1 of 10

Scintillometry 2023

ASIAA, Taipei

2 of 10

Scintillometry: achievements

  • Systematic curvature measurements (Stinebring++, Reardon+) -> screen distance, pulsar distance
  • Emission probes (Lin++, Main++) -> wider frequency coverage and cadence
  • Wavefield retrieval, holographic ISM mapping: ESEs, cusps?

​

​

3 of 10

Scintillometry: to do tasks

  • Connecting to astro communities: pulsar timing, FRBs, ISM, VLBI
  • Space communities: IPS, Ionosphere, Formosat-7

4 of 10

Plasma lenses

  • CGM mystery (Vedentham & Phinney ‘19)
  • ESE (Fiedler ‘87, Zhu+’23)
  • Polarization/birefringence

​

5 of 10

To watch for this week:

  • New/old data
  • New facilities
  • New techniques

​

6 of 10

DISCUSSION

7 of 10

Discussion

  • Crab: what do we know about lens, emission geometry?
  • Multi screen lensing: nebula vs ISM
  • IDVs: VLBI monitoring with CHIME-outriggers?

​

8 of 10

Applications:

  • Descattering for PTAs?
  • Predictive power?
  • Connection to FRBs?

​

9 of 10

Discussions

  • Definitions, convention: diffraction, refraction: geometric vs eikonal
  • What are the length scales in the ISM?
  • Tests for reconnection sheets?

​

10 of 10