| Name: | Mayuresh Surnis |
| Affiliation: | Indian Institute of Science Education and Research |
| Conference ID : | ASI2023_166 |
| Title : | Low Frequency Monitoring of Magnetar PSR J1818-1607 |
| Authors : | Mayuresh Surnis, Yogesh Maan, Bhal Chandra Joshi, Ben Stappers, Kaustubh Rajwade, Manjari Bagchi, Michael Kramer, Kuo Liu |
| Mode of Presentation: | Poster |
| Abstract Category : | Stars, ISM and Galaxy |
| Abstract : | Magnetars are neutron stars with high surface magnetic field strengths (> 10^14 G) and periods ranging between 2 − 12 s. They are characterised by transient and highly variable high-energy emission, often exhibiting luminous high-energy bursts, accompanied by erratic rotational behaviour. Only six of these stars have shown radio emission so far, which is usually observed after a high-energy flare and fades away at later times. Given this small number of radio-loud magnetars, the origin and mechanism of this emission is not well understood. Thus, any active magnetar that exhibits radio pulsations, provides an exciting prospect to study emission physics in the presence of extreme magnetic fields. In this talk, I would present results from the low frequency monitoring campaign of a radio-loud magnetar, PSR J1818-1607 carried out with the uGMRT. In our observations at Band3 (300-500 MHz) and Band4 (550-750 MHz), we see flux density variations as well as a hint of low frequency turnover similar to what was seen in another radio-loud magnetar J1809-1943. I would also discuss about the local environment of the magnetar based on radio images for the field, which is the first of its kind of study for this magnetar. |
