Irene Di Palma

Unveiling the progenitor of SN 2023ixf: Circumstellar dust and its implications for the red supergiant problem

Fabio Ragosta, A. Simongini, Filippo Ambrosino, Matteo Imbrogno et autres

The nearby Type II supernova SN 2023ixf offers a critical test of the long-standing ‘red supergiant problem’ – the apparent absence of high-mass red-supergiant progenitors in pre-explosion imaging. We present new late-time observations of SN 2023ixf: SiFAP2 photometry (714–772 d) with a …

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Towards multi-messenger observations of core-collapse supernovae harbouring choked jets

Angela Zegarelli, Silvia Celli, S. Gagliardini, I. Bartos et autres

Over the last decade, the scenario of choked jets embedded in core-collapse supernovae (CCSNe) has garnered significant attention. The extended stellar envelopes of red supergiant (RSG) and blue supergiant (BSG) stars, both progenitors of Type II supernovae, pose a challenge to the …

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Phenomenological gravitational waveforms for core-collapse supernovae

Pablo Cerdá-Durán, Alessandro Favali, Irene Di Palma, M. Drago et autres

Galactic core-collapse supernovae (CCSNe) are a target for current generation gravitational wave detectors with an expected rate of 1-3 per century. The development of data analysis methods used for their detection relies deeply on the availability of waveform templates. However, realistic numerical …

Multi-messenger emission from astrophysical sources hidden in γ-rays

Dafne Guetta, Angela Zegarelli, Silvia Celli, S. Gagliardini et autres

Over the last decade, choked jets have attracted particular attention as potential sources of high-energy cosmic neutrinos. Testing this hypothesis is challenging because of the missing gamma-ray counterpart; hence the identification of other electromagnetic signatures is crucial. Extended H envelopes surrounding collapsing …

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CCSNe detection perspectives with Einstein Telescope

A. Veutro, Irene Di Palma, M. Drago, Pablo Cerdá-Durán

Core collapse supernovae are the most energetic explosions in the modern Universe and, because of their properties, they are considered a potential source of detectable gravitational waveforms for long time. The main obstacles to their detection are the weakness of the signal …

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Detection of gravitational waves with LIGO

Irene Di Palma