English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report detections of scintillation arcs for pulsars in globular clustersM5, M13 and M15 for the first time using the Five-hundred-meter ApertureSpherical radio Telescope (FAST). From observations of these arcs at multipleepochs, 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 $1.3_{-1.0}^{+0.7}$ kpcfrom Earth in the directions of M5, M13 and M15, respectively. This means M5'sand 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 scintillationtimescale and decorrelation bandwidth for each pulsar at each epoch using theone-dimensional auto-correlation in frequency and time of the dynamic spectra.We found that the boundary of the Local Bubble may have caused the scatteringof M15, and detected the most distant off-plane scattering screens to datethrough pulsar scintillation, which provides evidence for understanding themedium circulation in the Milky Way.

Galactic Interstellar Scintillation Observed from Four Globular Cluster Pulsars by FAST