Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Barbara Matyjasiak"'
Autor:
Marcin Grzesiak, Mariusz Pożoga, Barbara Matyjasiak, Dorota Przepiórka, Katarzyna Beser, Lukasz Tomasik, Hanna Rothkaehl, Helena Ciechowska
Publikováno v:
Remote Sensing, Vol 14, Iss 18, p 4655 (2022)
We try to assess the validity of assumptions taken when deriving drift velocity. We give simple formulas for characteristics of the spatiotemporal correlation function of the observed diffraction pattern for the frozen flow and the more general Brigg
Externí odkaz:
https://doaj.org/article/052e3f259cbf44cb90ad73bba5e39c46
Autor:
Christian Vocks, Pietro Zucca, Mario Bisi, Bartosz Dabrowski, Diana Morosan, Peter Gallagher, Andrzej Krankowski, Jasmina Magdalenic, Gottfried Mann, Christophe Marque, Hanna Rothkaehl, Barbara Matyjasiak
LOFAR low band interferometric images of type III solar radio bursts during an M class flare on 7 September 2017 show distinct sources with variations in their positions and intermittent dual source structures. We identify these as fundamental and ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad5815ec1ef0dfd3aab476bcc0c5181e
https://doi.org/10.5194/egusphere-egu23-12283
https://doi.org/10.5194/egusphere-egu23-12283
The Earth's ionosphere is a coupled system affected by interactions with precipitating energetic particles and electrical currents from the Earth's magnetosphere, and in addition by upward propagating disturbances from lower atmospheric layers. Geoma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0f4045f32c944138554f9ac75453c4f
https://doi.org/10.5194/egusphere-egu22-12910
https://doi.org/10.5194/egusphere-egu22-12910
Autor:
Roman Wronowski, Lukasz Tomasik, Katarzyna Budzińska, Helena Ciechowska, Mariusz Pozoga, Marcin Grzesiak, Hanna Rothkaehl, Barbara Matyjasiak
Publikováno v:
2021 Signal Processing Symposium (SPSympo).
The aim of the study is to obtain quantitative information on the conditions of ionospheric plasma and its variability at mid-latitudes. For this purpose, we use the S4 scintillation index parameter, which is widely used in other diagnostic technique
Publikováno v:
2021 Signal Processing Symposium (SPSympo).
We take the frozen-in assumption of the scatter evolution and derive simple formulas for characteristics of the spatiotemporal correlation function of the observed diffraction pattern. Using Low-Frequency Array (LOFAR) Cassiopeia intensity observatio
Autor:
Mario M. Bisi, Barbara Matyjasiak, Hanna Rothkaehl, Mark Ruiter, Stuart C. Robertson, Maaijke Mevius, Carla Baldovin, Renne Vermeulen, Peter T. Gallagher, David G. Barnes, Tobia Carozzi, Joris Verbiest, Richard Fallows, Eoin P. Carley, Nicole Vilmer
Space Weather (SW) research is a very important topic from the scientific, operational and civic society point of view. Knowledge of interactions in the Sun-Earth system, the physics behind observed SW phenomena, and its direct impact on modern techn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fe7d94cd3d74760cf737a5c899aa080
https://doi.org/10.5194/egusphere-egu21-6455
https://doi.org/10.5194/egusphere-egu21-6455
Autor:
Barbara Atamaniuk, Hanna Rothkaehl, Mariusz Pozoga, Katarzyna Budzińska, Marcin Grzesiak, Dorota Przepiórka, Barbara Matyjasiak
Scintillation of beacon satellite signals or distant cosmic radio emissions can provide interesting information on the cosmic medium itself, its internal spatial structure and basic evolution characteristics. LOFAR network gives consistent scintillat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13fcdad38bd98a64295f3595ccf59783
https://doi.org/10.5194/egusphere-egu21-6582
https://doi.org/10.5194/egusphere-egu21-6582
Autor:
Barbara Matyjasiak, Maaijke Mevius, Katarzyna Budzińska, Marcin Grzesiak, Hanna Rothkaehl, Mariusz Pozoga
Perturbation of an electromagnetic signal due to its passing through the Earth’s ionosphere is one of the limiting factors in obtaining high quality astronomical observations at low frequencies. Since the establishment of the Low Frequency Array (L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70cec5292ae1e6958a0e9641ace8ca03
https://doi.org/10.5194/egusphere-egu21-8530
https://doi.org/10.5194/egusphere-egu21-8530
Autor:
Katarzyna Budzińska, Helena Ciechowska, Marcin Grzesiak, Łukasz Tomasik, Hanna Rothkaehl, Roman Wronowski, Barbara Matyjasiak, Mariusz Pozoga
Due to their low intensity, ionospheric scintillations in the middle latitude region are difficult to observe. However, scintillations intensity increases at lower frequencies. Those below 90 MHz, covered by LOFAR, enable scintillation measurements i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b0bccf9ebd5efd6cab5d31b92c818a0
https://doi.org/10.5194/egusphere-egu21-14374
https://doi.org/10.5194/egusphere-egu21-14374
Formation the feature, in a form of deep trough, in frequency dependence of the wave field strength for single-hop paths with distances near classical limiting distance 3000 km at low level of solar activity was considered. Model calculations within
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37cde1a2a96f6369f061ba2f335eed1a
https://doi.org/10.5194/egusphere-egu2020-18481
https://doi.org/10.5194/egusphere-egu2020-18481