IFPU Seminar next Friday at 11:30 - Dasgupta

[HECAP - Margherita Di Giovannantonio]

*_IFPU SEMINAR_*
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*Friday, 19 September *2025, at *11:30* - *IFPU room 
205****- https://indico.ictp.it/event/11111/*


Basudeb Dasgupta (TIFR Mumbai)



*“Probing Dark Matter with Gravitational Waves from Mergers "*
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_Abstract_

Gravitational waves open a new avenue to study dark matter through the 
dynamics of compact objects. Non-annihilating dark matter captured by 
neutron stars can induce their collapse into low-mass black holes, 
leading to subsolar-mass mergers detectable by current and future 
observatories. Such events probe dark matter–nucleon interactions at 
cross-sections below the neutrino floor and masses spanning GeV to PeV. 
Existing LIGO/Virgo data already yield strong bounds, while future 
detections could reveal dark core collapse and account for puzzles such 
as the missing pulsars near the Galactic Center. I will outline these 
constraints, the prospects for distinguishing low-mass black holes from 
neutron stars via gravitational wave signatures, and the implications 
for dark matter. Finally, I will discuss more model-independent probes 
using compact binaries near galactic centers, which can confirm or rule 
out parsec-scale density spikes and may be used to constrain broad 
classes of dark matter models.


To join via Zoom:

https://sissa-it.zoom.us/j/89203772421?pwd=lIsvgRU5J04BWgf9GzD75n9VY1pMmc.1


Meeting ID: 892 0377 2421

Passcode: 314567



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