A new perspective on GCRT J1745-3009

TL;DR

This study reanalyzed radio observations of GCRT J1745-3009, ruling out symmetric burst models and supporting the transient white dwarf pulsar hypothesis, while highlighting remaining uncertainties about its fundamental nature.

Contribution

The paper provides new constraints on GCRT J1745-3009's properties and refines its possible models through reanalysis of existing data, excluding certain hypotheses.

Findings

Symmetric burst models are excluded.

Transient white dwarf pulsar model is favored.

Further uncertainties about the source remain.

Abstract

Two WSRT observations were performed and five archival VLA data were reduced in order to redetect the enigmatic radio transient GCRT J1745-3009. The source was not redetected. We were, however, able to extract important new information from the discovery dataset. Our reanalysis excludes models that predict symmetric bursts, but the transient white dwarf pulsar is favoured. Although we now have more contraints on the properties of this source, we are still unsure about its basic model.