activity
19982026
most citedPlanck 2013 results. XVI. Cosmological parameters

6.6k citations · 31.1k across the 367 of their papers we have counts for

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Showing astro-ph.HEShow all

14 papers · 1 filter

astro-ph.HE2026

Euclid: Quick Data Release (Q1) -- Optical hotspots in powerful radio galaxies

M. J. Hardcastle, L. Bisigello, M. Bondi +154

The hotspots of powerful radio galaxies are the sites of high-energy particle acceleration, but radio observations give us limited information on the electron energy distributions…

astro-ph.HE2025

Euclid Quick Data Release (Q1). The active galaxies of Euclid

Euclid Collaboration, T. Matamoro Zatarain, S. Fotopoulou +355

We present a catalogue of candidate active galactic nuclei (AGN) in the Quick Release (Q1) fields. For each source we collect multi-wavelength photometry and spec…

astro-ph.HE2020★ 13 cited

NuSTAR Observations of Abell 2163: Constraints on Non-thermal Emission

Randall Rojas Bolivar, Daniel Wik, Simona Giacintucci +4

Since the first non-thermal reports of inverse Compton (IC) emission from the intracluster medium (ICM) of galaxy clusters at hard X-ray energies, we have yet to unambiguously conf…

astro-ph.HE2017★ 19 cited

The NuSTAR Hard X-ray Survey of the Norma Arm Region

Francesca M. Fornasini, John A. Tomsick, JaeSub Hong +32

We present a catalog of hard X-ray sources in a square-degree region surveyed by NuSTAR in the direction of the Norma spiral arm. This survey has a total exposure time of 1.7 Ms, a…

astro-ph.HE2016★ 134 cited

The distribution of radioactive Ti in Cassiopeia A

Brian W. Grefenstette, Chris L. Fryer, Fiona A. Harrison +28

The distribution of elements produced in the inner-most layers of a supernova explosion is a key diagnostic for studying the collapse of massive stars. Here we present the results…

astro-ph.HE2016★ 43 cited

First NuSTAR observations of the BL Lac - type blazar PKS~2155-304: constraints on the jet content and distribution of radiating particles

G. M. Madejski, K. Nalewajko, K. K. Madsen +35

We report the first hard X-ray observations with NuSTAR of the BL Lac type blazar PKS 2155-304, augmented with soft X-ray data from XMM-Newton and gamma-ray data from the Fermi Lar…