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Professor Paula Chadwick's Outputs (3)

Fermi-LAT high-z active galactic nuclei and the extragalactic background light (2017)
Journal Article
Armstrong, T., Brown, A. M., & Chadwick, P. M. (2017). Fermi-LAT high-z active galactic nuclei and the extragalactic background light. Monthly Notices of the Royal Astronomical Society, 470(4), 4089-4098. https://doi.org/10.1093/mnras/stx1309

Observations of distant gamma-ray sources are hindered by the presence of the extragalactic background light (EBL). In order to understand the physical processes that result in the observed spectrum of sources, it is imperative that a good understand... Read More about Fermi-LAT high-z active galactic nuclei and the extragalactic background light.

A search for very high-energy flares from the microquasars GRS 1915+105, Circinus X-1, and V4641 Sgr using contemporaneous H.E.S.S. and RXTE observations (2017)
Journal Article
Abdalla, H., Abramowski, A., Aharonian, F., Benkhali, F. A., Akhperjanian, A., Angüner, E., …Żywucka, N. (2017). A search for very high-energy flares from the microquasars GRS 1915+105, Circinus X-1, and V4641 Sgr using contemporaneous H.E.S.S. and RXTE observations. Astronomy & Astrophysics, 612, Article A10. https://doi.org/10.1051/0004-6361/201527773

Context. Microquasars are potential γ-ray emitters. Indications of transient episodes of γ-ray emission were recently reported in at least two systems: Cyg X-1 and Cyg X-3. The identification of additional γ-ray-emitting microquasars is required to b... Read More about A search for very high-energy flares from the microquasars GRS 1915+105, Circinus X-1, and V4641 Sgr using contemporaneous H.E.S.S. and RXTE observations.