The Square Kilometre Array (SKA)

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The Thousand-Pulsar-Array programme on MeerKAT -- X. Scintillation arcs of 107 pulsars

(2022)

Authors:

RA Main, A Parthasarathy, S Johnston, A Karastergiou, A Basu, AD Cameron, MJ Keith, LS Oswald, B Posselt, DJ Reardon, X Song, P Weltevrede
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MIGHTEE: Deep 1.4 GHz Source Counts and the Sky Temperature Contribution of Star Forming Galaxies and Active Galactic Nuclei

(2022)

Authors:

CL Hale, IH Whittam, MJ Jarvis, PN Best, NL Thomas, I Heywood, M Prescott, N Adams, J Afonso, Fangxia An, RAA Bowler, JD Collier, RHW Cook, R Davé, BS Frank, M Glowacki, PW Hatfield, S Kolwa CC Lovell, N Maddox, L Marchetti, LK Morabito, E Murphy, I Prandoni, Z Randriamanakoto, AR Taylor
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Optical Spectroscopy of Blazars for the Cherenkov Telescope Array -- II

(2022)

Authors:

E Kasai, P Goldoni, S Pita, DA Williams, W Max-Moerbeck, O Hervet, G Cotter, M Backes, C Boisson, J Becerra González, U Barres de Almeida, F D'Ammando, V Fallah Ramazani, E Lindfors
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A Quarter Century of Guitar Nebula/Filament Evolution

The Astrophysical Journal American Astronomical Society 939:2 (2022) 70-70

Authors:

Martijn de Vries, Roger W Romani, Oleg Kargaltsev, George Pavlov, Bettina Posselt, Patrick Slane, Niccolo’ Bucciantini, C-Y Ng, Noel Klingler

Abstract:

We have collected a new deep Chandra X-Ray Observatory exposure of PSR B2224+65 and the "Guitar Nebula," mapping the complex X-ray structure. This is accompanied by a new Hubble Space Telescope (HST) Hα image of the head of the Guitar. Comparing the HST and Chandra structures in four epochs over 25 yr, we constrain the evolution of the TeV particles that light up the filament. Cross-field diffusion appears to be enhanced, likely by the injected particles, behind the filament's sharp leading edge, explaining the filament width and its evolving surface brightness profile...
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Constraints on axionlike particles from a combined analysis of three flaring $\textit{Fermi}$ flat-spectrum radio quasars

(2022)

Authors:

James Davies, Manuel Meyer, Garret Cotter
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