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Matter in extreme conditions

Neutron stars represent the final evolutionary phase of massive stars (between 8 and 25 times the mass of the Sun) that end their lives as core-collapse supernovae. All the physical conditions in these objects are extreme, and for this reason they represent ideal laboratories for the exploration of the properties of matter in extreme conditions, not accessible to terrestrial experiments and not found in other astrophysical contexts. Isolated neutron stars (INSs), that is, not belonging to binary systems, are of particular interest. Explaining their physics can provide a complete understanding of the final stage of evolution of massive stars.

In recent years, the Italian scientific community has contributed at a very high level to research in the field of isolated neutron stars. The researchers operate in an international context with large collaborations, and the quality of the work benefits from the synergy that has long existed between the observational and theoretical groups active in Italy. The principal research directions include multi-wavelength observations (from the infrared to gamma-rays) of Anomalous X-ray Pulsars (AXPs) and Soft Gamma-Ray Repeaters (SGRs) and the associated modeling, optical and X-ray observations of X-ray Dim Isolated Neutron Stars (XDINSs) and of Central Compact Objects (CCOs) and the construction of detailed models of their surface emission, radio and X-ray observations of Rotating Radio Transients (RRaTs) and of transient magnetars, and the comparative study of these sources in relation to the other classes of Isolated Neutron Stars (INSs).

In an international context, as part of the study of RRaTs, the most important experiment in forthcoming years will be the HITRUN survey at the Parkes radio telescope, with an important Italian contribution. On a national scale, INAF participates in the research on isolated neutron stars in the following projects: Spectral and Timing Properties of Isolated Neutron Stars, Magnetars and Related Objects and the Study of Periodic and Aperiodic Variability of Cosmic X-ray Sources: Data mining in a Decade of Chandra/RXTE/Swift/XMM Databases.

These projects involve satellite observations in the X-ray band with XMM-Newton, Swift, Chandra, Suzaku and Rossi XTE; in the gamma-ray band with Integral; with the optical telescopes, VLT, Gemini and HST and finally in the radio with Parkes, GBT and the GMRT.

K2-3: A system of three likely sub-Neptunes

Mar 22, 2018

K2-3: A system of three likely sub-Neptunes A team led by astronomers from INAF presented a new study aimed at determining accurate masses for the three planets in orbit aroud the M-dwarf star K2-3

INAF hosts the preliminary round to set up the Cherenkov Telescope Array Observatory-ERIC

Feb 14, 2018

INAF hosts the preliminary round to set up  the Cherenkov Telescope Array Observatory-ERIC At Headquarters of the Italian National Institute for Astrophysics INAF, the kick-off round of the multilateral negotiations to establish an ERIC organization to the manage the Cherenkov Telescope Array project as part of the EU’s ESFRI infrastructure roadmap had take place

Extrasolar planets: Italy to lead the construction of the SHARK instruments on the LBT

Jan 24, 2018

Extrasolar planets: Italy to lead the construction of the SHARK instruments on the LBT The Italian institutes involved in the construction of SHARK are the INAF Observatories of Padua and Rome, responsible for the two channels, together with the Observatories of Arcetri, Milan and Trieste and the Department of Physics and Astronomy of the University of Padua