TMRT observations of 26 pulsars at 8.6 GHz
arXiv:1707.06432 · doi:10.3847/1538-4357/aa8170
Abstract
Integrated pulse profiles at 8.6~GHz obtained with the Shanghai Tian Ma Radio Telescope (TMRT) are presented for a sample of 26 pulsars. Mean flux densities and pulse width parameters of these pulsars are estimated. For eleven pulsars these are the first high-frequency observations and for a further four, our observations have a better signal-to-noise ratio than previous observations. For one (PSR J0742-2822) the 8.6~GHz profiles differs from previously observed profiles. A comparison of 19 profiles with those at other frequencies shows that in nine cases the separation between the outmost leading and trailing components decreases with frequency, roughly in agreement with radius-to-frequency mapping, whereas in the other ten the separation is nearly constant. Different spectral indices of profile components lead to the variation of integrated pulse profile shapes with frequency. In seven pulsars with multi-component profiles, the spectral indices of the central components are steeper than those of the outer components. For the 12 pulsars with multi-component profiles in the high-frequency sample, we estimate the core width using gaussian fitting and discuss the width-period relationship.
arXiv comment33 pages, 49 figures, 5 Tables; accepted by ApJ
References in corpus (35)
- The ATNF Pulsar Catalogue
- PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
- A study of 315 glitches in the rotation of 102 pulsars
- Pulsar spectra of radio emission
- The Parkes multibeam pulsar survey: IV. Discovery of 180 pulsars and parameters for 281 previously known pulsars
- A Study of Multi-frequency Polarization Pulse Profiles of Millisecond Pulsars
- Toward An Empirical Theory of Pulsar Emission. VII. On the Spectral Behavior of Conal Beam Radii and Emission Heights
- A LOFAR census of non-recycled pulsars: average profiles, dispersion measures, flux densities, and spectra
- Coherently Dedispersed Polarimetry of Millisecond Pulsars
- Polarization observations of 20 millisecond pulsars
- Scatter broadening measurements of 124 pulsars at 327 MHz
- Pulsar Timing at Urumqi Astronomical Observatory: Observing System and Results
- Wide-Band, Low-Frequency Pulse Profiles of 100 Radio Pulsars with LOFAR
- A connection between radio state changing and glitch activity in PSR J0742-2822
- Multi-frequency integrated profiles of pulsars
- A search for giant pulses in Vela-like pulsars
- Gamma-ray and Radio Properties of Six Pulsars Detected by the Fermi Large Area Telescope
- Polarimetric Properties of the Crab Pulsar between 1.4 and 8.4 GHz
- Absolute polarisation position angle profiles of southern pulsars at 1.4 and 3.1 GHz
- High frequency observations of southern pulsars
- Evidence of an asteroid encountering a pulsar
- Core and Conal Component Analysis of Pulsar B1237+25
- The main- interpulse interaction of PSR B1702-19
- Wide radio beams from gamma-ray pulsars
- Single-pulse radio observations of the Galactic Center magnetar PSR J1745-2900
- Frequency dependence of pulse width for 150 radio normal pulsars
- An inverse Compton scattering (ICS) model of pulsar emission: II. frequency behavior of pulse profiles
- A transient component in the pulse profile of PSR J0738-4042
- Fermi Large Area Telescope Observations of Gamma-ray Pulsars PSR J1057-5226, J1709-4429, and J1952+3252
- 17 and 24 GHz observations of southern pulsars
- 'Notches' in the Profiles of Bright Pulsars
- Time variation in the low frequency spectrum of Vela-like pulsar B1800-21
- An investigation of the absolute circular polarization in radio pulsars
- Simultaneous Observations of Giant Pulses from Pulsar PSR B0950+08 at 42 MHz and 74 MHz
- Pulse to pulse flux density modulation from pulsars at 8.35 GHz
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- The Thousand-Pulsar-Array programme on MeerKAT: -- VI. Pulse widths of a large and diverse sample of radio pulsars
- 5 GHz TMRT observations of 71 pulsars
- A LOFAR census of non-recycled pulsars: extending below 80 MHz
- Probing pulsar scattering between 120 and 280 MHz with the MWA
- Simultaneous 2.25/8.60 GHz observations of the newly discovered magnetar -- Swift J1818.0-1607
- 50-250 MHz Pulsar Census with an SKA-Low prototype station: Spectra and Polarization