Search Publications
A statistical study of solar radio Type III bursts and space weather implication
Ndacyayisenga, Theogene; Uwamahoro, Jean; Monstein, Christian +1 more
Solar radio bursts (SRBs) are the signatures of various phenomenon that happen in the solar corona and interplanetary medium (IPM). In this article, we have studied occurrence of Type III bursts and their association with the Sunspot number. This study confirms that occurrence of Type III bursts correlate well with Sunspot number. Further, using t…
In-flight testing of the injection of the LISA Pathfinder test mass into a geodesic
Mendes, L.; Russano, G.; Nofrarias, M. +77 more
LISA Pathfinder is a technology demonstrator space mission, aimed at testing key technologies for detecting gravitational waves in space. The mission is the precursor of LISA, the first space gravitational waves observatory, whose launch is scheduled for 2034. The LISA Pathfinder scientific payload includes two gravitational reference sensors (GRS…
Modeling irregular small bodies gravity field via extreme learning machines and Bayesian optimization
Reddy, Vishnu; Le Corre, Lucille; Furfaro, Roberto +4 more
Close proximity operations around small bodies are extremely challenging due to their uncertain dynamical environment. Autonomous guidance and navigation around small bodies require fast and accurate modeling of the gravitational field for potential on-board computation. In this paper, we investigate a model-based, data-driven approach to compute …
Investigation of the in-flight anomalies of the LISA Pathfinder Test Mass release mechanism
Bortoluzzi, D.; Mendes, J.; Vignotto, D. +1 more
The LISA Pathfinder mission was flown to test some key technologies for the in-flight detection of gravitational waves. The mechanism developed to initialise the science phase, releasing the test mass into a geodesic trajectory, produced unexpected test mass states, requiring dedicated in-flight and on-ground test campaigns. Due to the limited inf…
Responses of the Indian Equatorial Ionization Anomaly to two CME-induced geomagnetic storms during the peak phase of solar cycle 24
Akala, A. O.; Oyedokun, O. J.; Simi, K. G. +4 more
This work analyzes the geo-effectiveness of Coronal Mass Ejection- (CME-) induced storms by investigating the responses of ionospheric Vertical Total Electron Content (VTEC) and the Equatorial Ionization Anomaly (EIA) over the Indian sector to two storms. One of the storms occurred on February 19, 2014 (SYM-H: -120 nT), while the other occurred on…
Google dataset search and DOI for data in the ESA space science archives
De Marchi, Guido; Masson, Arnaud; Merin, Bruno +3 more
Reproducibility is at the core of science. For this reason, a common practice for authors is to provide links to the data used in their manuscripts upon submission to peer-reviewed journals. In space science, reference to archives' websites of major data providers like space agencies are still accepted by most journals. However, even these website…
Trends and characteristics of high-frequency type II bursts detected by CALLISTO spectrometers
Kumari, A.; Monstein, C.; Sasikumar Raja, K. +2 more
Solar radio type II bursts serve as early indicators of incoming geo-effective space weather events such as coronal mass ejections (CMEs). In order to investigate the origin of high-frequency type II bursts (HF type II bursts), we have identified 51 of them (among 180 type II bursts from SWPC reports) that are observed by ground-based Compound Ast…
Quasi-periodic ripples in the heliosphere from 1 to 40 AU
Birch, M. J.; Hargreaves, J. K.
This study extends the investigation of the ripples in the solar wind and the interplanetary magnetic field at L1 reported by Birch and Hargreaves (2020) to cover heliospheric distances from 1 to 40 AU, using data from the Voyager 2, Ulysses, Juno, Cassini, Themis and Apollo-12 spacecraft. The ripples were extracted from the source data using a ba…
Methods to determine thermal sensitivity of T-SAGE instrument for MICROSCOPE mission
Métris, Gilles; Rodrigues, Manuel; Touboul, Pierre +1 more
MICROSCOPE is a space mission launched in 2016 that aims to test the validity of the Equivalence Principle (EP), the main postulate of General Relativity (GR), with a precision never reached before (Touboul et al., 2001). EP states that two bodies of different compositions and masses fall with the same acceleration in the same gravitational field.…
Future Venus missions and flybys: A collection of possible measurements with mass spectrometers and plasma instruments
Wurz, P.; Galli, A.; Vorburger, A. +1 more
This study contains predictions for mass spectrometry and plasma instrument measurements during upcoming Venus flybys of BepiColombo and Solar Orbiter and discusses the possibility of a phosphine detection with mass spectrometry in Venus' upper atmosphere. The results extend the ones published previously in Gruchola et al. (2019), where prediction…