Institution
European Space Operations Centre
Government•Darmstadt, Germany•
About: European Space Operations Centre is a government organization based out in Darmstadt, Germany. It is known for research contribution in the topics: Orbit determination & Satellite. The organization has 309 authors who have published 331 publications receiving 10399 citations. The organization is also known as: ESOC.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the libration amplitude of Mercury can be determined by comparing pairs of images of the same landmarks taken by an orbiter at different positions of the planet at different angles.
22 citations
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University College Dublin1, European Space Operations Centre2, Centre national de la recherche scientifique3, Max Planck Society4, University of Tübingen5, Tata Institute of Fundamental Research6, University of California, San Diego7, University College London8, University of Toulouse9, Hoffmann-La Roche10
TL;DR: In this paper, the relative timing accuracy of XMM-Newton data from the Crab pulsar (PSR B0531+21) with radio measurements was compared with other high energy observatories such as Chandra, INTEGRAL and RXTE.
Abstract: Reliable timing calibration is essential for the accurate comparison of XMM-Newton light curves with those from other observatories, to ultimately use them to derive precise physical quantities. The XMM-Newton timing calibration is based on pulsar analysis. However, as pulsars show both timing noise and glitches, it is essential to monitor these calibration sources regularly. To this end, the XMM-Newton observatory performs observations twice a year of the Crab pulsar to monitor the absolute timing accuracy of the EPIC-pn camera in the fast Timing and Burst modes. We present the results of this monitoring campaign, comparing XMM-Newton data from the Crab pulsar (PSR B0531+21) with radio measurements. In addition, we use five pulsars (PSR J0537-69, PSR B0540-69, PSR B0833-45, PSR B1509-58 and PSR B1055-52) with periods ranging from 16 ms to 197 ms to verify the relative timing accuracy. We analysed 38 XMM-Newton observations (0.2-12.0 keV) of the Crab taken over the first ten years of the mission and 13 observations from the five complementary pulsars. All the data were processed with the SAS, the XMM-Newton Scientific Analysis Software, version 9.0. Epoch folding techniques coupled with \chi^{2} tests were used to derive relative timing accuracies. The absolute timing accuracy was determined using the Crab data and comparing the time shift between the main X-ray and radio peaks in the phase folded light curves. The relative timing accuracy of XMM-Newton is found to be better than 10^{-8}. The strongest X-ray pulse peak precedes the corresponding radio peak by 306\pm9 \mus, which is in agreement with other high energy observatories such as Chandra, INTEGRAL and RXTE. The derived absolute timing accuracy from our analysis is \pm48 \mus.
22 citations
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TL;DR: In this article, the downward solar (0.3-4 μm) and longwave (4-100 μm), and the direct retrieval of the solar net flux at the surface from satellite observations are discussed.
21 citations
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TL;DR: The Cassini mission is a joint ESA NASA mission for the exploration of the Saturnian System as discussed by the authors, which consists of two components: an Orbiter designed to tour Saturn for 4 years and an atmospheric Probe to Titan, Saturn's largest moon.
21 citations
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European Space Agency1, Leibniz University of Hanover2, Paris Diderot University3, University of Trento4, fondazione bruno kessler5, University of Urbino6, University of Birmingham7, ETH Zurich8, UK Astronomy Technology Centre9, Institut de Ciències de l'Espai10, European Space Operations Centre11, Imperial College London12, University of Florida13, University of Zurich14, University of Glasgow15, Polytechnic University of Catalonia16, Airbus Defence and Space17
TL;DR: In this paper, the authors report on the magnetic measurements throughout LISA Pathfinder (LPF) operations and characterize the magnetic environment within the spacecraft, study the time evolution of the magnetic field and its stability down to 20μHz.
Abstract: LISA Pathfinder (LPF) has been a space-based mission designed to test new technologies that will be required for a gravitational wave observatory in space. Magnetically driven forces play a key role in the instrument sensitivity in the low-frequency regime (mHz and below), the measurement band of interest for a space-based observatory. The magnetic field can couple to the magnetic susceptibility and remanent magnetic moment from the test masses and disturb them from their geodesic movement. LPF carried on-board a dedicated magnetic measurement subsystem with noise levels of 10 |$\rm nT \ Hz^{-1/2}$| from 1 Hz down to 1 mHz. In this paper we report on the magnetic measurements throughout LPF operations. We characterize the magnetic environment within the spacecraft, study the time evolution of the magnetic field and its stability down to 20 μHz, where we measure values around 200 |$\rm nT \ Hz^{-1/2}$|, and identify two different frequency regimes, one related to the interplanetary magnetic field and the other to the magnetic field originating inside the spacecraft. Finally, we characterize the non-stationary component of the fluctuations of the magnetic field below the mHz and relate them to the dynamics of the solar wind.
21 citations
Authors
Showing all 312 results
Name | H-index | Papers | Citations |
---|---|---|---|
S. Foley | 56 | 96 | 10888 |
Anja Rudolph | 53 | 137 | 17307 |
José F. F. Mendes | 51 | 257 | 19604 |
Johannes Schmetz | 29 | 85 | 3741 |
Markus Landgraf | 28 | 86 | 2678 |
Heiner Klinkrad | 23 | 120 | 1777 |
Ian Harrison | 22 | 71 | 1664 |
Holger Krag | 19 | 107 | 1081 |
Marcus Kirsch | 16 | 43 | 715 |
R. Maarschalkerweerd | 14 | 41 | 1163 |
Nicola Policella | 14 | 64 | 865 |
Michiel Otten | 13 | 27 | 539 |
Jozef C. Van Der Ha | 12 | 46 | 368 |
R. Jehn | 12 | 37 | 387 |
Andrés Riaguas | 10 | 14 | 376 |