16–19 Sept 2024
Rome, Italy
Europe/Rome timezone

Follow-up a signal deepened into noise: the challenge of blind continous gravitational wave searches

18 Sept 2024, 14:55
25m
Aula Cabibbo (CU033 FISICA E. FERMI - ground floor) (Rome, Italy)

Aula Cabibbo (CU033 FISICA E. FERMI - ground floor)

Rome, Italy

Sapienza University - Piazzale Aldo Moro 5
Contributed Talk Gravitational waves Gravitational Waves

Speaker

Lorenzo Mirasola (Istituto Nazionale di Fisica Nucleare)

Description

The impressive computational cost required to probe a vast parameter space forces blind searches for Continuous Gravitational Waves (CW) to undertake a semi-coherent approach. On top of that, the sensitivity to CW depends on the coherent segment's length and obviously on the total observation time. Hence, searches have to be supported by follow-up pipelines where this baseline is gradually increased. Since follow-ups have to deal with $O(10^{5-6}$) outliers, their tuning is of crucial importance towards the first detection. In fact, just by accepting more candidates, searches can achieve better sensitivities at the price of higher false alarm probabilities.
Starting from a brief introduction to blind searches, this talk will focus on follow-up pipelines. Lastly, implications on sensitivities will be discussed.

Primary author

Lorenzo Mirasola (Istituto Nazionale di Fisica Nucleare)

Presentation materials