Archivi tag: pulsars

The Fast and the Furious

High-energy observations have strongly changed our view of isolated neutron stars, showing that these objects appear in a large variety of different classes and can exhibit substantial variability on time scales from milliseconds to years. Changes in flux and morphology have also been observed in the nebulae powered by the relativistic winds of energetic pulsars. Great advances have also been obtained in high-energy observations of non-thermal emission from supernova remnants. The study of these objects in the last few years has taken advantage of a multiwavelength approach, thanks to the combination of powerful X-ray satellites, such as XMM-Newton, Chandra, Swift and Suzaku, with facilities operating in the gamma-ray range (INTEGRAL, Agile, Fermi) and up to the highest energies covered by ground based Cherenkov telescopes (HESS, MAGIC, VERITAS). The purpose of this Science Workshop is to discuss our most recent results on the high-energy phenomena occurring in isolated neutron stars and related objects like pulsar wind nebulae, supernova remnants and gamma-ray binaries.

Topics:

I.

High-energy emission from rotation powered neutron stars
II. Multiwavelength properties and unification scenarios for different classes of neutron stars: Radio Pulsars, Magnetars, X-ray Dim Isolated Neutron Stars, Central Compact Objects in SNRs, etc..
III. Energetic phenomena in non-accreting neutron stars and their effects on the surroundings: Jets, Pulsar Wind Nebulae and their variability, gamma-ray binaries, etc..
IV.

Open questions and prospects for future missions/experiments

Locating Astrophysical Transients

New generation wide-field instruments, especially SKA pathfinders in the radio regime, will detect a huge number of transient sources that can be followed-up by very long baseline interferometry (VLBI) at the highest possible angular resolution. Finding and localization of these, as well as discussing the science case and realization of high resolution observations in multi-wavelength transient projects, is the main focus of the workshop. The science topics covered will be Galactic neutron stars (pulsars) and black holes, gamma-ray binaries, unidentified TeV sources, novae, supernovae, GRB, tidal disruption events and astrophysical sources of gravitational waves. The instruments and techniques to be introduced are the European VLBI Network (EVN), real-time e-VLBI, WSRT Apertif, SKA pathfinders (e-Merlin/LOFAR/ASKAP/MeerkAT/MWA/LWA) as well as transient facilities and programmes in the other parts of the electromagnetic spectrum.

Our main aims are to have both students and experienced researchers, from both the wide-field and the VLBI communities: 1) learn practical hands-on methods from each other’s fields in “school” fashion, 2) form the new collaborations needed to make this new connection of fields a success. Furthermore, by offering a scientific program of excellent confirmed speakers from across the electromagnetic and gravity-wave spectrum, we, introduce VLBI to a wider, non-radio astronomy transient community. We expect to strengthen the scientific case for a long-baseline configuration SKA as well.