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CTA 102 - Year over year receiving you
(Sissa Medialab, 2019)
The FSRQ CTA 102 (z=1.032) has been tremendously active over the last few years. During
its peak activity lasting several months in late 2016 and early 2017, the gamma-ray and optical
fluxes rose by up to a factor 100 ...
MSP binaries as astrophysical laboratories
(Cambridge Univ Press, 2018)
Follow-up of unidentified Fermi sources has expanded the number of known galactic-field “black widow” and “redback” millisecond pulsar binaries from four to nearly 30. Several systems observed by Chandra, XMM-Newton, Suzaku, ...
Robopol: optical polarisation monitoring of blazars
(HEASA, 2016)
The RoboPol program has been monitoring the R-band linear polarisation parameters of an unbiased
sample of 60 gamma-ray-loud blazars and a “control” sample of 15 gamma-ray-quite ones.
The prime drive for the program has ...
Observations of the flaring Fermi-LAT blazars and prospects in spectro-polarimetry with SALT-RSS
(HEASA, 2016)
The Fermi Gamma-Ray Space telescope has identified 1741 active galactic nuclei during its first four years of observation (2008-2012) and detected 1145 blazars and 573 blazar candidates of uncertain type (BCUs) as listed ...
Gamma-gamma absorption in gamma-ray burst environments
(HEASA, 2016)
Gamma-ray bursts (GRBs) are the most violent explosions in the universe, seen primarily as
bright, short flashes of g-rays. Long GRBs are most likely associated with the violent death
of a very massive star. They are ...
Multiwavelength signatures of shocks in relativistic jets
(HEASA, 2016)
Mildly relativistic, oblique shocks are frequently invoked as possible sites of relativistic particle
acceleration and production of strongly variable, polarized multi-wavelength emission from
relativistic jet sources ...
The effects of EBL inhomogeneity on the gamma-gamma absorption of VHE gamma-rays
(HEASA, 2016)
Very High Energy Gamma Rays (VHE; more than 100 GeV) from Cosmological Gamma Ray
Sources such as blazars can be absorbed by the Extragalactic Background light (EBL), which
leads to a high-energy cut-off in blazar spectral ...
High-energy emission from Black Widows and Redbacks
(Sissa Medialab, 2015)
A large number of new black widow and redback energetic millisecond pulsars with irradiated
stellar companions have been discovered through radio searches of unidentified Fermi sources.
We construct a 3D emission model ...
The aid of optical studies in understanding millisecond pulsar binaries
(Sissa Medialab, 2016)
A large number of new “black widow” and “redback” energetic millisecond pulsars with irradiated stellar companions have been discovered through radio and optical searches of unidentified
Fermi sources. Synchrotron emission, ...
Multiwavelength polarization as a diagnostic of blazar physics
(Sissa Medialab, 2015)
The nature of the high-energy emission in jet-dominated AGN (especially blazars) as well as the
location and mode of acceleration of particles to ultra- relativistic energies are a matter of intensive debate. Both leptonic ...