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Probing the emission mechanism and magnetic field of neutrino blazars with multiwavelength polarization signatures
(IOP Publishing, 2019)
The characteristic two-component blazar spectral energy distribution (SED) can be of either leptonic and/or hadronic origins. The potential association of the high-energy neutrino event IceCube-170922A with the flaring ...
Cascading constraints from neutrino-emitting blazars: the case of TXS 0506+056
(IOP Publishing, 2019)
We present a procedure to generally constrain the environments of neutrino-producing sites in photomeson production models of jetted active galactic nuclei (AGNs) where any origin of the dominant target photon field can ...
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, ...
Pressure balance and intrabinary shock stability in rotation-powered-state redback and transitional millisecond pulsar binary systems
(IOP Publishing, 2018)
A number of low-mass millisecond pulsar (MSP) binaries in their rotation-powered state exhibit double-peaked X-ray orbital modulation centered at inferior pulsar conjunction. This state, which has been known to persist for ...
Gamma-gamma absorption in the broad line region radiation fields of gamma-ray blazars. ERRATUM. (2016, ApJ, 821, 102)
(IOP Publishing, 2018)
In the published article, our code to evaluate the γγ opacity due to the BLR radiation field contained a numerical error, due to which all opacities are a factor of 2π too low. The corrected Figures 2-4 are shown below. ...
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 ...