Galactic Interstellar Scintillation Observed from Four Globular Cluster Pulsars by FAST

Abstract

We report detections of scintillation arcs for pulsars in globular clusters M5, M13 and M15 for the first time using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). From observations of these arcs at multiple epochs, we infer that screen-like scattering medium exists at distances $4.1_{-0.3}^{+0.2}$ kpc, $6.7_{-0.2}^{+0.2}$ kpc and $1.3_{-1.0}^{+0.7}$ kpc from Earth in the directions of M5, M13 and M15, respectively. This means M5's and M13's scattering screens are located at $3.0_{-0.2}^{+0.1}$ kpc and $4.4_{-0.1}^{+0.1}$ kpc above the galactic plane, whereas, M15's is at $0.6_{-0.5}^{+0.3}$ kpc below the plane. We estimate the scintillation timescale and decorrelation bandwidth for each pulsar at each epoch using the one-dimensional auto-correlation in frequency and time of the dynamic spectra. We found that the boundary of the Local Bubble may have caused the scattering of M15, and detected the most distant off-plane scattering screens to date through pulsar scintillation, which provides evidence for understanding the medium circulation in the Milky Way.

arXiv comment9 pages, 3 figures, matches the published version

References in corpus (31)

• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• DSPSR: Digital Signal Processing Software for Pulsar Astronomy
• Mean proper motions, space orbits and velocity dispersion profiles of Galactic globular clusters derived from Gaia DR2 data
• Accurate distances to Galactic globular clusters through a combination of Gaia EDR3, HST and literature data
• The Fundamental Performance of FAST with 19-beam Receiver at L Band
• Star formation near the Sun is driven by expansion of the Local Bubble
• Faint Scattering Around Pulsars: Probing the Interstellar Medium on Solar System Size Scales
• 100 Microarcsecond Resolution VLBI Imaging of Anisotropic Interstellar Scattering towards Pulsar B0834+06
• Interpretation of parabolic arcs in pulsar secondary spectra
• Theory of Parabolic Arcs in Interstellar Scintillation Spectra
• A Massive Neutron Star in the Globular Cluster M5
• Pulsar scintillations from corrugated reconnection sheets in the ISM
• The NANOGrav Nine-year Data Set: Monitoring Interstellar Scattering Delays
• Precision orbital dynamics from interstellar scintillation arcs for PSR J0437-4715
• Modelling annual and orbital variations in the scintillation of the relativistic binary PSR J1141$-$6545
• Long-term Scintillation Observations of Five Pulsars at 1540 MHz
• Green Bank Telescope Measurement of the Systemic Velocity of the Double Pulsar Binary J0737-3039 and Implications for its Formation
• Interstellar Scintillation of the Double Pulsar J0737$-$3039
• How Do Supernovae Impact the Circumgalactic Medium? I. Large-Scale Fountains Around a Milky Way-Like Galaxy
• Radio timing and optical photometry of the black widow system PSR J1518+0204C in the globular cluster M5
• A Scintillation Arc Survey of 22 Pulsars with Low to Moderate Dispersion Measures
• The Nature of Ionized Gas in the Milky Way Galactic Fountain
• 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
• Probing the local interstellar medium with scintillometry of the bright pulsar B1133+16
• The Scintillation Velocity of the Relativistic Binary Pulsar PSR J1141-6545
• Pulsar scintillation studies with LOFAR. I. The census
• Daily Observations of Interstellar Scintillation in PSR B0329+54
• The Thousand-Pulsar-Array programme on MeerKAT -- X. Scintillation arcs of 107 pulsars
• Long-term scintillation studies of EPTA pulsars. I. Observations and basic results
• Precision astrometry of pulsars and other compact radio sources in the globular cluster M15

Cited by in corpus (4)

• A discovery of Two Slow Pulsars with FAST: "Ronin" from the Globular Cluster M15
• Scintillation Arc from FRB 20220912A
• Illuminating Hidden Pulsars: Scintillation-Enhanced Discovery of Two Binary Millisecond Pulsars in M13 with FAST
• A high-Galactic-altitude scattering screen: scintillation from Globular Cluster pulsar M53A