Filippo Frontera
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Filippo Frontera has a total of 12 co-authors. Here are the top co-authors by number of shared publications:
- Andrea Rossi
INAF – Osservatorio di Astrofisica e Scienza dello Spazio
1 shared publication - Bing Zhang
The University of Hong Kong
1 shared publication - Cristiano Guidorzi
INAF -Osservatorio di Astrofisica e Scienza dello Spazio Via P. Gobetti 101, I-40129 Bologna Italy
1 shared publication - Eliana Palazzi
INAF – Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
1 shared publication - Elisabetta Maiorano
INAF -Osservatorio di Astrofisica e Scienza dello Spazio Via P. Gobetti 101, I-40129 Bologna Italy
1 shared publication - Fabrizio Cogato
INAF -Osservatorio di Astrofisica e Scienza dello Spazio Via P. Gobetti 101, I-40129 Bologna Italy
1 shared publication
Latest Publications
- Open Access
The Ep-Liso correlation: A new diagnostic tool for kilonova transients
The AT2017gfo kilonova transient remains a unique multi-messenger event thanks to its proximity (z=0.00987) and the possibility to investigate time-resolved spectra, providing evidence of r-process nucleosynthesis. The kilonova signal was extensively studied in the spectral and time domains, giving key insights into the chemical composition and physical properties of the ejecta. Here, we report the discovery of a novel correlation between two fundamental observables: the peak energy of the EF_E spectrum, Ep, and the isotropic-equivalent luminosity, Liso. In particular, we show that up to about 2.5 days after the merger, the AT2017gfo spectrum evolves according to: log10[Ep/eV] = -0.13 (+0.02/-0.02) + 0.62 (+0.02/-0.02) * log10[Liso/(1e41 erg/s)] (68% C.L.) while in subsequent epochs, Ep remains almost constant with Liso, flattening around 1 eV. Exploiting simulations from a state-of-the-art radiative transfer code, we demonstrate that our kilonova model inherently predicts this peculiar correlation, suggesting a new diagnostic tool for comparing observables against simulations. Future kilonova observations will provide additional insight into the physics behind the Ep-Liso correlation.
Open AccessThe Ep-Liso correlation: A new diagnostic tool for kilonova transients
The AT2017gfo kilonova transient remains a unique multi-messenger event thanks to its proximity (z=0.00987) and the possibility to investigate time-resolved spectra, providing evidence of r-process nucleosynthesis. The kilonova signal was extensively studied in the spectral and time domains, giving key insights into the chemical composition and physical properties of the ejecta. Here, we report the discovery of a novel correlation between two fundamental observables: the peak energy of the EF_E spectrum, Ep, and the isotropic-equivalent luminosity, Liso. In particular, we show that up to about 2.5 days after the merger, the AT2017gfo spectrum evolves according to: log10[Ep/eV] = -0.13 (+0.02/-0.02) + 0.62 (+0.02/-0.02) * log10[Liso/(1e41 erg/s)] (68% C.L.) while in subsequent epochs, Ep remains almost constant with Liso, flattening around 1 eV. Exploiting simulations from a state-of-the-art radiative transfer code, we demonstrate that our kilonova model inherently predicts this peculiar correlation, suggesting a new diagnostic tool for comparing observables against simulations. Future kilonova observations will provide additional insight into the physics behind the Ep-Liso correlation.