048-5832

Abstract

By analysing the data acquired from the Parkes 64-m radio telescope at 1369 MHz, we report on the phase-stationary non-drift amplitude modulation observed in PSR J1048-5832. The high-sensitivity observations revealed that the central and trailing components of the pulse profile of this pulsar switch between a strong mode and a weak mode periodically. However, the leading component remains unchanged. Polarization properties of the strong and weak modes are investigated. Considering the similarity to mode changing, we argue that the periodic amplitude modulation in PSR J1048$-$5832 is periodic mode changing. The fluctuation spectral analysis showed that the modulation period is very short (~2.1 s or 17 P1), where P1 is the rotation period of the pulsar. We find that this periodic amplitude modulation is hard to explain by existing models that account for the periodic phenomena in pulsars like subpulse drifting.

arXiv comment8 pages, 8 figures, 3 tables, accepted in MNRAS for publication

References in corpus (40)

• The ATNF Pulsar Catalogue
• The ATNF Pulsar Catalogue
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• DSPSR: Digital Signal Processing Software for Pulsar Astronomy
• A periodically active pulsar giving insight into magnetospheric physics
• The Parkes Pulsar Timing Array Project
• Pulsar Nulling and Mode Changing
• The subpulse modulation properties of pulsars at 21 cm
• PSRCHIVE and PSRFITS: Definition of the Stokes Parameters and Instrumental Basis Conventions
• Glitches in Southern Pulsars
• Polarimetry of 600 pulsars from observations at 1.4 GHz with the Parkes radio telescope
• PSR J1841-0500: a radio pulsar that mostly is not there
• Drifting Sub-Pulse Analysis Using the Two-Dimensional Fourier Transform
• The High Time Resolution Universe Survey - V: Single-pulse energetics and modulation properties of 315 pulsars
• Polarization observations of 20 millisecond pulsars
• Investigation of the bi-drifting subpulses of radio pulsar B1839-04 utilising the open-source data-analysis project PSRSALSA
• The Parkes Observatory Pulsar Data Archive
• Meterwavelength Single-pulse Polarimetric Emission Survey II: The phenomenon of Drifting Subpulses
• Radio and X-ray observations of the intermittent pulsar J1832+0029
• A survey of nulling pulsars using the Giant Meterwave Radio Telescope
• High-Energy Gamma-Ray Observations of Two Young, Energetic Radio Pulsars
• Deep Analyses of Nulling in Arecibo Pulsars Reveal Further Periodic Behavior
• Classification of Subpulse Drifting in Pulsars
• Drifting, moding, and nulling: another look at pulsar B1918+19
• Meterwavelength Single-pulse Polarimetric Emission Survey III: The Phenomenon of Nulling in Pulsars
• Two long-term intermittent pulsars discovered in the PALFA Survey
• Constraints on viewing geometries from radio observations of $\gamma$-ray-loud pulsars using a novel method
• Fermi LAT detection of pulsed gamma-rays from the Vela-like pulsars PSR J1048-5832 and PSR J2229+6114
• High frequency observations of southern pulsars
• Investigation of the unique nulling properties of PSR B0818-41
• Subpulse Drifting, Nulling and Mode changing in PSR J1822$-$2256
• On the long nulls of PSRs J1738-2330 and J1752+2359
• Polarisation profiles of southern pulsars at 3.1 GHz
• Simultaneous X-ray and radio observations of the radio-mode switching pulsar PSR B1822-09
• Subpulse Drifting, Nulling and Mode changing in PSR J2006$-$0807 with Core emission
• Periodic Q-mode modulation in PSR J1825$-$0935 (PSR B1822$-$09)
• Modal Sequencing and Dynamic Emission Properties of an 8-hour GMRT Observation of Pulsar B1822-09
• Chandra and XMM-Newton Observations of the Vela-like Pulsar B1046-58
• Radio emission features in different modes of PSR J0826+2637 (B0823+26)
• Periodic Longitude-Stationary Non-Drift Emission in Core-Single Radio Pulsar B1946+35

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