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Mitigating the effects of particle background on the Athena Wide Field Imager
Miller, Eric D.; Kraft, Ralph; Gastaldello, Fabio +16 more
The Wide Field Imager (WFI) flying on Athena will usher in the next era of studying the hot and energetic Universe. Among Athena's ambitious science programs are observations of faint, diffuse sources limited by statistical and systematic uncertainty in the background produced by high-energy cosmic ray particles. These particles produce easily ide…
Emu: a case study for TDI-like imaging for infrared observation from space
Nordlander, Thomas; Casagrande, Luca; Ireland, Michael +14 more
A wide-field zenith-looking telescope operating in a mode similar to time-delay-integration (TDI) or drift scan imaging can perform an infrared sky survey without active pointing control, but it requires a high-speed, low-noise infrared detector. Operating from a hosted payload platform on the International Space Station (ISS), the Emu space teles…
Understanding the evolution of radiation damage on the Gaia CCDs after 72 months at L2
Seabroke, George; Ahmed, Saad; Holland, Andrew +5 more
The European Space Agency's Gaia spacecraft has been operating in L2 ever since its launch in December 2013 with a payload that includes 106 scientific charge-coupled devices (CCDs). Due to the predicted radiation environment at the pre-flight testing stage in addition to the high level of accuracy demanded by the science objectives, the non-ioniz…