High Energy Astrophysics

Main Projects:

The High Energy Astrophysics Group (HEAG) at the Astronomical Observatory of Rome is dedicated to studying the most energetic and violent phenomena in the universe. Observations in the X-ray and gamma-ray bands, integrated with data from other parts of the electromagnetic spectrum, are used by researchers to investigate a variety of cosmic objects and processes.

Main research areas include:

Active Galactic Nuclei (AGN): These are the luminous cores of some galaxies, powered by supermassive black holes accreting matter. Their study aims to understand the physical properties and emission mechanisms of AGN, and how they influence the evolution of their host galaxies.
Gamma Ray Bursts (GRB): GRBs are extremely powerful cosmic explosions that release vast amounts of energy in a short time. HEAG’s research activity on GRBs focuses on understanding their characteristics to unveil their origins and underlying physical processes.
Neutron Stars and Pulsars: These extremely dense and compact stellar remnants emit intense radiation. Their properties are investigated to gain deeper insights into matter under extreme conditions.
Black Holes: In addition to AGN, the group studies stellar-mass black holes, examining accretion processes and associated high-energy emissions.

Instruments and Collaborations:

HEAG participates in international space missions such as XMM-Newton, INTEGRAL, and Swift, which provide crucial data for their research. They collaborate with research institutes and universities worldwide, contributing to high-profile scientific projects.

Objectives:

The group aims to improve understanding of the physical processes that govern high-energy sources in the universe. Through observational data analysis and the development of theoretical models, they seek to answer fundamental questions about the origin and evolution of these phenomena.

In summary, the High Energy Astrophysics Group at the Astronomical Observatory of Rome plays a key role in the study of the most energetic cosmic phenomena, significantly contributing to the advancement of our knowledge of the universe.

Involved Personnel:

Staff: Filippo Ambrosino (2022), Piergiorgio Casella (2011), GianLuca Israel (2000), Andrea Melandri (2017), Maria Teresa Menna (2001), Alessandro Papitto (2016), Silvia Piranomonte (2016)
Postdocs: Roberta Amato (2023–), Francesco Carotenuto (2024–), Riccardo La Placa (2023–), Christian Malacaria (2024–)
PhD Students: Caterina Ballocco (2024–), Giulia Illiano (2021–2024), Matteo Imbrogno (2021–2024)
(Astro)Physics Students: Francesco Giacomobono (2024–), Alessandra Nevola (2024–)

Proposed Theses (Topics):

Magnetars, Search and study of new X-ray pulsars and/or pulsating ULXs, Jets in X-ray binaries, The challenge of optical millisecond pulsars.