| Name: | Susmita Jana |
| Affiliation: | IIT Bombay |
| Conference ID : | ASI2024_438 |
| Title : | Indirect detection of pulsar emission at kHz using ground-based gravitational wave detector. |
| Authors : | Susmita Jana, Rituparno Goswami, S. Shankaranarayanan and Sunil D. Maharaj |
| Authors Affiliation: | Susmita Jana - IIT Bombay
Rituparno Goswami - UKZN, SA
S. Shankaranarayanan - IIT Bombay
Sunil D. Maharaj - UKZN, SA |
| Mode of Presentation: | Poster |
| Abstract Category : | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract : | Pulsars are a great source of coherent radio and incoherent high-energy electromagnetic(EM) waves. Magnetic dipole radiation is the simplest model that explains that a highly magnetized body, rotating at a very high speed, generates the pulses of a Pulsar, which implies that pulsars can emit electromagnetic radiation across the entire EM spectrum. However, all the Pulsars have been observed at a frequency of MHz to GHz. The observation at this high-frequency range occurs as the interstellar medium's dispersion and scattering effects prevent pulsars' detectability at a very low frequency (order of kHz). Confirming the very low-frequency pulsar emission is important to understand pulsar mechanisms and gravity interactions better. This work proposes an idea to detect these EM pulses indirectly via gravitational waves(GW) of the same frequency. We show that an EM pulse transforms into a GW while interacting with the curvature of a spherically symmetric compact object. This phenomenon is similar to the Gersenshtein Zeldovich effect, where the incoming EM (or GW) wave is converted into GW (EM) waves in the presence of a very high magnetic field. However, in our phenomenon, the curvature of the spacetime acts analogous to the magnetic field; hence, we name it 'gravitational analog to Gertsenshtein Zeldovich effect.' The ground-based LIGO detector operates at frequencies ranging from a few Hz to a few kHz, allowing us to test the pulsar emission of the frequency band.
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