Work

The Low‐Frequency Spectra of Radio Pulsars

Year: 2025

Type: article

Abstract: ABSTRACT Low‐frequency spectral studies of radio pulsars represent a key method for uncovering their emission mechanisms, magnetospheric structure, and signal interactions with the surrounding interstellar medium (ISM). In recent years, more next‐generation low‐frequency radio telescopes (e.g., LOFAR, LWA and MWA) have enriched the observational window below 350 MHz, enabling more detailed explorations of the ISM effects, such as absorption and scattering, resulting in diverse spectral behaviors observed across different pulsars. This paper reviews the morphology of pulsar radio spectra, advances in spectral modeling, and the key physical processes governing the low‐frequency emission. Looking ahead, next‐generation instruments such as SKA‐Low—with their unprecedented sensitivity—are expected to resolve outstanding questions in pulsar emission processes, offering insights into the extreme physical regimes governing these exotic objects.

Source: Astronomische Nachrichten

DOI: 10.1002/asna.70029

Authors: Ting Yu, Zhong‐li Zhang, Hong‐yu Gong, Zhi‐gang Wen

Institutions: Chinese Academy of Sciences, Shanghai Astronomical Observatory, University of Chinese Academy of Sciences, Dali University, Xinjiang Astronomical Observatory

Language: English

Topic: Pulsars and Gravitational Waves Research

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze