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13 papers · 1 filter
Tentative Blazar Candidate EP240709A Associated with 4FGL J0031.5-5648: NICER and Archival Multiwavelength Observations
Mason Ng, Jeremy Hare, Gaurava K. Jaisawal +3
We report on follow-up observations of the recently discovered transient by the Einstein Probe, EP240709A, with the Neutron star Interior Composition Explorer (NICER). We also inco…
Cocoon shock, X-ray cavities and extended Inverse Compton emission in Hercules A: clues from Chandra observations
F. Ubertosi, Y. Gong, P. Nulsen +7
We present a detailed analysis of jet activity in the radio galaxy 3C348 at the center of the galaxy cluster Hercules A. We use archival Chandra data to investigate the jet-driven…
Pulsed and Polarized X-ray Emission from Neutron Star Surfaces
Matthew G. Baring, Hoa Dinh Thi, George A. Younes +1
The intense magnetic fields of neutron stars naturally lead to strong anisotropy and polarization of radiation emanating from their surfaces, both being sensitive to the hot spot p…
Multiwavelength study of 1eRASS J085039.9-421151 with eROSITA NuSTAR and X-shooter
Aafia Zainab, Artur Avakyan, Victor Doroshenko +23
The eROSITA instrument on board Spectrum-Roentgen-Gamma has completed four scans of the X-ray sky, leading to the detection of almost one million X-ray sources in eRASS1 only, incl…
Recurring tidal disruption events a decade apart in IRAS F01004-2237
Luming Sun, Ning Jiang, Liming Dou +16
We report the discovery of a second optical flare that occurred in September 2021 in IRAS F01004-2237, where the first flare occurred in 2010 has been reported, and present a detai…
Towards Modelling AR Sco: Generalised Particle Dynamics and Strong Radiation-Reaction Regimes
L. Du Plessis, C. Venter, A. K. Harding +3
Numerical simulations of relativistic plasmas have become more feasible, popular, and crucial for various astrophysical sources with the availability of computational resources. Th…