Pulsars with gigahertz-peaked spectra

Abstract

We investigate a high frequency turn-over effect in radio spectra for pulsars with positive or flat spectral index. Using GMRT and Effelsberg observatory, we estimated the flux density to reconstruct pulsar spectra. We find objects that have a maximum flux in their spectrum above 1 GHz and whose spectral indices are positive at lower frequencies. Some pulsars with a turn-over in their spectrum at high frequencies are found to exist in very interesting environments. We call these objects gigahertz-peaked spectra pulsars.

10 pages, accepted for publication in Astronomy & Astrophysics

References in corpus (17)

• The ATNF Pulsar Catalogue
• The ATNF Pulsar Catalogue
• Multifrequency Observations of Radio Pulse Broadening and Constraints on Interstellar Electron Density Microstructure
• Pulsar spectra of radio emission
• The Parkes multibeam pulsar survey: IV. Discovery of 180 pulsars and parameters for 281 previously known pulsars
• Pulsar Timing for the Fermi Gamma-ray Space Telescope
• XMM-Newton observations of PSR B1823-13: An asymmetric synchrotron nebula around a Vela-like pulsar
• Chandra Observation of PSR B1823-13 and its Pulsar Wind Nebula
• The Frequency Evolution of Interstellar Pulse Broadening from Radio Pulsars
• X-ray emission from PSR B1800-21, its wind nebula, and similar systems
• PSR J1740+1000: A Young Pulsar Well Out Of The Galactic Plane
• Turn-over in pulsar spectra around 1 GHz
• Observations of pulsars at 9 millimetres
• A flexible format for exchanging pulsar data
• Nature of eclipsing pulsars
• Pulsars in the Westerbork Northern Sky Survey
• Scattering of Low-Frequency Radiation by a Gyrating Electron

Cited by in corpus (41)

• Spectral properties of 441 radio pulsars
• The pulsar spectral index distribution
• The FAST Galactic Plane Pulsar Snapshot survey: I. Project design and pulsar discoveries
• A Study of Multi-frequency Polarization Pulse Profiles of Millisecond Pulsars
• A LOFAR census of non-recycled pulsars: average profiles, dispersion measures, flux densities, and spectra
• Pulsar Observations Using the First Station of the Long Wavelength Array and the LWA Pulsar Data Archive
• The analysis of the largest sample of multi-frequency pulsar scatter time estimates
• Detecting pulsars in the Galactic centre
• Pulse broadening analysis for several new pulsars and anomalous scattering
• On gigahertz spectral turnovers in pulsars
• Spectral Flattening at Low Frequencies in Crab Giant Pulses
• Simultaneous Multi-band Radio & X-ray Observations of the Galactic Center Magnetar SGR 1745$-$2900
• 5 GHz TMRT observations of 71 pulsars
• Time-domain and spectral properties of pulsars at 154 MHz
• Flux-density spectral analysis for several pulsars and two newly-identified gigahertz-peaked spectra
• Gigahertz-peaked spectra pulsars and thermal absorption model
• Unusually bright single pulses from B1744-24A binary: a case of strong lensing?
• The frequency dependence of scattering imprints on pulsar observations
• Thermal absorption as the cause of gigahertz-peaked spectra in pulsars and magnetars
• Spectrum evolution in binary pulsar B1259-63/LS 2883 Be star and gigahertz-peaked spectra
• The LOFAR Tied-Array All-Sky Survey: Timing of 21 pulsars including the first binary pulsar discovered with LOFAR
• The study of multi-frequency scattering of ten radio pulsars
• pulsar_spectra: A pulsar flux density catalogue and spectrum fitting repository
• An 86-GHz search for Pulsars in the Galactic Center with the Atacama Large Millimeter/submillimeter Array
• Do radio magnetars J1550-5418 and J1622-4950 have gigahertz-peaked spectra?
• Simultaneous radio and X-ray observations of PSR B0611+22
• Time variation in the low frequency spectrum of Vela-like pulsar B1800-21
• Explaining the statistical properties of Fast Radio Bursts with suppressed low-frequency emission
• Flux density measurements of GPS candidate pulsars at 610 MHz using interferometric imaging technique
• Gigahertz-peaked spectra pulsars in Pulsar Wind Nebulae
• Multi-frequency radio observations of the radio-loud magnetar XTE J1810-197
• High Frequency Radio Observations of Two Magnetars, PSR J1622$-$4950 and 1E 1547.0$-$5408
• Modelling of the radio spectrum evolution in the binary pulsar B1259$-$63
• Flux Density Stability and Temporal Changes in the Spectra of Millisecond Pulsars using the GMRT
• Multi-frequency observations and spectral analysis of two gigahertz-peaked spectra pulsars
• The significance of low frequency interferometric observations for the GPS pulsar flux estimation: the case of J1740+1000
• The uGMRT observations of three new GPS pulsars
• Modelling the thermal absorption and radio spectra of the binary pulsar B1259-63
• A broadband study of FRB20240114A with the Effelsberg 100-m radio telescope
• The Low-Frequency Spectra of Radio Pulsars
• Magnetar XTE J1810-197: Spectro-temporal evolution of average radio emission