| Name: Shubham Singh |
| Affiliation: University of Manchester |
| Conference ID: ASI2026_737 |
| Title: Pulsars in the Death Valley and Implications on Death Line Models |
| Abstract Type: Poster |
| Abstract Category: High Energy Phenomena, Fundamental Physics and Astronomy |
| Author(s) and Co-Author(s) with Affiliation: Shubham Singh(The University of Manchester, Manchester - M13 9PL, UK) |
| Abstract: In the framework of the coherent curvature radiation model of pulsar radio emission, charged particles responsible for the radio emission are generated on the polar cap in the localized pair cascade processes called sparks. When a pulsar can no longer sustain the sparking process on its polar cap, the coherent radio emission from the pulsar stops, and the pulsar is called dead. Most of the conventional death line models expect only a single spark on the polar cap of a dying pulsar.
I will present the emission properties of pulsars near the lower boundary of the period-derivative plane of the current pulsar population, which are expected to be dying. The emission properties of most of these pulsars suggest the existence of multiple sparks on their polar caps, contradicting the theoretical estimates. This work demonstrates that pulsars located at the edge of the pulsar death valley do not align with single-spark models of pulsar death, highlighting the gap between theoretical understanding and observed properties related to the pulsar death phenomenon. |
