Essays about: "x-ray mirror"

Showing result 1 - 5 of 9 essays containing the words x-ray mirror.

1. 1. The effect of model calibration on noisy label detection

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Max Joel Söderberg; [2023]
   Keywords : Area Under the Margin; Calibration; Image classification; Label smoothing; Noisy labels; Overconfidence; Area under marginalen; Kalibrering; Bildklassificering; Etikettutjämning; Brusiga etiketter; Övertro;

   Abstract : The advances in deep neural networks in recent years have opened up the possibility of using image classification as a valuable tool in various areas, such as medical diagnosis from x-ray images. However, training deep neural networks requires large amounts of annotated data which has to be labelled manually, by a person. READ MORE

3. 2. Determining the alignment of Solar Orbiter instruments STIX and EUI during solar flares

   University essay from Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

   Author : Sofia Tynelius; [2022]
   Keywords : Solar flares; the Sun; STIX; EUI; alignment; pointing;

   Abstract : Solar Orbiter is a mission launched in 2020 that will take images closer than ever of the Sun. It has ten instruments on board, including The Spectrometer/Telescope for Imaging X-rays (STIX) and The Extreme Ultraviolet Imager (EUI). READ MORE

4. 3. Simulating and Testing the Polarimetric Response of the X-ray Polarimetry Telescope XL-Calibur

   University essay from KTH/Fysik

   Author : Filip af Malmborg; [2022]
   Keywords : Astroparticle Physics; Astrophysics; Detector Physics; Simulation; Theoretical Physics; Engineering Physics; Astropartikelfysik; Astropartikelfysik; Detektorfysik; Simulering; Teoretisk Fysik; Teknisk Fysik;

   Abstract : X-ray polarimetry, the study of the polarisation of X-ray light, is a powerful and rapidly developing tool for astrophysics, which promises to help answer outstanding questions about the physics of extreme objects such as pulsars, X-ray binaries and active galactic nuclei. The balloon-borne telescope XL-Calibur will be the first instrument to study the polarisation of hard X-rays (with energies between 10 and 100 keV) in detail, correlating with the soft X-ray observations of IXPE to provide further tests of polarisation-dependent x-ray emission models in extreme objects. READ MORE

5. 4. Synchrotrons as a Source for Soft X-Ray Lithography

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Thomas Joseph Grandsaert Jr; [2021]
   Keywords : Physics and Astronomy;

   Abstract : To move to lower modes in extreme ultra-violet lithography (EUVL) technology (and keep up with Moore’s law), new sources of soft X-ray radiation must be developed. It is clear from previous studies that Free Electron Lasers (FELs) can easily meet the in-band power requirements at these lower wavelength modes, however detailed studies for insertion devices (undulators) as a soft X-ray lithography (SXL) source are due for a re-evaluation. READ MORE

6. 5. ATHENA Space Telescope: Line of Sight Control with a Hexapod in the Loop

   University essay from KTH/Optimeringslära och systemteori

   Author : Simon Görries; [2017]
   Keywords : ;

   Abstract : The Advanced Telescope for High-Energy Astrophysics, Athena, is an x-ray telescope with a 2000 kg mirror module mounted on a six degree of freedom hexapod mechanism. It is currently assessed in a phase A feasibility study as L-class mission in the European Space Agency’s Cosmic Vision 2015-2025 plan with a launch foreseen in 2028. READ MORE