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34 papers · 2 filters
Relativistic X-ray jets at high redshift
Daniel A Schwartz, Aneta Siemiginowska, Diana M Worrall +6
Powerful radio sources and quasars emit relativistic jets of plasma and magnetic fields that travel hundreds of kilo-parsecs, ultimately depositing energy into the intra- or inter-…
Detection of a gamma-ray flare from the high-redshift blazar DA 193
Vaidehi S. Paliya, M. Ajello, R. Ojha +10
High-redshift () blazars are the most powerful members of the blazar family. Yet, only a handful of them have both X-ray and -ray detection, thereby making it difficult to…
The Megaparsec-scale Gas-sloshing Spiral in the Remnant Cool Core Cluster Abell 1763
E. M. Douglass, E. L. Blanton, S. W. Randall +4
We present a multiwavelength study of the massive galaxy cluster Abell 1763 at redshift z = 0.231. Image analysis of a 19.6 ks Chandra archival observation reveals a cluster-wide s…
A -ray determination of the Universe's star-formation history
LAT Collaboration, M. Ajello, K. Helgason +4
The light emitted by all galaxies over the history of the Universe produces the extragalactic background light (EBL) at ultraviolet, optical, and infrared wavelengths. The EBL is a…
Searching a Thousand Radio Pulsars for Gamma-ray Emission
David A. Smith, Philippe Bruel, Ismaël Cognard +15
Identifying as many gamma-ray pulsars as possible in the Fermi Large Area Telescope (LAT) data helps test pulsar emission models by comparing predicted and observed properties for…
Theoretically motivated search and detection of non-thermal pulsations from PSRs J1747-2958, J2021+3651, and J1826-1256
Jian Li, Diego F. Torres, Francesco Coti Zelati +3
Based on a theoretical selection of pulsars as candidates for detection at X-ray energies, we present an analysis of archival X-ray observations done with Chandra and XMM-Newton of…