The mode switching of PSR B2020+28

Wen, Z. G.; Wang, Na; Yan, W. M.; Yuan, Jianping; Liu, Z. Y.; Chen, M. Z.; Chen, J. L.

doi:10.1007/s10509-016-2755-7

Cited by 16 publications

(9 citation statements)

References 30 publications

(40 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We had also tried to search for GPs in our data at three frequencies. However, after correction for scintillation effects (Wen et al 2016), we failed to find any bright pulses with an energy larger than 10 times the average pulse energy.…”

Section: Discussionmentioning

confidence: 70%

Simultaneous 50 cm/10 cm Single-pulse Polarization Observations of PSR J0953+0755

Rejep¹,

Yan²,

Wang³

2022

Res. Astron. Astrophys.

View full text Add to dashboard Cite

We report on simultaneous single-pulse observations of PSR J0953+0755 at 732 and 3100 MHz made using the Parkes 64-m radio telescope at two epochs. Another non- simultaneous 1369 MHz observation has also been analyzed to compare polarization properties of this pulsar at different frequencies. The previously reported low-level bridge emission between the interpulse and the main pulse is notably present at 732 MHz. However, the bridge emission becomes very weak or undetectable at higher frequencies. The cross-correlation analysis of simultaneous observations indicates that the total intensity of single pulses is highly correlated, which implies a same emission mechanism responsible for the two frequencies. We confirm that the abrupt PA jumps are non-orthogonal in this pulsar which probably result from the overlapping emission from two non-orthogonal polarization modes and the separation between different polarization modes is frequency dependent. At all three frequencies, the dominant modes are clearly associated with negative values of circular polarization, but the association seems unclear for weak modes.

show abstract

Section: Discussionmentioning

confidence: 70%

Simultaneous 50 cm/10 cm Single-pulse Polarization Observations of PSR J0953+0755

Rejep¹,

Yan²,

Wang³

2022

Res. Astron. Astrophys.

View full text Add to dashboard Cite

show abstract

“…They showed that the energy distribution for the majority of the pulsars could be well described by a lognormal distribution. In addition, the study of the energy distribution from the mode-changing and nulling pulsars revealed that they exhibit multiple energy states (Wen et al 2016a(Wen et al , 2020. The energy distributions of giant pulses, which follow a power-law distribution, suggest that the giant pulse phenomenon is distinct from the regular pulsar radio emission (Chen et al 2020;Wen et al 2021).…”

Section: Pulse Energy Distributionmentioning

confidence: 99%

Investigation of Periodic Modulation Behaviors from Pulsar J2022+5154

Chen,

Wen,

Wang

et al. 2024

ApJ

Self Cite

View full text Add to dashboard Cite

We have carried out a detailed study of individual pulse emission from the pulsar J2022+5154 (B2021+51), observed at 2250 MHz using the Jiamusi 66 m radio telescope. We have investigated the modulations in single-pulse behavior using fluctuation spectral analysis, which shows the presence of two prominent periodicities, around 5 and 40 rotation periods, respectively. The shorter periodicity is associated with the phenomenon of subpulse drifting. In the absence of aliasing, the emission pattern is demonstrated to consist of eight subbeams, which rotate around the magnetic axis in about 45 periods. In addition to subpulse drifting, the pulsar also shows the presence of periodic amplitude modulation with a longer periodicity in the single-pulse sequence. The pulsar joins a select group that shows the presence of periodic phase-modulated drifting as well as amplitude-modulated drifting. This provides further evidence for the two phenomena being distinct from each other with different physical origins.

show abstract

“…The data from each frequency channel were folded at the apparent pulsar period to form subintegrations of typical duration around 1 minute. The calibrated observations were provided by a digital filterbank system (DFB) with a frequency resolution of 0.5 MHz, or 1024 channels across the full band (Wen et al 2016a). The full-Stokes spectra were acquired in a 512 MHz bandwidth centered at 1556 MHz radio frequency.…”

Section: Observations and Data Reductionmentioning

confidence: 99%

Investigation of Mode Changing, Pulse Nulling and Subpulse Drifting Properties in the Asymmetric Conal Triple Radio Pulsar B2319+60

Ling

Wen²,

Wang³

et al. 2022

Res. Astron. Astrophys.

View full text Add to dashboard Cite

We report on a detailed analysis on the mode changing, nulling and subpulse drifting behaviour of the conal triple pulsar B2319+60 at 1.5 GHz observed with Nanshan 25-m radio telescope. The pulsar’s proﬁle can be interpreted as resulting from a sightline traverse which cuts across an outer cone and tangentially grazes an inner cone. About 30 per cent nulls are found to create alternating bunches of nulls and emission in a quasi-periodic manner with an averaged ﬂuctuation rate of about 4 rotation periods (P1). The presence of two distinct drift modes (A and ABN) plus a phase-stationary non-drift emission mode (B) are conﬁrmed, and each corresponds to a different pulse proﬁle. The mode A is dominated by a phase modulation in the trailing component with a circulation time around of 7P1 . In addition to a 3P1 phase modulation in the leading component, mode ABN presents an amplitude modulation in the leading and trailing components with a period around of 40P1 . The emission region and geometry remain constant during mode changing. The diversity seen in the individual pulse behaviour of the pulsar B2319+60 provides a unique window into the emission physics.

show abstract

The mode switching of PSR B2020+28

Cited by 16 publications

References 30 publications

Simultaneous 50 cm/10 cm Single-pulse Polarization Observations of PSR J0953+0755

Simultaneous 50 cm/10 cm Single-pulse Polarization Observations of PSR J0953+0755

Investigation of Periodic Modulation Behaviors from Pulsar J2022+5154

Investigation of Mode Changing, Pulse Nulling and Subpulse Drifting Properties in the Asymmetric Conal Triple Radio Pulsar B2319+60

Contact Info

Product

Resources

About