Sciences and Exploration Directorate

Vratislav Krupar

(RESEARCH SCIENTIST)

 vratislav.krupar@nasa.gov

 301.286.9115

Org Code: 672

NASA/GSFC
Mail Code: 672
Greenbelt, MD 20771

Employer: UNIVERSITY OF MARYLAND BALTIMORE CO

Positions/Employment


Postdoctoral Research Fellow

Czech Academy of Sciences - Prague, Czech Republic

September 2012 - June 2015


Research Associate

Imperial College London - London, United Kingdom

July 2015 - December 2016


NASA Postdoctoral Fellow

NASA Goddard Space Flight Center/Universities Space Research Association - Greenbelt, MD, USA

May 2017 - April 2020


Assistant Research Scientist

NASA Goddard Space Flight Center/University of Maryland, Baltimore County - Greenbelt, MD, USA

May 2017 - December 2022


Associate Research Scientist

NASA Goddard Space Flight Center/University of Maryland, Baltimore County - Greenbelt, MD, USA

January 2023 - Present

Education


Ph.D. (Astronomy and Astrophysics), Sep. 2012, Paris Observatory, Meudon, France

Ph.D. (Physics of Plasmas and Ionized Media), Sep. 2012, Charles University, Prague, Czech Republic

MSc. (Surface and Plasma Physics), May 2008, Charles University, Prague, Czech Republic

BSc. (Physics), Jun. 2007, Charles University, Prague, Czech Republic


Professional Societies


American Geophysical Union

2008 - Present

Publications


Refereed

Krupar, V., O. Kruparova, A. Szabo, et al. F. Nemec, M. Maksimovic, J. C. Martinez Oliveros, D. Lario, X. Bonnin, A. Vecchio, M. Pulupa, and S. D. Bale. 2024. Comparative Analysis of Type III Radio Bursts and Solar Flares: Spatial Localization and Correlation with Solar Flare Intensity The Astrophysical Journal 961 (1): 88 [10.3847/1538-4357/ad12ba]

Krupar, V., O. Kruparova, A. Szabo, et al. R. F. Pinto, M. Maksimovic, and J. C. Martinez Oliveros. 2024. Enhancing Triangulation of Interplanetary Type III Bursts through Wavevector Correction The Astrophysical Journal 960 (2): 101 [10.3847/1538-4357/ad150e]

Chen, X., E. P. Kontar, N. Chrysaphi, et al. P. Zhang, V. Krupar, S. Musset, M. Maksimovic, N. L. Jeffrey, F. Azzollini, and A. Vecchio. 2023. Source positions of an interplanetary type III radio burst and anisotropic radio-wave scattering Astronomy & Astrophysics 680 A1 [10.1051/0004-6361/202347185]

Kruparova, O., V. Krupar, A. Szabo, M. Pulupa, and S. D. Bale. 2023. Quasi-thermal Noise Spectroscopy Analysis of Parker Solar Probe Data: Improved Electron Density Model for Solar Wind The Astrophysical Journal 957 (1): 13 [10.3847/1538-4357/acf572]

Park, B., A. Pitňa, J. Šafránková, et al. Z. Němeček, O. Krupařová, V. Krupař, L. Zhao, and A. Silwal. 2023. Change of Spectral Properties of Magnetic Field Fluctuations across Different Types of Interplanetary Shocks The Astrophysical Journal Letters 954 (2): L51 [10.3847/2041-8213/acf4ff]

Jebaraj, I. C., A. Kouloumvakos, N. Dresing, et al. A. Warmuth, N. Wijsen, C. Palmroos, J. Gieseler, A. Marmyleva, R. Vainio, V. Krupar, T. Wiegelmann, J. Magdalenic, F. Schuller, A. F. Battaglia, and A. Fedeli. 2023. Multiple injections of energetic electrons associated with the flare and CME event on 9 October 2021 Astronomy & Astrophysics 675 A27 [10.1051/0004-6361/202245716]

Dresing, N., L. Rodríguez-García, I. C. Jebaraj, et al. A. Warmuth, S. Wallace, L. Balmaceda, T. Podladchikova, R. D. Strauss, A. Kouloumvakos, C. Palmroos, V. Krupar, J. Gieseler, Z. Xu, J. G. Mitchell, C. M. Cohen, G. A. de Nolfo, E. Palmerio, F. Carcaboso, E. K. Kilpua, D. Trotta, U. Auster, E. Asvestari, D. da Silva, W. Dröge, T. Getachew, R. Gómez-Herrero, M. Grande, D. Heyner, M. Holmström, J. Huovelin, Y. Kartavykh, M. Laurenza, C. O. Lee, G. Mason, M. Maksimovic, J. Mieth, G. Murakami, P. Oleynik, M. Pinto, M. Pulupa, I. Richter, J. Rodríguez-Pacheco, B. Sánchez-Cano, F. Schuller, H. Ueno, R. Vainio, A. Vecchio, A. M. Veronig, and N. Wijsen. 2023. The 17 April 2021 widespread solar energetic particle event Astronomy & Astrophysics 674 A105 [10.1051/0004-6361/202345938]

Bučík, R., G. M. Mason, N. V. Nitta, et al. V. Krupar, L. Rodriguez, G. C. Ho, S. T. Hart, M. A. Dayeh, J. Rodríguez-Pacheco, R. Gómez-Herrero, and R. F. Wimmer-Schweingruber. 2023. Recurrent <sup>3</sup>He-rich solar energetic particle injections observed by Solar Orbiter at ∼0.5 au Astronomy &amp; Astrophysics 673 L5 [10.1051/0004-6361/202345875]

Jebaraj, I. C., J. Magdalenic, V. Krasnoselskikh, V. Krupar, and S. Poedts. 2023. Structured type III radio bursts observed in interplanetary space Astronomy &amp; Astrophysics 670 A20 [10.1051/0004-6361/202243494]

Mason, G. M., N. V. Nitta, R. Bučík, et al. R. Gómez-Herrero, V. Krupar, S. Krucker, G. C. Ho, R. C. Allen, A. Kouloumvakos, R. F. Wimmer-Schweingruber, J. Rodriguez-Pacheco, A. Vecchio, and M. Maksimovic. 2023. The 18–19 March 2022 series of <sup>3</sup>He-rich events observed by Solar Orbiter at 0.36 au compared with EUV, X-ray, and radio observations Astronomy &amp; Astrophysics 669 L16 [10.1051/0004-6361/202245576]

Zhang, J., H. A. Reid, V. Krupar, et al. P. Zucca, B. Dabrowski, and A. Krankowski. 2023. Deriving Large Coronal Magnetic Loop Parameters Using LOFAR J Burst Observations Solar Physics 298 (1): 7 [10.1007/s11207-022-02096-0]

Bučík, R., G. M. Mason, R. Gómez-Herrero, et al. V. Krupar, D. Lario, M. J. Starkey, G. C. Ho, J. Rodríguez-Pacheco, R. F. Wimmer-Schweingruber, F. Espinosa Lara, T. Tadesse, L. Balmaceda, C. M. Cohen, M. A. Dayeh, M. I. Desai, P. Kühl, N. V. Nitta, M. E. Wiedenbeck, and Z. G. Xu. 2022. The first gradual solar energetic particle event with an enhanced <sup>3</sup>He abundance on Solar Orbiter Astronomy &amp; Astrophysics 669 A13 [10.1051/0004-6361/202245037]

Nieves-Chinchilla, T., N. Alzate, H. Cremades, et al. L. Rodríguez-García, L. F. G. Dos Santos, A. Narock, H. Xie, A. Szabo, E. Palmerio, V. Krupar, M. Pulupa, D. Lario, M. L. Stevens, L. B. Wilson, R.-Y. Kwon, M. L. Mays, O. C. St. Cyr, P. Hess, K. K. Reeves, D. B. Seaton, T. Niembro, S. D. Bale, and J. C. Kasper. 2022. Direct First Parker Solar Probe Observation of the Interaction of Two Successive Interplanetary Coronal Mass Ejections in 2020 November The Astrophysical Journal 930 (1): 88 [10.3847/1538-4357/ac590b]

Sasikumar Raja, K., M. Maksimovic, E. P. Kontar, et al. X. Bonnin, P. Zarka, L. Lamy, H. Reid, N. Vilmer, A. Lecacheux, V. Krupar, B. Cecconi, L. Nora, and L. Denis. 2022. Spectral Analysis of Solar Radio Type III Bursts from 20 kHz to 410 MHz The Astrophysical Journal 924 (2): 58 [10.3847/1538-4357/ac34ed]

Aran, A., D. Pacheco, M. Laurenza, et al. N. Wijsen, D. Lario, S. Benella, I. G. Richardson, E. Samara, J. L. Freiherr von Forstner, B. Sanahuja, L. Rodriguez, L. Balmaceda, F. Espinosa Lara, R. Gómez-Herrero, K. Steinvall, A. Vecchio, V. Krupar, S. Poedts, R. C. Allen, G. B. Andrews, V. Angelini, L. Berger, D. Berghmans, S. Boden, S. I. Böttcher, F. Carcaboso, I. Cernuda, R. De Marco, S. Eldrum, V. Evans, A. Fedorov, J. Hayes, G. C. Ho, T. S. Horbury, N. P. Janitzek, Y. V. Khotyaintsev, A. Kollhoff, P. Kühl, S. R. Kulkarni, W. J. Lees, P. Louarn, J. Magdalenic, M. Maksimovic, O. Malandraki, A. Martínez, G. M. Mason, C. Martín, H. O’Brien, C. Owen, P. Parra, M. Prieto Mateo, A. Ravanbakhsh, J. Rodriguez-Pacheco, O. Rodriguez Polo, S. Sánchez Prieto, C. E. Schlemm, H. Seifert, J. C. Terasa, K. Tyagi, C. Verbeeck, R. F. Wimmer-Schweingruber, Z. G. Xu, M. K. Yedla, and A. N. Zhukov. 2021. Evidence for local particle acceleration in the first recurrent galactic cosmic ray depression observed by Solar Orbiter Astronomy &amp; Astrophysics 656 L10 [10.1051/0004-6361/202140966]

Bučík, R., G. M. Mason, R. Gómez-Herrero, et al. D. Lario, L. Balmaceda, N. V. Nitta, V. Krupar, N. Dresing, G. C. Ho, R. C. Allen, F. Carcaboso, J. Rodríguez-Pacheco, F. Schuller, A. Warmuth, R. F. Wimmer-Schweingruber, J. L. Freiherr von Forstner, G. B. Andrews, L. Berger, I. Cernuda, F. Espinosa Lara, W. J. Lees, C. Martín, D. Pacheco, M. Prieto, S. Sánchez-Prieto, C. E. Schlemm, H. Seifert, K. Tyagi, M. Maksimovic, A. Vecchio, A. Kollhoff, P. Kühl, Z. Xu, and S. Eldrum. 2021. The long period of<sup>3</sup>He-rich solar energetic particles measured by Solar Orbiter 2020 November 17–23 Astronomy &amp; Astrophysics 656 L11 [10.1051/0004-6361/202141009]

Soucek, J., D. Pisa, I. Kolmasova, et al. L. Uhlir, R. Lan, O. Santolik, V. Krupar, O. Kruparova, J. Base, M. Maksimovic, S. D. Bale, T. Chust, Y. V. Khotyaintsev, V. Krasnoselskikh, M. Kretzschmar, E. Lorfevre, D. Plettemeier, M. Steller, and al.. 2021. Solar Orbiter Radio and Plasma Waves - Time Domain Sampler: In-flight performance and first results Astronomy & Astrophysics [10.1051/0004-6361/202140948]

Bezděková, B., F. Němec, M. Parrot, O. Kruparova, and V. Krupar. 2021. Using Principal Component Analysis to Characterize the Variability of VLF Wave Intensities Measured by a Low‐Altitude Spacecraft and Caused by Interplanetary Shocks Journal of Geophysical Research: Space Physics 126 (5): [10.1029/2021ja029158]

Gomez-Herrero, R., D. Pacheco, A. Kollhoff, et al. F. Espinosa Lara, J. L. Freiherr von Forstner, N. Dresing, D. Lario, L. Balmaceda, V. Krupar, O. E. Malandraki, A. Aran, R. Bucik, A. Klassen, K.-L. Klein, I. Cernuda, S. Eldrum, H. Reid, and al.. 2021. First near-relativistic solar electron events observed by EPD onboard Solar Orbiter Astronomy & Astrophysics [10.1051/0004-6361/202039883]

Maksimovic, M., S. D. Bale, T. Chust, et al. Y. Khotyaintsev, V. Krasnoselskikh, M. Kretzschmar, D. Plettemeier, H. O. Rucker, J. Souček, M. Steller, Š. Štverák, P. Trávníček, A. Vaivads, S. Chaintreuil, M. Dekkali, O. Alexandrova, P.-A. Astier, G. Barbary, D. Bérard, X. Bonnin, K. Boughedada, B. Cecconi, F. Chapron, M. Chariet, C. Collin, Y. de Conchy, D. Dias, L. Guéguen, L. Lamy, V. Leray, S. Lion, L. R. Malac-Allain, L. Matteini, Q. N. Nguyen, F. Pantellini, J. Parisot, P. Plasson, S. Thijs, A. Vecchio, I. Fratter, E. Bellouard, E. Lorfèvre, P. Danto, S. Julien, E. Guilhem, C. Fiachetti, J. Sanisidro, C. Laffaye, F. Gonzalez, B. Pontet, N. Quéruel, G. Jannet, P. Fergeau, J.-Y. Brochot, G. Cassam-Chenai, T. Dudok de Wit, M. Timofeeva, T. Vincent, C. Agrapart, G. T. Delory, P. Turin, A. Jeandet, P. Leroy, J.-C. Pellion, V. Bouzid, B. Katra, R. Piberne, W. Recart, O. Santolík, I. Kolmašová, V. Krupař, O. Krupařová, D. Píša, L. Uhlíř, R. Lán, J. Baše, L. Ahlèn, M. André, L. Bylander, V. Cripps, C. Cully, A. Eriksson, S.-E. Jansson, E. P. Johansson, T. Karlsson, W. Puccio, J. Břínek, H. Öttacher, M. Panchenko, M. Berthomier, K. Goetz, P. Hellinger, T. S. Horbury, K. Issautier, E. Kontar, S. Krucker, O. Le Contel, P. Louarn, M. Martinović, C. J. Owen, A. Retino, J. Rodríguez-Pacheco, F. Sahraoui, R. F. Wimmer-Schweingruber, A. Zaslavsky, and I. Zouganelis. 2020. The Solar Orbiter Radio and Plasma Waves (RPW) instrument Astronomy & Astrophysics 642 A12 [10.1051/0004-6361/201936214]

Martínez Oliveros, J. C., S. M. Castillo, V. Krupar, et al. M. Pulupa, S. D. Bale, and B. Calvo-Mozo. 2020. An In Situ Interplanetary “U-burst”: Observation and Results The Astrophysical Journal 897 (2): 170 [10.3847/1538-4357/ab96c3]

Jebaraj, I. C., J. Magdalenić, T. Podladchikova, et al. C. Scolini, J. Pomoell, A. M. Veronig, K. Dissauer, V. Krupar, E. K. Kilpua, and S. Poedts. 2020. Using radio triangulation to understand the origin of two subsequent type II radio bursts Astronomy & Astrophysics 639 A56 [10.1051/0004-6361/201937273]

Krupar, V., A. Szabo, M. Maksimovic, et al. O. Kruparova, E. P. Kontar, L. A. Balmaceda, X. Bonnin, S. D. Bale, M. Pulupa, D. M. Malaspina, J. W. Bonnell, P. R. Harvey, K. Goetz, T. Dudok de Wit, R. J. MacDowall, J. C. Kasper, A. W. Case, K. E. Korreck, D. E. Larson, R. Livi, M. L. Stevens, P. L. Whittlesey, and A. M. Hegedus. 2020. Density Fluctuations in the Solar Wind Based on Type III Radio Bursts Observed by Parker Solar Probe The Astrophysical Journal Supplement Series 246 (2): 57 [10.3847/1538-4365/ab65bd]

Lario, D., R. Y. Kwon, L. Balmaceda, et al. I. G. Richardson, V. Krupar, B. J. Thompson, O. C. Cyr, L. Zhao, and M. Zhang. 2020. Fast and Wide CMEs without Observed >20 MeV Protons The Astrophysical Journal 889 (2): 92 [10.3847/1538-4357/ab64e1]

Kontar, E. P., X. Chen, N. Chrysaphi, et al. N. L. Jeffrey, A. G. Emslie, V. Krupar, M. Maksimovic, M. Gordovskyy, and P. K. Browning. 2019. Anisotropic Radio-wave Scattering and the Interpretation of Solar Radio Emission Observations The Astrophysical Journal 884 (2): 122 [10.3847/1538-4357/ab40bb]

Krupar, V., J. Magdalenić, J. P. Eastwood, et al. N. Gopalswamy, O. Kruparova, A. Szabo, and F. Němec. 2019. Statistical Survey of Coronal Mass Ejections and Interplanetary Type II Bursts The Astrophysical Journal 882 (2): 92 [10.3847/1538-4357/ab3345]

Kruparova, O., V. Krupar, J. Šafránková, et al. Z. Němeček, M. Maksimovic, O. Santolik, J. Soucek, F. Němec, and J. Merka. 2019. Statistical Survey of the Terrestrial Bow Shock Observed by the Cluster Spacecraft Journal of Geophysical Research: Space Physics 124 (3): 1539-1547 [10.1029/2018ja026272]

Krupar, V., M. Maksimovic, E. P. Kontar, et al. A. Zaslavsky, O. Santolik, J. Soucek, O. Kruparova, J. P. Eastwood, and A. Szabo. 2018. Interplanetary Type III Bursts and Electron Density Fluctuations in the Solar Wind The Astrophysical Journal 857 (2): 82 [10.3847/1538-4357/aab60f]

Grison, B., J. Souček, V. Krupar, et al. D. Píša, O. Santolík, U. Taubenschuss, and F. Nĕmec. 2018. Shock deceleration in interplanetary coronal mass ejections (ICMEs) beyond Mercury’s orbit until one AU Journal of Space Weather and Space Climate 8 A54 [10.1051/swsc/2018043]

Möstl, C., A. Isavnin, P. D. Boakes, et al. E. K. Kilpua, J. A. Davies, R. A. Harrison, D. Barnes, V. Krupar, J. P. Eastwood, S. W. Good, R. J. Forsyth, V. Bothmer, M. A. Reiss, T. Amerstorfer, R. M. Winslow, B. J. Anderson, L. C. Philpott, L. Rodriguez, A. P. Rouillard, P. Gallagher, T. Nieves-Chinchilla, and T. L. Zhang. 2017. Modeling observations of solar coronal mass ejections with heliospheric imagers verified with the Heliophysics System Observatory Space Weather 15 (7): 955-970 [10.1002/2017sw001614]

Miteva, R., S. W. Samwel, and V. Krupar. 2017. Solar energetic particles and radio burst emission Journal of Space Weather and Space Climate 7 A37 [10.1051/swsc/2017035]

Mäkelä, P., N. Gopalswamy, M. J. Reiner, S. Akiyama, and V. Krupar. 2016. SOURCE REGIONS OF THE TYPE II RADIO BURST OBSERVED DURING A CME–CME INTERACTION ON 2013 MAY 22 The Astrophysical Journal 827 (2): 141 [10.3847/0004-637x/827/2/141]

Krupar, V., J. P. Eastwood, O. Kruparova, et al. O. Santolik, J. Soucek, J. Magdalenić, A. Vourlidas, M. Maksimovic, X. Bonnin, V. Bothmer, N. Mrotzek, A. Pluta, D. Barnes, J. A. Davies, J. C. Oliveros, and S. D. Bale. 2016. AN ANALYSIS OF INTERPLANETARY SOLAR RADIO EMISSIONS ASSOCIATED WITH A CORONAL MASS EJECTION The Astrophysical Journal 823 (1): L5 [10.3847/2041-8205/823/1/l5]

Krupar, V., E. P. Kontar, J. Soucek, et al. O. Santolik, M. Maksimovic, and O. Kruparova. 2015. On the speed and acceleration of electron beams triggering interplanetary type III radio bursts Astronomy & Astrophysics 580 A137 [10.1051/0004-6361/201425308]

Martínez-Oliveros, J. C., C. Raftery, H. Bain, et al. Y. Liu, M. Pulupa, P. Saint-Hilaire, P. Higgins, V. Krupar, S. Krucker, and S. D. Bale. 2014. STEREO-Wind Radio Positioning of an Unusually Slow Drifting Event Solar Physics 290 (3): 891-901 [10.1007/s11207-014-0638-z]

Krupar, V., M. Maksimovic, O. Santolik, B. Cecconi, and O. Kruparova. 2014. Statistical Survey of Type III Radio Bursts at Long Wavelengths Observed by the Solar TErrestrial RElations Observatory (STEREO)/Waves Instruments: Goniopolarimetric Properties and Radio Source Locations Solar Physics 289 (12): 4633-4652 [10.1007/s11207-014-0601-z]

Magdalenić, J., C. Marqué, V. Krupar, et al. M. Mierla, A. N. Zhukov, L. Rodriguez, M. Maksimović, and B. Cecconi. 2014. TRACKING THE CME-DRIVEN SHOCK WAVE ON 2012 MARCH 5 AND RADIO TRIANGULATION OF ASSOCIATED RADIO EMISSION The Astrophysical Journal 791 (2): 115 [10.1088/0004-637x/791/2/115]

Krupar, V., M. Maksimovic, O. Santolik, et al. E. P. Kontar, B. Cecconi, S. Hoang, O. Kruparova, J. Soucek, H. Reid, and A. Zaslavsky. 2014. Statistical Survey of Type III Radio Bursts at Long Wavelengths Observed by the Solar TErrestrial RElations Observatory (STEREO)/Waves Instruments: Radio Flux Density Variations with Frequency Solar Physics 289 (8): 3121-3135 [10.1007/s11207-014-0522-x]

Kruparova, O., M. Maksimovic, J. Šafránková, et al. Z. Němeček, O. Santolik, and V. Krupar. 2013. Automated interplanetary shock detection and its application to Wind observations Journal of Geophysical Research: Space Physics 118 (8): 4793-4803 [10.1002/jgra.50468]

Krupar, V., O. Santolik, B. Cecconi, et al. M. Maksimovic, X. Bonnin, M. Panchenko, and A. Zaslavsky. 2012. Goniopolarimetric inversion using SVD: An application to type III radio bursts observed by STEREO Journal of Geophysical Research: Space Physics 117 (A6): [10.1029/2011ja017333]

Martínez Oliveros, J. C., C. L. Raftery, H. M. Bain, et al. Y. Liu, V. Krupar, S. Bale, and S. Krucker. 2012. THE 2010 AUGUST 1 TYPE II BURST: A CME-CME INTERACTION AND ITS RADIO AND WHITE-LIGHT MANIFESTATIONS The Astrophysical Journal 748 (1): 66 [10.1088/0004-637x/748/1/66]