Long-term scintillation studies of EPTA pulsars. I. Observations and basic results

Abstract

Interstellar scintillation analysis of pulsars allows us to probe the small-scale distribution and inhomogeneities of the ionized interstellar medium. Our priority is to present the data set and the basic measurements of scintillation parameters of pulsars employing long-term scintillation observations carried out from 2011 January to 2020 August by the European Pulsar Timing Array radio telescopes in the 21-cm and 11-cm bands. Additionally, we aim to identify future possible lines of study using this long-term scintillation dataset. We present the long-term time series of ${\nu }_{\mathrm{d}}$ and ${\tau }_{\mathrm{d}}$ for 13 pulsars. Sanity-checks and comparisons indicate that the scintillation parameters of our work and previously published works are mostly consistent. For two pulsars, PSRs~J1857+0943 and J1939+2134, we were able to obtain measurements of the ${\nu }_{\mathrm{d}}$ at both bands, which allows us to derive the time series of frequency scaling indices with a mean and a standard deviation of 2.82$\pm$1.95 and 3.18$\pm$0.60, respectively. We found some interesting features which will be studied in more detail in subsequent papers in this series: (i) in the time series of PSR~J1939+2134, where the scintillation bandwidth sharply increases or decreases associated with a sharp change of dispersion measure; (ii) PSR~J0613$-$0200 and PSR~J0636+5126 show a strong annual variation in the time series of the ${\tau }_{\mathrm{d}}$; (iii) PSR~J1939+2134 shows a weak anti-correlation between scintillation timescale and dispersion in WSRT data.

18 pages, 6 figures, 4 tables, accepted for publication in A&A

References in corpus (16)

• TEMPO2, a new pulsar timing package. I: Overview
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• On Pulsar Distance Measurements and their Uncertainties
• The Green Bank Northern Celestial Cap Pulsar Survey - I: Survey Description, Data Analysis, and Initial Results
• Measuring pulse times of arrival from broadband pulsar observations
• Precision orbital dynamics from interstellar scintillation arcs for PSR J0437-4715
• The Origin of Radio Scintillation In the Local Interstellar Medium
• Modelling annual and orbital variations in the scintillation of the relativistic binary PSR J1141$-$6545
• Interstellar Scintillation of the Double Pulsar J0737$-$3039
• Dispersion measure variability for 36 millisecond pulsars at 150MHz with LOFAR
• Modelling annual scintillation arc variations in PSR J1643-1224 using the Large European Array for Pulsars
• Measuring Interstellar Delays of PSR J0613-0200 over 7 years, using the Large European Array for Pulsars
• Scattering study of Pulsars below 100 MHz using LWA1
• The NANOGrav 12.5-Year Data Set: Monitoring Interstellar Scattering Delays
• A comparative analysis of pulse time-of-arrival creation methods
• Profile changes associated with DM events in PSR J1713+0747

Cited by in corpus (15)

• Status Report on Global Pulsar-Timing-Array Efforts to Detect Gravitational Waves
• Variable Scintillation Arcs of Millisecond Pulsars observed with the Large European Array for Pulsars
• Scintillation Arc from FRB 20220912A
• Galactic Interstellar Scintillation Observed from Four Globular Cluster Pulsars by FAST
• Pulsar Scintillation Studies with LOFAR: II. Dual-frequency scattering study of PSR J0826+2637 with LOFAR and NenuFAR
• A Cyclic Spectroscopy Scintillation Study of PSR B1937+21 I. Demonstration of Improved Scintillometry
• Improving pulsar timing precision through superior Time-of-Arrival creation
• Associations Between Scattering Screens and Interstellar Medium Filaments
• The Pulsar Science Collaboratory: Multi-Epoch Scintillation Studies of Pulsars
• Effects of Coronal Mass Ejection on PSR J1022+1001 and Possible Mode Change of PSR J2145-0750 in the InPTA DR2
• Scintillation Bandwidth Measurements from 23 Pulsars from the AO327 Survey
• The Indian Pulsar Timing Array Data Release 2: II. Customised Single-Pulsar Noise Analysis and Noise Budget
• Pulsar Cyclic Spectroscopy in the Partial-Deconvolution Regime: Benefits & Limitations
• Constraining Scattering Medium Geometry with Cyclic Spectroscopy
• Pulsar scintillation studies with LOFAR III. Annual variations in PSR~J0814$+$7429