| Name: Navya Raj |
| Affiliation: National Institute of Technology, Raipur |
| Conference ID: ASI2026_1087 |
| Title: Quantifying Burst Mimicry: The Impact of Stochastic Noise on Joint GW-GRB Likelihood Searches |
| Abstract Type: Poster |
| Abstract Category: High Energy Phenomena, Fundamental Physics and Astronomy |
| Author(s) and Co-Author(s) with Affiliation: Navya Raj(National Institute of Technology Raipur, Raipur – 492010, India), Harikrishnan R.(Indian Institute of Technology Indore, Indore – 453552, India), Dr. Amit Shukla(Indian Institute of Technology Indore, Indore – 453552, India), Shraddha Mohnani(Indian Institute of Technology Indore, Indore – 453552, India) |
| Abstract: Extracting faint signals from complex backgrounds remains a significant challenge due to various instrumental and observational limitations of telescopes. When a sub-threshold excess is detected, a crucial question arises: does it correspond to a real astrophysical transient, such as a Gamma-Ray Burst(GRB), or is it merely a statistical fluctuation of the background?
In this work, we study how different types of noise—white, pink, and red noise—can resemble a real burst signal in joint multi-messenger searches. We simulate these noise types and carry out a focused joint likelihood analysis using gravitational-wave(GW) triggers to guide the search in time. This method allows us to measure how often random noise can produce a false signal with high statistical significance and to test the reliability of current signal detection methods.
Our results provide important limits on the False Alarm Rate for joint electromagnetic and GW detections, improving confidence in identifying real electromagnetic counterparts to GW events in future observations. |
