Giada Peron
YOU?
Author Swipe
View article: A cosmic-ray loaded nascent outflow driven by a massive star cluster
A cosmic-ray loaded nascent outflow driven by a massive star cluster Open
Cosmic rays are widely held to drive outflows from star-forming galaxies and profoundly influence galaxy evolution. Direct evidence for cosmic-ray carrying outflows is however lacking. At the same time there is increasing awareness of the …
View article: Gamma-rays from Wolf-Rayet stellar winds
Gamma-rays from Wolf-Rayet stellar winds Open
Gamma-ray observations of young star clusters have recently provided evidence for particle acceleration occurring at stellar wind termination shocks, fueled by the mechanical energy of stellar winds from massive stars. In this work, we exp…
View article: Interpreting the LHAASO Galactic diffuse emission data
Interpreting the LHAASO Galactic diffuse emission data Open
Recently, the Large High-Altitude Air Shower Observatory (LHAASO) collaboration has obtained a measurement of the gamma-ray diffuse emission in the ultra-high energy range, 10–10^3 TeV after masking the contribution of known sources. The m…
View article: Hadronic acceleration in the young star cluster NGC 6611 inside the M16 region unveiled by Fermi-LAT: constraints on the acceleration efficiency
Hadronic acceleration in the young star cluster NGC 6611 inside the M16 region unveiled by Fermi-LAT: constraints on the acceleration efficiency Open
Context. Young Massive Star Clusters, long considered as potentially important sources of galactic cosmic rays, have recently emerged as gamma-ray emitters up to very high energies. Aims. In order to quantify the contribution of this sourc…
View article: Gamma-ray emission from the Seyfert galaxy NGC 4151: multi-messenger implications for ultra-fast outflows
Gamma-ray emission from the Seyfert galaxy NGC 4151: multi-messenger implications for ultra-fast outflows Open
The nuclear activity typical of Seyfert galaxies can drive powerful winds where high-energy phenomena occur. In spite of their high power content, the number of such non-jetted active galactic nuclei (AGN) detected in gamma rays is very li…
View article: Contribution of young massive stellar clusters to the Galactic diffuse γ-ray emission
Contribution of young massive stellar clusters to the Galactic diffuse γ-ray emission Open
Context. Young massive stellar clusters (YMSCs) have emerged as potential γ-ray sources after the recent association of a dozen YMSCs with extended γ-ray emission. The large size of the detected halos, comparable to that of the wind-blown …
View article: Massive star clusters in the gamma-ray sky: the role of HII regions
Massive star clusters in the gamma-ray sky: the role of HII regions Open
Massive Star Clusters (SCs) have been proposed as important CR sources, with the potential of explaining the high-energy end of the Galactic cosmic-ray (CR) spectrum, that Supernova Remnants (SNRs) seem unable to account for. Thanks to fas…
View article: Gamma ray emission from embedded young massive star clusters unveiled by Fermi-LAT
Gamma ray emission from embedded young massive star clusters unveiled by Fermi-LAT Open
Massive star clusters (SCs) have been proposed as additional contributors to Galactic Cosmic rays (CRs), to overcome the limitations of supernova remnants (SNR) to reach the highest energy end of the Galactic CR spectrum. Thanks to fast ma…
View article: Do the LHAASO Galactic diffuse emission data require a contribution from unresolved sources?
Do the LHAASO Galactic diffuse emission data require a contribution from unresolved sources? Open
The Large High-Altitude Air Shower Observatory (LHAASO) collaboration has recently measured the ultra-high energy gamma-ray diffuse emission (10 − 10 3 TeV) after masking the contribution of known sources. The observed signal appears to be…
View article: Gamma ray emission from embedded young massive star clusters unveiled by Fermi-LAT
Gamma ray emission from embedded young massive star clusters unveiled by Fermi-LAT Open
Massive star clusters (SCs) have been proposed as additional contributors to Galactic Cosmic rays (CRs), to overcome the limitations of supernova remnants (SNR) to reach the highest energy end of the Galactic CR spectrum. Thanks to fast ma…
View article: On the Correlation between Young Massive Star Clusters and Gamma-Ray Unassociated Sources
On the Correlation between Young Massive Star Clusters and Gamma-Ray Unassociated Sources Open
Star clusters (SCs) are potential cosmic-ray accelerators and therefore are expected to emit high-energy radiation. However, a clear detection of gamma-ray emission from this source class has only been possible for a handful of cases. This…
View article: Very-high-energy γ-Ray Emission from Young Massive Star Clusters in the Large Magellanic Cloud
Very-high-energy γ-Ray Emission from Young Massive Star Clusters in the Large Magellanic Cloud Open
The Tarantula Nebula in the Large Magellanic Cloud is known for its high star formation activity. At its center lies the young massive star cluster R136, providing a significant amount of the energy that makes the nebula shine so brightly …
View article: Contribution of young massive star clusters to Galactic diffuse $γ$-ray emission
Contribution of young massive star clusters to Galactic diffuse $γ$-ray emission Open
Context: Young massive stellar clusters (YMSCs) have emerged as potential $γ$-ray sources, after the recent association of a dozen YMSCs with extended $γ$-ray emission. The large size of the detected halos, comparable to that of the wind-b…
View article: H.E.S.S. observations of the 2021 periastron passage of PSR B1259-63/LS 2883
H.E.S.S. observations of the 2021 periastron passage of PSR B1259-63/LS 2883 Open
PSR B1259–63/LS 2883 is a gamma-ray binary system that hosts a pulsar in an eccentric orbit, with a 3.4 yr period, around an O9.5Ve star (LS 2883). At orbital phases close to periastron passages, the system radiates bright and variable non…
View article: Detection prospects of very and ultra high-energy gamma rays from extended sources with ASTRI, CTA, and LHAASO
Detection prospects of very and ultra high-energy gamma rays from extended sources with ASTRI, CTA, and LHAASO Open
Context. The recent discovery of several ultra high-energy gamma-ray emitters in our Galaxy represents a significant advancement towards the characterisation of its most powerful accelerators. Nonetheless, in order to unambiguously locate …
View article: The contribution of winds of star clusters to the Galactic cosmic-ray population
The contribution of winds of star clusters to the Galactic cosmic-ray population Open
Spectral energy distribution and relative uncertainties in the GeV waveband, of the star clusters in the Vela molecular cloud ridge,
View article: The local cosmic-ray spectrum probed by gamma-ray observations
The local cosmic-ray spectrum probed by gamma-ray observations Open
International audience
View article: Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations
Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations Open
Magnetic fields in galaxies and galaxy clusters are believed to be the result of the amplification of intergalactic seed fields during the formation of large-scale structures in the universe. However, the origin, strength, and morphology o…
View article: Gamma-ray observations of nearby HII regions
Gamma-ray observations of nearby HII regions Open
We present the analysis of the Fermi-LAT data in the region of the Vela Molecular Cloud Ridge (VMR). The latter is a dense region of gas located at approximately 1 kpc from us and it is the closest region that hosts intermediate-mass- and …
View article: Search for the evaporation of primordial black holes with H.E.S.S.
Search for the evaporation of primordial black holes with H.E.S.S. Open
Primordial Black Holes (PBHs) are hypothetical black holes predicted to have been formed from density fluctuations in the early Universe. PBHs with an initial mass around 10 14 –10 15 g are expected to end their evaporation at present time…
View article: Winds of star clusters significantly contribute to the Galactic cosmic-ray population
Winds of star clusters significantly contribute to the Galactic cosmic-ray population Open
Cosmic rays are energetic nuclei that permeate the entire Galactic disk. Their existence requires the presence of powerful particle accelerators. While Galactic supernova explosions may supply the required energy, there is growing evidence…
View article: Gamma-ray emission from the Seyfert galaxy NGC 4151: Multi-messenger implications for ultra-fast outflows
Gamma-ray emission from the Seyfert galaxy NGC 4151: Multi-messenger implications for ultra-fast outflows Open
The nuclear activity typical of Seyfert galaxies can drive powerful winds where high-energy phenomena occur. In spite of their high power content, the number of such non-jetted active galactic nuclei (AGN) detected in gamma rays is very li…
View article: Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations
Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations Open
Magnetic fields in galaxies and galaxy clusters are believed to be the result of the amplification of intergalactic seed fields during the formation of large-scale structures in the universe. However, the origin, strength, and morphology o…