Search

Your search keyword '"Espinosa-Lara, F."' showing total 88 results
Start Over Author "Espinosa-Lara, F."
88 results on '"Espinosa-Lara, F."'

2. Pulsations in the late-type Be star HD 50209 detected by CoRoT

Author

Diago, P. D., Gutierrez-Soto, J., Auvergne, M., Fabregat, J., Hubert, A. -M., Floquet, M., Fremat, Y., Garrido, R., Andrade, L., de Batz, B., Emilio, M., Espinosa-Lara, F., Huat, A. -L., Janot-Pacheco, E., Leroy, B., Martayan, C., Neiner, C., Semaan, T., Suso, J., Catala, C., Poretti, E., Rainer, M., Uytterhoeven, K., Michel, E., and Samadi, R.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

The presence of pulsations in late-type Be stars is still a matter of controversy. It constitutes an important issue to establish the relationship between non-radial pulsations and the mass-loss mechanism in Be stars. To contribute to this discussion, we analyse the photometric time series of the B8IVe star HD 50209 observed by the CoRoT mission in the seismology field. We use standard Fourier techniques and linear and non-linear least squares fitting methods to analyse the CoRoT light curve. In addition, we applied detailed modelling of high-resolution spectra to obtain the fundamental physical parameters of the star. We have found four frequencies which correspond to gravity modes with azimuthal order m=0,-1,-2,-3 with the same pulsational frequency in the co-rotating frame. We also found a rotational period with a frequency of 0.679 \cd (7.754 $\mu$Hz). HD 50209 is a pulsating Be star as expected from its position in the HR diagram, close to the SPB instability strip., Comment: 7 pages, 8 figures, accepted fot publication in the A&A CoRoT special feature

Published
2009
Full Text
View/download PDF

4. Solar activity relations in energetic electron events measured by the MESSENGER mission

Author

Rodríguez-García, L., primary, Balmaceda, L.A., additional, Gómez-Herrero, R., additional, Kouloumvakos, A., additional, Dresing, N., additional, Lario, D., additional, Zouganelis, I., additional, Fedeli, A., additional, Espinosa Lara, F., additional, Cernuda, I., additional, Ho, G. C., additional, Wimmer-Schweingruber, R. F., additional, and Rodríguez-Pacheco, J., additional

Published
2023
Full Text
View/download PDF

5. Solar energetic electron events measured by MESSENGER and Solar Orbiter

Author

Rodríguez-García, L., primary, Gómez-Herrero, R., additional, Dresing, N., additional, Lario, D., additional, Zouganelis, I., additional, Balmaceda, L. A., additional, Kouloumvakos, A., additional, Fedeli, A., additional, Espinosa Lara, F., additional, Cernuda, I., additional, Ho, G. C., additional, Wimmer-Schweingruber, R. F., additional, and Rodríguez-Pacheco, J., additional

Published
2023
Full Text
View/download PDF

6. The first gradual solar energetic particle event with an enhanced 3He abundance on Solar Orbiter

Author

Bučík, R., primary, Mason, G. M., additional, Gómez-Herrero, R., additional, Krupar, V., additional, Lario, D., additional, Starkey, M. J., additional, Ho, G. C., additional, Rodríguez-Pacheco, J., additional, Wimmer-Schweingruber, R. F., additional, Espinosa Lara, F., additional, Tadesse, T., additional, Balmaceda, L., additional, Cohen, C. M. S., additional, Dayeh, M. A., additional, Desai, M. I., additional, Kühl, P., additional, Nitta, N. V., additional, Wiedenbeck, M. E., additional, and Xu, Z. G., additional

Published
2022
Full Text
View/download PDF

7. The first gradual solar energetic particle event with an enhanced ³He abundance on Solar Orbiter

Author

Bucik, R., Mason, G. M., Gómez-Herrero, R., Krupar, V., Lario, D., Starkey, M. J., Ho, G. C., Rodríguez-Pacheco, J., Wimmer-Schweingruber, R. F., Espinosa Lara, F., Tadesse, T., Balmaceda, L., Cohen, C. M. S., Dayeh, M. A., Desai, M. I., Kühl, P., Nitta, N. V., Wiedenbeck, M. E., and Xu, Z. G.

Abstract

The origin of ³He bundance enhancements in gradual solar energetic particle (SEP) events remains largely unexplained. Two mechanisms have been suggested: the reacceleration of remnant flare material by coronal mass ejection (CME)-driven shocks in interplanetary space, and concomitant activity in the corona. We explore the first gradual SEP event with enhanced 3He abundance that was observed by Solar Orbiter. The event started on 2020 November 24 and was associated with a relatively fast halo CME. During the event, the spacecraft was at 0.9 au from the Sun. The event-averaged ³He/⁴He abundance ratio is 24 times higher than the coronal or solar wind value, and the timing of the ³He intensity was similar to that of other species. We inspected available imaging, radio observations, and the spacecraft magnetic connection to the CME source. The most probable cause of the enhanced ³He ions remaining from a preceding long period of 3He-rich SEPs on 2020 November 17–23.

Published
2023

8. 3He-rich solar energetic particle events observed on the first perihelion pass of Solar Orbiter

Author

Mason, G. M., primary, Ho, G. C., additional, Allen, R. C., additional, Rodríguez-Pacheco, J., additional, Wimmer-Schweingruber, R. F., additional, Bučík, R., additional, Gómez-Herrero, R., additional, Lario, D., additional, von Forstner, J. L. F., additional, Andrews, G. B., additional, Berger, L., additional, Cernuda, I., additional, Espinosa Lara, F., additional, Lees, W. J., additional, Martin, C., additional, Pacheco, D., additional, Prieto, M., additional, Sánchez-Prieto, S., additional, Hayes, J. R., additional, Schlemm, C. E., additional, Seifert, H., additional, and Tyagi, K., additional

Published
2021
Full Text
View/download PDF

9. First year of energetic particle measurements in the inner heliosphere with Solar Orbiter’s Energetic Particle Detector

Author

Wimmer-Schweingruber, R. F., primary, Janitzek, N. P., additional, Pacheco, D., additional, Cernuda, I., additional, Espinosa Lara, F., additional, Gómez-Herrero, R., additional, Mason, G. M., additional, Allen, R. C., additional, Xu, Z. G., additional, Carcaboso, F., additional, Kollhoff, A., additional, Kühl, P., additional, Freiherr von Forstner, J. L., additional, Berger, L., additional, Rodriguez-Pacheco, J., additional, Ho, G. C., additional, Andrews, G. B., additional, Angelini, V., additional, Aran, A., additional, Boden, S., additional, Böttcher, S. I., additional, Carrasco, A., additional, Dresing, N., additional, Eldrum, S., additional, Elftmann, R., additional, Evans, V., additional, Gevin, O., additional, Hayes, J., additional, Heber, B., additional, Horbury, T. S., additional, Kulkarni, S. R., additional, Lario, D., additional, Lees, W. J., additional, Limousin, O., additional, Malandraki, O. E., additional, Martín, C., additional, O’Brien, H., additional, Prieto Mateo, M., additional, Ravanbakhsh, A., additional, Rodriguez-Polo, O., additional, Sánchez Prieto, S., additional, Schlemm, C. E., additional, Seifert, H., additional, Terasa, J. C., additional, Tyagi, K., additional, Vainio, R., additional, Walsh, A., additional, and Yedla, M. K., additional

Published
2021
Full Text
View/download PDF

10. Quiet-time low energy ion spectra observed on Solar Orbiter during solar minimum

Author

Mason, G. M., primary, Ho, G. C., additional, Allen, R. C., additional, Xu, Z. G., additional, Janitzek, N. P., additional, Freiherr von Forstner, J. L., additional, Kohllhoff, A., additional, Pacheco, D., additional, Rodríguez-Pacheco, J., additional, Wimmer-Schweingruber, R. F., additional, Bruce Andrews, G., additional, Schlemm, C. E., additional, Seifert, H., additional, Tyagi, K., additional, Lees, W. J., additional, Hayes, J., additional, Gómez-Herrero, R., additional, Prieto, M., additional, Sánchez-Prieto, S., additional, Espinosa Lara, F., additional, Cernuda, I., additional, Parra Espada, P., additional, Rodríguez Polo, O., additional, Martínez Hellín, A., additional, Martin, C., additional, Böttcher, S., additional, Berger, L., additional, Terasa, J. C., additional, Boden, S., additional, Kulkarni, S. R., additional, Ravanbakhsh, A., additional, Yedla, M., additional, Eldrum, S., additional, Elftmann, R., additional, and Kühl, P., additional

Published
2021
Full Text
View/download PDF

11. Solar energetic particle heavy ion properties in the widespread event of 2020 November 29

Author

Mason, G. M., primary, Cohen, C. M. S., additional, Ho, G. C., additional, Mitchell, D. G., additional, Allen, R. C., additional, Hill, M. E., additional, Andrews, G. B., additional, Berger, L., additional, Boden, S., additional, Böttcher, S., additional, Cernuda, I., additional, Christian, E. R., additional, Cummings, A. C., additional, Davis, A. J., additional, Desai, M. I., additional, de Nolfo, G. A., additional, Eldrum, S., additional, Elftmann, R., additional, Kollhoff, A., additional, Giacalone, J., additional, Gómez-Herrero, R., additional, Hayes, J., additional, Janitzek, N. P., additional, Joyce, C. J., additional, Korth, A., additional, Kühl, P., additional, Kulkarni, S. R., additional, Labrador, A. W., additional, Espinosa Lara, F., additional, Lees, W. J., additional, Leske, R. A., additional, Mall, U., additional, Martin, C., additional, Martínez Hellín, A., additional, Matthaeus, W. H., additional, McComas, D. J., additional, McNutt, R. L., additional, Mewaldt, R. A., additional, Mitchell, J. G., additional, Pacheco, D., additional, Parra Espada, P., additional, Prieto, M., additional, Rankin, J. S., additional, Ravanbakhsh, A., additional, Rodríguez-Pacheco, J., additional, Rodríguez Polo, O., additional, Roelof, E. C., additional, Sánchez-Prieto, S., additional, Schlemm, C. E., additional, Schwadron, N. A., additional, Seifert, H., additional, Stone, E. C., additional, Szalay, J. R., additional, Terasa, J. C., additional, Tyagi, K., additional, Freiherr von Forstner, J. L., additional, Wiedenbeck, M. E., additional, Wimmer-Schweingruber, R. F., additional, Xu, Z. G., additional, and Yedla, M., additional

Published
2021
Full Text
View/download PDF

12. First near-relativistic solar electron events observed by EPD onboard Solar Orbiter

Author

Gómez-Herrero, R., primary, Pacheco, D., additional, Kollhoff, A., additional, Espinosa Lara, F., additional, Freiherr von Forstner, J. L., additional, Dresing, N., additional, Lario, D., additional, Balmaceda, L., additional, Krupar, V., additional, Malandraki, O. E., additional, Aran, A., additional, Bučík, R., additional, Klassen, A., additional, Klein, K.-L., additional, Cernuda, I., additional, Eldrum, S., additional, Reid, H., additional, Mitchell, J. G., additional, Mason, G. M., additional, Ho, G. C., additional, Rodríguez-Pacheco, J., additional, Wimmer-Schweingruber, R. F., additional, Heber, B., additional, Berger, L., additional, Allen, R. C., additional, Janitzek, N. P., additional, Laurenza, M., additional, De Marco, R., additional, Wijsen, N., additional, Kartavykh, Y. Y., additional, Dröge, W., additional, Horbury, T. S., additional, Maksimovic, M., additional, Owen, C. J., additional, Vecchio, A., additional, Bonnin, X., additional, Kruparova, O., additional, Píša, D., additional, Souček, J., additional, Louarn, P., additional, Fedorov, A., additional, O’Brien, H., additional, Evans, V., additional, Angelini, V., additional, Zucca, P., additional, Prieto, M., additional, Sánchez-Prieto, S., additional, Carrasco, A., additional, Blanco, J. J., additional, Parra, P., additional, Rodríguez-Polo, O., additional, Martín, C., additional, Terasa, J. C., additional, Boden, S., additional, Kulkarni, S. R., additional, Ravanbakhsh, A., additional, Yedla, M., additional, Xu, Z., additional, Andrews, G. B., additional, Schlemm, C. E., additional, Seifert, H., additional, Tyagi, K., additional, Lees, W. J., additional, and Hayes, J., additional

Published
2021
Full Text
View/download PDF

13. The long period of3He-rich solar energetic particles measured by Solar Orbiter 2020 November 17–23

Author

Bučík, R., primary, Mason, G. M., additional, Gómez-Herrero, R., additional, Lario, D., additional, Balmaceda, L., additional, Nitta, N. V., additional, Krupař, V., additional, Dresing, N., additional, Ho, G. C., additional, Allen, R. C., additional, Carcaboso, F., additional, Rodríguez-Pacheco, J., additional, Schuller, F., additional, Warmuth, A., additional, Wimmer-Schweingruber, R. F., additional, Freiherr von Forstner, J. L., additional, Andrews, G. B., additional, Berger, L., additional, Cernuda, I., additional, Espinosa Lara, F., additional, Lees, W. J., additional, Martín, C., additional, Pacheco, D., additional, Prieto, M., additional, Sánchez-Prieto, S., additional, Schlemm, C. E., additional, Seifert, H., additional, Tyagi, K., additional, Maksimovic, M., additional, Vecchio, A., additional, Kollhoff, A., additional, Kühl, P., additional, Xu, Z.G., additional, and Eldrum, S., additional

Published
2021
Full Text
View/download PDF

14. Suprathermal particles from corotating interaction regions during the first perihelion pass of Solar Orbiter

Author

Allen, R. C., primary, Mason, G. M., additional, Ho, G. C., additional, Rodríguez-Pacheco, J., additional, Wimmer-Schweingruber, R. F., additional, Andrews, G. B., additional, Berger, L., additional, Boden, S., additional, Cernuda, I., additional, Espinosa Lara, F., additional, Freiherr von Forstner, J. L., additional, Gómez-Herrero, R., additional, Hayes, J. R., additional, Kulkarni, S. R., additional, Lees, W. J., additional, Martin, C., additional, Pacheco, D., additional, Polo, O. R., additional, Prieto, M., additional, Ravanbakhsh, A., additional, Sánchez-Prieto, S., additional, Schlemm, C. E., additional, Seifert, H., additional, Terasa, J. C., additional, Tyagi, K., additional, Xu, Z., additional, and Yedla, M., additional

Published
2021
Full Text
View/download PDF

15. Energetic ions in the Venusian system: Insights from the first Solar Orbiter flyby

Author

Allen, R. C., primary, Cernuda, I., additional, Pacheco, D., additional, Berger, L., additional, Xu, Z. G., additional, Freiherr von Forstner, J. L., additional, Rodríguez-Pacheco, J., additional, Wimmer-Schweingruber, R. F., additional, Ho, G. C., additional, Mason, G. M., additional, Vines, S. K., additional, Khotyaintsev, Y., additional, Horbury, T., additional, Maksimovic, M., additional, Hadid, L. Z., additional, Volwerk, M., additional, Dimmock, A. P., additional, Sorriso-Valvo, L., additional, Stergiopoulou, K., additional, Andrews, G. B., additional, Angelini, V., additional, Bale, S. D., additional, Boden, S., additional, Böttcher, S. I., additional, Chust, T., additional, Eldrum, S., additional, Espada, P. P., additional, Espinosa Lara, F., additional, Evans, V., additional, Gómez-Herrero, R., additional, Hayes, J. R., additional, Hellín, A. M., additional, Kollhoff, A., additional, Krasnoselskikh, V., additional, Kretzschmar, M., additional, Kühl, P., additional, Kulkarni, S. R., additional, Lees, W. J., additional, Lorfèvre, E., additional, Martin, C., additional, O’Brien, H., additional, Plettemeier, D., additional, Polo, O. R., additional, Prieto, M., additional, Ravanbakhsh, A., additional, Sánchez-Prieto, S., additional, Schlemm, C. E., additional, Seifert, H., additional, Souček, J., additional, Steller, M., additional, Štverák, Š., additional, Terasa, J. C., additional, Trávníček, P., additional, Tyagi, K., additional, Vaivads, A., additional, Vecchio, A., additional, and Yedla, M., additional

Published
2021
Full Text
View/download PDF

16. Evidence for local particle acceleration in the first recurrent galactic cosmic ray depression observed by Solar Orbiter

Author

Aran, A., primary, Pacheco, D., additional, Laurenza, M., additional, Wijsen, N., additional, Lario, D., additional, Benella, S., additional, Richardson, I. G., additional, Samara, E., additional, Freiherr von Forstner, J. L., additional, Sanahuja, B., additional, Rodriguez, L., additional, Balmaceda, L., additional, Espinosa Lara, F., additional, Gómez-Herrero, R., additional, Steinvall, K., additional, Vecchio, A., additional, Krupar, V., additional, Poedts, S., additional, Allen, R. C., additional, Andrews, G. B., additional, Angelini, V., additional, Berger, L., additional, Berghmans, D., additional, Boden, S., additional, Böttcher, S. I., additional, Carcaboso, F., additional, Cernuda, I., additional, De Marco, R., additional, Eldrum, S., additional, Evans, V., additional, Fedorov, A., additional, Hayes, J., additional, Ho, G. C., additional, Horbury, T. S., additional, Janitzek, N. P., additional, Khotyaintsev, Yu. V., additional, Kollhoff, A., additional, Kühl, P., additional, Kulkarni, S. R., additional, Lees, W. J., additional, Louarn, P., additional, Magdalenic, J., additional, Maksimovic, M., additional, Malandraki, O., additional, Martínez, A., additional, Mason, G. M., additional, Martín, C., additional, O’Brien, H., additional, Owen, C., additional, Parra, P., additional, Prieto Mateo, M., additional, Ravanbakhsh, A., additional, Rodriguez-Pacheco, J., additional, Rodriguez Polo, O., additional, Sánchez Prieto, S., additional, Schlemm, C. E., additional, Seifert, H., additional, Terasa, J. C., additional, Tyagi, K., additional, Verbeeck, C., additional, Wimmer-Schweingruber, R. F., additional, Xu, Z. G., additional, Yedla, M. K., additional, and Zhukov, A. N., additional

Published
2021
Full Text
View/download PDF

17. The first widespread solar energetic particle event observed by Solar Orbiter on 2020 November 29

Author

Kollhoff, A., primary, Kouloumvakos, A., additional, Lario, D., additional, Dresing, N., additional, Gómez-Herrero, R., additional, Rodríguez-García, L., additional, Malandraki, O. E., additional, Richardson, I. G., additional, Posner, A., additional, Klein, K.-L., additional, Pacheco, D., additional, Klassen, A., additional, Heber, B., additional, Cohen, C. M. S., additional, Laitinen, T., additional, Cernuda, I., additional, Dalla, S., additional, Espinosa Lara, F., additional, Vainio, R., additional, Köberle, M., additional, Kühl, R., additional, Xu, Z. G., additional, Berger, L., additional, Eldrum, S., additional, Brüdern, M., additional, Laurenza, M., additional, Kilpua, E. J., additional, Aran, A., additional, Rouillard, A. P., additional, Bučík, R., additional, Wijsen, N., additional, Pomoell, J., additional, Wimmer-Schweingruber, R. F., additional, Martin, C., additional, Böttcher, S. I., additional, Freiherr von Forstner, J. L., additional, Terasa, J.-C., additional, Boden, S., additional, Kulkarni, S. R., additional, Ravanbakhsh, A., additional, Yedla, M., additional, Janitzek, N., additional, Rodríguez-Pacheco, J., additional, Prieto Mateo, M., additional, Sánchez Prieto, S., additional, Parra Espada, P., additional, Rodríguez Polo, O., additional, Martínez Hellín, A., additional, Carcaboso, F., additional, Mason, G. M., additional, Ho, G. C., additional, Allen, R. C., additional, Bruce Andrews, G., additional, Schlemm, C. E., additional, Seifert, H., additional, Tyagi, K., additional, Lees, W. J., additional, Hayes, J., additional, Bale, S. D., additional, Krupar, V., additional, Horbury, T. S., additional, Angelini, V., additional, Evans, V., additional, O’Brien, H., additional, Maksimovic, M., additional, Khotyaintsev, Yu. V., additional, Vecchio, A., additional, Steinvall, K., additional, and Asvestari, E., additional

Published
2021
Full Text
View/download PDF

18. First near-relativistic solar electron events observed by EPD onboard Solar Orbiter

Author

Gómez-Herrero, R., Pacheco, D., Kollhoff, A., Espinosa Lara, F., Freiherr von Forstner, J.L., Dresing, N., Vecchio, A., Lees, W.J., Hayes, J.R., Gómez-Herrero, R., Pacheco, D., Kollhoff, A., Espinosa Lara, F., Freiherr von Forstner, J.L., Dresing, N., Vecchio, A., Lees, W.J., and Hayes, J.R.

Abstract

Contains fulltext : 243986.pdf (Publisher’s version ) (Open Access)

Published
2021

20. The Solar Orbiter Science Activity Plan

Author

Zouganelis, I., De Groof, A., Walsh, A., Williams, D., Müller, D., St Cyr, O., Auchère, F., Berghmans, D., Fludra, A., Horbury, T., Howard, R., Krucker, S., Maksimovic, M., Owen, C., Rodríguez-Pacheco, J., Romoli, M., Solanki, S., Watson, C., Sanchez, L., Lefort, J., Osuna, P., Gilbert, H., Nieves-Chinchilla, T., Abbo, L., Alexandrova, O., Anastasiadis, A., Andretta, V., Antonucci, E., Appourchaux, T., Aran, A., Arge, C., Aulanier, G., Baker, D., Bale, S., Battaglia, M., Bellot Rubio, L., Bemporad, A., Berthomier, M., Bocchialini, K., Bonnin, X., Brun, A., Bruno, R., Buchlin, E., Büchner, J., Bucik, R., Carcaboso, F., Carr, R., Carrasco-Blázquez, I., Cecconi, B., Cernuda Cangas, I., Chen, C., Chitta, L., Chust, T., Dalmasse, K., D’Amicis, R., Da Deppo, V., De Marco, R., Dolei, S., Dolla, L., Dudok de Wit, T., Van Driel-Gesztelyi, L., Eastwood, J., Espinosa Lara, F., Etesi, L., Fedorov, A., Félix-Redondo, F., Fineschi, S., Fleck, B., Fontaine, D., Fox, N., Gandorfer, A., Génot, V., Georgoulis, M., Gissot, S., Giunta, A., Gizon, L., Gómez-Herrero, R., Gontikakis, C., Graham, G., Green, L., Grundy, T., Haberreiter, M., Harra, L., Hassler, D., Hirzberger, J., Ho, G., Hurford, G., Innes, D., Issautier, K., James, A., Janitzek, N., Janvier, M., Jeffrey, N., Jenkins, J., Khotyaintsev, Y., Klein, K.-L., Kontar, E., Kontogiannis, I., Krafft, C., Krasnoselskikh, V., Kretzschmar, M., Labrosse, N., Lagg, A., Landini, F., Lavraud, B., Leon, I., Lepri, S., Lewis, G., Liewer, P., Linker, J., Livi, S., Long, D., Louarn, P., Malandraki, O., Maloney, S., Martinez-Pillet, V., Martinovic, M., Masson, A., Matthews, S., Matteini, L., Meyer-Vernet, N., Moraitis, K., Morton, R., Musset, S., Nicolaou, G., Nindos, A., O’Brien, H., Orozco Suarez, D., Owens, M., Pancrazzi, M., Papaioannou, A., Parenti, S., Pariat, Etienne, Patsourakos, S., Perrone, D., Peter, H., Pinto, R., Plainaki, C., Plettemeier, D., Plunkett, S., Raines, J., Raouafi, N., Reid, H., Retinò, A., Rezeau, L., Rochus, P., Rodriguez, L., Rodriguez-Garcia, L., Roth, M., Rouillard, A., Sahraoui, F., Sasso, C., Schou, J., Schühle, U., Sorriso-Valvo, L., Soucek, J., Spadaro, D., Stangalini, M., Stansby, D., Steller, M., Strugarek, A., Štverák, Š., Susino, R., Telloni, D., Terasa, C., Teriaca, L., Toledo-Redondo, S., del Toro Iniesta, J., Tsiropoula, G., Tsounis, A., Tziotziou, K., Valentini, F., Vaivads, A., Vecchio, A., Velli, M., Verbeeck, C., Verdini, A., Verscharen, D., Vilmer, N., Vourlidas, A., Wicks, R., Wimmer-Schweingruber, R., Wiegelmann, T., Young, P., Zhukov, A., Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Plasmas (LPP), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU]Sciences of the Universe [physics], [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; Solar Orbiter is the first space mission observing the solar plasma both in situ and remotely, from a close distance, in and out of the ecliptic. The ultimate goal is to understand how the Sun produces and controls the heliosphere, filling the Solar System and driving the planetary environments. With six remote-sensing and four in-situ instrument suites, the coordination and planning of the operations are essential to address the following four top-level science questions: (1) What drives the solar wind and where does the coronal magnetic field originate?; (2) How do solar transients drive heliospheric variability?; (3) How do solar eruptions produce energetic particle radiation that fills the heliosphere?; (4) How does the solar dynamo work and drive connections between the Sun and the heliosphere? Maximising the mission's science return requires considering the characteristics of each orbit, including the relative position of the spacecraft to Earth (affecting downlink rates), trajectory events (such as gravitational assist manoeuvres), and the phase of the solar activity cycle. Furthermore, since each orbit's science telemetry will be downloaded over the course of the following orbit, science operations must be planned at mission level, rather than at the level of individual orbits. It is important to explore the way in which those science questions are translated into an actual plan of observations that fits into the mission, thus ensuring that no opportunities are missed. First, the overarching goals are broken down into specific, answerable questions along with the required observations and the so-called Science Activity Plan (SAP) is developed to achieve this. The SAP groups objectives that require similar observations into Solar Orbiter Observing Plans, resulting in a strategic, top-level view of the optimal opportunities for science observations during the mission lifetime. This allows for all four mission goals to be addressed. In this paper, we introduce Solar Orbiter's SAP through a series of examples and the strategy being followed.

Published
2020

21. The Energetic Particle Detector

Author

Rodríguez-Pacheco, J., Wimmer-Schweingruber, R., Mason, G., Ho, G., Sánchez-Prieto, S., Prieto, M., Martín, C., Seifert, H., Andrews, G., Kulkarni, S., Panitzsch, L., Boden, S., Böttcher, S., Cernuda, I., Elftmann, R., Espinosa Lara, F., Gómez-Herrero, R., Terasa, C., Almena, J., Begley, S., Böhm, E., Blanco, J., Boogaerts, W., Carrasco, A., Castillo, R., da Silva Fariña, A., de Manuel González, V., Drews, C., Dupont, A., Eldrum, S., Gordillo, C., Gutiérrez, O., Haggerty, D., Hayes, J., Heber, B., Hill, M., Jüngling, M., Kerem, S., Knierim, V., Köhler, J., Kolbe, S., Kulemzin, A., Lario, D., Lees, W., Liang, S., Martínez Hellín, A., Meziat, D., Montalvo, A., Nelson, K., Parra, P., Paspirgilis, R., Ravanbakhsh, A., Richards, M., Rodríguez-Polo, O., Russu, A., Sánchez, I., Schlemm, C., Schuster, B., Seimetz, L., Steinhagen, J., Tammen, J., Tyagi, K., Varela, T., Yedla, M., Yu, J., Agueda, N., Aran, A., Horbury, T., Klecker, B., Klein, K.-L., Kontar, E., Krucker, S., Maksimovic, M., Malandraki, O., Owen, C., Pacheco, D., Sanahuja, B., Vainio, R., Connell, J., Dalla, S., Dröge, W., Gevin, O., Gopalswamy, N., Kartavykh, Y., Kudela, K., Limousin, O., Makela, P., Mann, G., Önel, H., Posner, A., Ryan, J., Soucek, J., Hofmeister, S., Vilmer, N., Walsh, A., Wang, L., Wiedenbeck, M., Wirth, K., Zong, Q., Universidad de Alcalá - University of Alcalá (UAH), Institut für Experimentelle und Angewandte Physik [Kiel] (IEAP), Christian-Albrechts-Universität zu Kiel (CAU), Johns Hopkins University Applied Physics Laboratory [Laurel, MD] (APL), Universidad de Tarapaca, Paul Scherrer Institute (PSI), Indian Institute of Technology Bombay (IIT Bombay), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)

Subjects
[SDU]Sciences of the Universe [physics], Physics::Space Physics, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics
Abstract

International audience; After decades of observations of solar energetic particles from space-based observatories, relevant questions on particle injection, transport, and acceleration remain open. To address these scientific topics, accurate measurements of the particle properties in the inner heliosphere are needed. In this paper we describe the Energetic Particle Detector (EPD), an instrument suite that is part of the scientific payload aboard the Solar Orbiter mission. Solar Orbiter will approach the Sun as close as 0.28 au and will provide extra-ecliptic measurements beyond ∼30° heliographic latitude during the later stages of the mission. The EPD will measure electrons, protons, and heavy ions with high temporal resolution over a wide energy range, from suprathermal energies up to several hundreds of megaelectronvolts/nucleons. For this purpose, EPD is composed of four units: the SupraThermal Electrons and Protons (STEP), the Electron Proton Telescope (EPT), the Suprathermal Ion Spectrograph (SIS), and the High-Energy Telescope (HET) plus the Instrument Control Unit that serves as power and data interface with the spacecraft. The low-energy population of electrons and ions will be covered by STEP and EPT, while the high-energy range will be measured by HET. Elemental and isotopic ion composition measurements will be performed by SIS and HET, allowing full particle identification from a few kiloelectronvolts up to several hundreds of megaelectronvolts/nucleons. Angular information will be provided by the separate look directions from different sensor heads, on the ecliptic plane along the Parker spiral magnetic field both forward and backwards, and out of the ecliptic plane observing both northern and southern hemispheres. The unparalleled observations of EPD will provide key insights into long-open and crucial questions about the processes that govern energetic particles in the inner heliosphere.

Published
2020

22. The Solar Orbiter Science Activity Plan : Translating solar and heliospheric physics questions into action

Author

Zouganelis, I., De Groof, A., Walsh, A. P., Williams, D. R., Mueller, D., St Cyr, O. C., Auchere, F., Berghmans, D., Fludra, A., Horbury, T. S., Howard, R. A., Krucker, S., Maksimovic, M., Owen, C. J., Rodriguez-Pacheco, J., Romoli, M., Solanki, S. K., Watson, C., Sanchez, L., Lefort, J., Osuna, P., Gilbert, H. R., Nieves-Chinchilla, T., Abbo, L., Alexandrova, O., Anastasiadis, A., Andretta, V., Antonucci, E., Appourchaux, T., Aran, A., Arge, C. N., Aulanier, G., Baker, D., Bale, S. D., Battaglia, M., Bellot Rubio, L., Bemporad, A., Berthomier, M., Bocchialini, K., Bonnin, X., Brun, A. S., Bruno, R., Buchlin, E., Buechner, J., Bucik, R., Carcaboso, F., Carr, R., Carrasco-Blazquez, I., Cecconi, B., Cernuda Cangas, I., Chen, C. H. K., Chitta, L. P., Chust, T., Dalmasse, K., D'Amicis, R., Da Deppo, V., De Marco, R., Dolei, S., Dolla, L., de Wit, T. Dudok, van Driel-Gesztelyi, L., Eastwood, J. P., Espinosa Lara, F., Etesi, L., Fedorov, A., Felix-Redondo, F., Fineschi, S., Fleck, B., Fontaine, D., Fox, N. J., Gandorfer, A., Genot, V., Georgoulis, M. K., Gissot, S., Giunta, A., Gizon, L., Gomez-Herrero, R., Gontikakis, C., Graham, G., Green, L., Grundy, T., Haberreiter, M., Harra, L. K., Hassler, D. M., Hirzberger, J., Ho, G. C., Hurford, G., Innes, D., Issautier, K., James, A. W., Janitzek, N., Janvier, M., Jeffrey, N., Jenkins, J., Khotyaintsev, Yuri, Klein, K. -L, Kontar, E. P., Kontogiannis, I., Krafft, C., Krasnoselskikh, V., Kretzschmar, M., Labrosse, N., Lagg, A., Landini, F., Lavraud, B., Leon, I., Lepri, S. T., Lewis, G. R., Liewer, P., Linker, J., Livi, S., Long, D. M., Louarn, P., Malandraki, O., Maloney, S., Martinez-Pillet, V., Martinovic, M., Masson, A., Matthews, S., Matteini, L., Meyer-Vernet, N., Moraitis, K., Morton, R. J., Musset, S., Nicolaou, G., Nindos, A., O'Brien, H., Orozco Suarez, D., Owens, M., Pancrazzi, M., Papaioannou, A., Parenti, S., Pariat, E., Patsourakos, S., Perrone, D., Peter, H., Pinto, R. F., Plainaki, C., Plettemeier, D., Plunkett, S. P., Raines, J. M., Raouafi, N., Reid, H., Retino, A., Rezeau, L., Rochus, P., Rodriguez, L., Rodriguez-Garcia, L., Roth, M., Rouillard, A. P., Sahraoui, F., Sasso, C., Schou, J., Schuehle, U., Sorriso-Valvo, L., Soucek, J., Spadaro, D., Stangalini, M., Stansby, D., Steller, M., Strugarek, A., Stverak, S., Susino, R., Telloni, D., Terasa, C., Teriaca, L., Toledo-Redondo, S., del Toro Iniesta, J. C., Tsiropoula, G., Tsounis, A., Tziotziou, K., Valentini, F., Vaivads, A., Vecchio, A., Velli, M., Verbeeck, C., Verdini, A., Verscharen, D., Vilmer, N., Vourlidas, A., Wicks, R., Wimmer-Schweingruber, R. F., Wiegelmann, T., Young, P. R., Zhukov, A. N., Zouganelis, I., De Groof, A., Walsh, A. P., Williams, D. R., Mueller, D., St Cyr, O. C., Auchere, F., Berghmans, D., Fludra, A., Horbury, T. S., Howard, R. A., Krucker, S., Maksimovic, M., Owen, C. J., Rodriguez-Pacheco, J., Romoli, M., Solanki, S. K., Watson, C., Sanchez, L., Lefort, J., Osuna, P., Gilbert, H. R., Nieves-Chinchilla, T., Abbo, L., Alexandrova, O., Anastasiadis, A., Andretta, V., Antonucci, E., Appourchaux, T., Aran, A., Arge, C. N., Aulanier, G., Baker, D., Bale, S. D., Battaglia, M., Bellot Rubio, L., Bemporad, A., Berthomier, M., Bocchialini, K., Bonnin, X., Brun, A. S., Bruno, R., Buchlin, E., Buechner, J., Bucik, R., Carcaboso, F., Carr, R., Carrasco-Blazquez, I., Cecconi, B., Cernuda Cangas, I., Chen, C. H. K., Chitta, L. P., Chust, T., Dalmasse, K., D'Amicis, R., Da Deppo, V., De Marco, R., Dolei, S., Dolla, L., de Wit, T. Dudok, van Driel-Gesztelyi, L., Eastwood, J. P., Espinosa Lara, F., Etesi, L., Fedorov, A., Felix-Redondo, F., Fineschi, S., Fleck, B., Fontaine, D., Fox, N. J., Gandorfer, A., Genot, V., Georgoulis, M. K., Gissot, S., Giunta, A., Gizon, L., Gomez-Herrero, R., Gontikakis, C., Graham, G., Green, L., Grundy, T., Haberreiter, M., Harra, L. K., Hassler, D. M., Hirzberger, J., Ho, G. C., Hurford, G., Innes, D., Issautier, K., James, A. W., Janitzek, N., Janvier, M., Jeffrey, N., Jenkins, J., Khotyaintsev, Yuri, Klein, K. -L, Kontar, E. P., Kontogiannis, I., Krafft, C., Krasnoselskikh, V., Kretzschmar, M., Labrosse, N., Lagg, A., Landini, F., Lavraud, B., Leon, I., Lepri, S. T., Lewis, G. R., Liewer, P., Linker, J., Livi, S., Long, D. M., Louarn, P., Malandraki, O., Maloney, S., Martinez-Pillet, V., Martinovic, M., Masson, A., Matthews, S., Matteini, L., Meyer-Vernet, N., Moraitis, K., Morton, R. J., Musset, S., Nicolaou, G., Nindos, A., O'Brien, H., Orozco Suarez, D., Owens, M., Pancrazzi, M., Papaioannou, A., Parenti, S., Pariat, E., Patsourakos, S., Perrone, D., Peter, H., Pinto, R. F., Plainaki, C., Plettemeier, D., Plunkett, S. P., Raines, J. M., Raouafi, N., Reid, H., Retino, A., Rezeau, L., Rochus, P., Rodriguez, L., Rodriguez-Garcia, L., Roth, M., Rouillard, A. P., Sahraoui, F., Sasso, C., Schou, J., Schuehle, U., Sorriso-Valvo, L., Soucek, J., Spadaro, D., Stangalini, M., Stansby, D., Steller, M., Strugarek, A., Stverak, S., Susino, R., Telloni, D., Terasa, C., Teriaca, L., Toledo-Redondo, S., del Toro Iniesta, J. C., Tsiropoula, G., Tsounis, A., Tziotziou, K., Valentini, F., Vaivads, A., Vecchio, A., Velli, M., Verbeeck, C., Verdini, A., Verscharen, D., Vilmer, N., Vourlidas, A., Wicks, R., Wimmer-Schweingruber, R. F., Wiegelmann, T., Young, P. R., and Zhukov, A. N.

Abstract

Solar Orbiter is the first space mission observing the solar plasma both in situ and remotely, from a close distance, in and out of the ecliptic. The ultimate goal is to understand how the Sun produces and controls the heliosphere, filling the Solar System and driving the planetary environments. With six remote-sensing and four in-situ instrument suites, the coordination and planning of the operations are essential to address the following four top-level science questions: (1) What drives the solar wind and where does the coronal magnetic field originate?; (2) How do solar transients drive heliospheric variability?; (3) How do solar eruptions produce energetic particle radiation that fills the heliosphere?; (4) How does the solar dynamo work and drive connections between the Sun and the heliosphere? Maximising the mission's science return requires considering the characteristics of each orbit, including the relative position of the spacecraft to Earth (affecting downlink rates), trajectory events (such as gravitational assist manoeuvres), and the phase of the solar activity cycle. Furthermore, since each orbit's science telemetry will be downloaded over the course of the following orbit, science operations must be planned at mission level, rather than at the level of individual orbits. It is important to explore the way in which those science questions are translated into an actual plan of observations that fits into the mission, thus ensuring that no opportunities are missed. First, the overarching goals are broken down into specific, answerable questions along with the required observations and the so-called Science Activity Plan (SAP) is developed to achieve this. The SAP groups objectives that require similar observations into Solar Orbiter Observing Plans, resulting in a strategic, top-level view of the optimal opportunities for science observations during the mission lifetime. This allows for all four mission goals to be addressed. In this paper, we introduce

Published
2020
Full Text
View/download PDF

25. Models and data analysis tools for the Solar Orbiter mission

Author

Rouillard, A. P., primary, Pinto, R. F., additional, Vourlidas, A., additional, De Groof, A., additional, Thompson, W. T., additional, Bemporad, A., additional, Dolei, S., additional, Indurain, M., additional, Buchlin, E., additional, Sasso, C., additional, Spadaro, D., additional, Dalmasse, K., additional, Hirzberger, J., additional, Zouganelis, I., additional, Strugarek, A., additional, Brun, A. S., additional, Alexandre, M., additional, Berghmans, D., additional, Raouafi, N. E., additional, Wiegelmann, T., additional, Pagano, P., additional, Arge, C. N., additional, Nieves-Chinchilla, T., additional, Lavarra, M., additional, Poirier, N., additional, Amari, T., additional, Aran, A., additional, Andretta, V., additional, Antonucci, E., additional, Anastasiadis, A., additional, Auchère, F., additional, Bellot Rubio, L., additional, Nicula, B., additional, Bonnin, X., additional, Bouchemit, M., additional, Budnik, E., additional, Caminade, S., additional, Cecconi, B., additional, Carlyle, J., additional, Cernuda, I., additional, Davila, J. M., additional, Etesi, L., additional, Espinosa Lara, F., additional, Fedorov, A., additional, Fineschi, S., additional, Fludra, A., additional, Génot, V., additional, Georgoulis, M. K., additional, Gilbert, H. R., additional, Giunta, A., additional, Gomez-Herrero, R., additional, Guest, S., additional, Haberreiter, M., additional, Hassler, D., additional, Henney, C. J., additional, Howard, R. A., additional, Horbury, T. S., additional, Janvier, M., additional, Jones, S. I., additional, Kozarev, K., additional, Kraaikamp, E., additional, Kouloumvakos, A., additional, Krucker, S., additional, Lagg, A., additional, Linker, J., additional, Lavraud, B., additional, Louarn, P., additional, Maksimovic, M., additional, Maloney, S., additional, Mann, G., additional, Masson, A., additional, Müller, D., additional, Önel, H., additional, Osuna, P., additional, Orozco Suarez, D., additional, Owen, C. J., additional, Papaioannou, A., additional, Pérez-Suárez, D., additional, Rodriguez-Pacheco, J., additional, Parenti, S., additional, Pariat, E., additional, Peter, H., additional, Plunkett, S., additional, Pomoell, J., additional, Raines, J. M., additional, Riethmüller, T. L., additional, Rich, N., additional, Rodriguez, L., additional, Romoli, M., additional, Sanchez, L., additional, Solanki, S. K., additional, St Cyr, O. C., additional, Straus, T., additional, Susino, R., additional, Teriaca, L., additional, del Toro Iniesta, J. C., additional, Ventura, R., additional, Verbeeck, C., additional, Vilmer, N., additional, Warmuth, A., additional, Walsh, A. P., additional, Watson, C., additional, Williams, D., additional, Wu, Y., additional, and Zhukov, A. N., additional

Published
2020
Full Text
View/download PDF

26. Coordination of the in situ payload of Solar Orbiter

Author

Walsh, A. P., primary, Horbury, T. S., additional, Maksimovic, M., additional, Owen, C. J., additional, Rodríguez-Pacheco, J., additional, Wimmer-Schweingruber, R. F., additional, Zouganelis, I., additional, Anekallu, C., additional, Bonnin, X., additional, Bruno, R., additional, Carrasco Blázquez, I., additional, Cernuda, I., additional, Chust, T., additional, De Groof, A., additional, Espinosa Lara, F., additional, Fazakerley, A. N., additional, Gilbert, H. R., additional, Gómez-Herrero, R., additional, Ho, G. C., additional, Krucker, S., additional, Lepri, S. T., additional, Lewis, G. R., additional, Livi, S., additional, Louarn, P., additional, Müller, D., additional, Nieves-Chinchilla, T., additional, O’Brien, H., additional, Osuna, P., additional, Plasson, P., additional, Raines, J. M., additional, Rouillard, A. P., additional, St Cyr, O. C., additional, Sánchez, L., additional, Soucek, J., additional, Varsani, A., additional, Verscharen, D., additional, Watson, C. J., additional, Watson, G., additional, and Williams, D. R., additional

Published
2020
Full Text
View/download PDF

29. The Solar Orbiter Mission: an Energetic Particle Perspective

Author

Raúl Gómez-Herrero, Rodríguez-Pacheco, J., Wimmer-Schweingruber, R. F., Mason, G. M., Sánchez-Prieto, S., Martín, C., Prieto, M., Ho, G. C., Espinosa Lara, F., Cernuda, I., Blanco, J. J., Russu, A., Rodríguez Polo, O., Kulkarni, S. R., Terasa, C., Panitzsch, L., Böttcher, S. I., Boden, S., Heber, B., Steinhagen, J., Tammen, J., Köhler, J., Drews, C., Elftmann, R., Ravanbakhsh, A., Seimetz, L., Schuster, B., Yedla, M., Valtonen, E., and Vainio, R.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics - Solar and Stellar Astrophysics, Physics - Space Physics, Physics::Space Physics, FOS: Physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics (astro-ph.IM), Solar and Stellar Astrophysics (astro-ph.SR), Space Physics (physics.space-ph)
Abstract

Solar Orbiter is a joint ESA-NASA mission planed for launch in October 2018. The science payload includes remote-sensing and in-situ instrumentation designed with the primary goal of understanding how the Sun creates and controls the heliosphere. The spacecraft will follow an elliptical orbit around the Sun, with perihelion as close as 0.28 AU. During the late orbit phase the orbital plane will reach inclinations above 30 degrees, allowing direct observations of the solar polar regions. The Energetic Particle Detector (EPD) is an instrument suite consisting of several sensors measuring electrons, protons and ions over a broad energy interval (2 keV to 15 MeV for electrons, 3 keV to 100 MeV for protons and few tens of keV/nuc to 450 MeV/nuc for ions), providing composition, spectra, timing and anisotropy information. We present an overview of Solar Orbiter from the energetic particle perspective, summarizing the capabilities of EPD and the opportunities that these new observations will provide for understanding how energetic particles are accelerated during solar eruptions and how they propagate through the Heliosphere., XXV ECRS 2016 Proceedings - eConf C16-09-04.3

Published
2017

32. The environment of the fast rotating star Achernar

Author

Domiciano de Souza, Armando, Kervella, P., Moser Faes, D., Dalla Vedova, G., Mérand, A., Le Bouquin, J.-B., Espinosa Lara, F., Rieutord, M., Bendjoya, P., Carciofi, A., Hadjara, M., Millour, F., Vakili, F., Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Instituto de Astronomia, Geofisica e Ciencias Atmosfericas da Universidade de Sao Paulo (IAGCAUS), Université de Sao Paulo, European Southern Observatory (ESO), Institut de Planétologie et d'Astrophysique de Grenoble (IPAG ), Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], [SDU]Sciences of the Universe [physics], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2014

33. Stochastic gravito-inertial modes discovered by CoRoT in the hot Be star HD 51452

Author

Neiner, C., Floquet, M., Samadi, R., Espinosa-Lara, F., Frémat, Y., Mathis, S., Leroy, B., De Batz, B., Rainer, M., Poretti, E., Mathias, P., Guarro Fló, J., Buil, C., Ribeiro, J., Alecian, E., Andrade, L., Briquet, M., Diago Nebot, Pascual David, Emilio, M., Fabregat Llueca, Juan, Gutiérrez Soto, Juan, Hubert, A.M., Janot-Pacheco, E., Martayan, C., Semaan, T., Suso, J., and Zorec, J.

Subjects
Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Partícules (Física nuclear), Ciència Ensenyament
Abstract

Context.Be stars are rapidly rotating stars with a circumstellar decretion disk. They usually undergo pressure and/or gravity pulsation modes excited by the κ-mechanism, i.e. an effect of the opacity of iron-peak elements in the envelope of the star. In the Milky Way,p-modes are observed in stars that are hotter than or equal to the B3 spectral type, while g-modes are observed at the B2 spectral type and cooler.Aims.We observed a B0IVe star, HD 51452,with the high-precision, high-cadence photometric CoRoT satellite and high-resolution, ground-based HARPS and SOPHIE spectrographs to study its pulsations in great detail. We also used the lower resolution spectra available in the BeSS atabase. Methods.We analyzed the CoRoT and spectroscopic data with several methods: Clean -NG, Freq Find, and a sliding window method.We also analyzed spectral quantities, such as the violet over red (V/R) emission variations, to obtain information about the variation in the circumstellar environment. We calculated a stellar structure model with the ESTER code to test the various interpretation of the results.Results.We detect 189 frequencies of variations in the CoRoT light curve in the range between 0 and 4.5 c d−1. The main frequencies are also recovered in the spectroscopic data. In particular we find that HD 51452 undergoes gravito-inertial modes that are not in the domain of those excited by the κ-mechanism. We propose that these are stochastic modes excited in the convective zones and that at least some of them are a multiplet of r-modes (i.e. subinertial modes mainly driven by the Coriolis acceleration). Stochastically excited gravito-inertial modes had never been observed in any star, and theory predicted that their very low amplitudes would be undetectable even with CoRoT. We suggest that the amplitudes are enhanced in HD 51452 because of the very rapid stellar rotation.In addition, we find that the amplitude variations of these modes are related to the occurrence of minor outbursts.Conclusions.Thanks to CoRoT data, we have detected a new kind of pulsations in HD 51452, which are stochastically excited gravito-inertial modes, probably due to its very rapid rotation. These modes are probably also present in other rapidly rotating hot Be stars.

Published
2012

34. The B0.5IVe CoRoT target HD 49 330. I. Photometric analysis from CoRoT data

Author

Huat, A.L., Hubert, A.M., Floquet, M., Neiner, C., Frémat, Y., Gutiérrez Soto, Juan, Baudin, F., Andrade, L., De Batz, B., Diago Nebot, Pascual David, Emilio, M., Espinosa-Lara, F., Fabregat Llueca, Juan, Janot-Pacheco, E., Leroy, B., Martayan, C., Semaan, T., Suso, J., Michel, E., and Samadi, R.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astronomia, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Ciència Ensenyament
Abstract

Context. Be stars undergo outbursts producing a circumstellar disk from the ejected material. The beating of non-radial pulsations has been put forward as a possible mechanism of ejection. Aims. We analyze the pulsational behavior of the early B0.5IVe star HD 49330 observed during the first CoRoT long run towards the Galactical anticenter (LRA1). This Be star is located close to the lower edge of the β Cephei instability strip in the HR diagram and showed a 0.03 mag outburst during the CoRoT observations. It is thus an ideal case for testing the aforementioned hypothesis. Methods. We analyze the CoRoT light curve of HD 49330 usin g Fourier methods and non-lin ear least square fitting. Results. In this star, we find pulsation modes typical of β Cep stars (p modes) and SPB stars (g modes) with amplitude variations along the run directly correlated with the outburst. These results provide new clues about the origin of the Be phenomenon as well as strong constraints on the seismic modelling of Be stars.

Published
2009

35. The B0.5IVe CoRoT target HD 49 330. II. Spectroscopic ground-based observations

Author

Floquet, M., Hubert, A.M., Huat, A.L., Frémat, Y., Janot-Pacheco, E., Gutiérrez Soto, Juan, Neiner, C., De Batz, B., Leroy, B., Poretti, E., Amado, P., Catala, C., Rainer, M., Díaz, D., Uytterhoeven, K., Andrade, L., Diago Nebot, Pascual David, M. Emilio, Espinosa-Lara, F., Fabregat Llueca, Juan, Martayan, C., Semaan, T., and Suso, J.

Subjects
Astronomia, Ciència Ensenyament
Abstract

Context. We present spectroscopic ground-based observations of the early Be star HD 49330 obtained simultaneously with the CoRoT-LRA1 run just before the burst observed in the CoRoT data. Aims. Ground-based spectroscopic observations of the early Be star HD 49330 obtained during the precursor phase and just before the start of an outburst allow us to disantangle stellar and circumstellar contributions and identify modes of stellar pulsations in this rapidly rotating star. Methods. Time series analysis (TSA) is performed on photospheric line profiles of He i and Si iii by means of the least squares method. Results. We find two main frequencies f1 = 11.86 c d^−1 and f2 = 16.89 c d^−1 which can be associated with high order p-mode pulsations. We also detect a frequency f3 = 1.51 c d^−1 which can be associated with a low order g-mode. Moreover we show that the stellar line profile variability changed over the spectroscopic run. These results are in agreement with the results of the CoRoT data analysis, as shown in Huat et al. (2009). Conclusions. Our study of mid- and short-term spect roscopic variability allows the identification of p- and g- modes in HD 49330. It also allows us to display changes in the line profile variability before the start of an outburst. This brings new constraints for the seimic modelling of this star.

Published
2009

36. The pulsations of the B5IVe star HD 181 231 observed with CoRoT and ground-based spectroscopy

Author

Neiner, C., Gutiérrez Soto, Juan, Baudin, F., De Batz, B., Frémat, Y., Huat, A.L., Floquet, M., Hubert, A.M., Leroy, B., Diago Nebot, Pascual David, Poretti, E., Carrier, F., Rainer, M., Catala, C., Thizy, O., Buil, C., Ribeiro, J., Andrade, L., Emilio, M., Espinosa-Lara, F., Fabregat Llueca, Juan, Janot-Pacheco, E., Martayan, C., Semaan, T., Suso, J., Baglin, A., Michel, E., and Samadi, R.

Subjects
Astronomia, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Ciència Ensenyament
Abstract

Context. HD 181231 is a B5IVe star, which has been observed with the CoRoT satellite during ∼5 consecutive months and simultaneously from the ground in spectroscopy and spectropolarimetry. Aims. By analysing these data, we aim to detect and characterize as many pulsation frequencies as possible, to search for the presence of beating effects possibly at the origin of the Be phenomenon. Our results will also pr ovide a basis for seismic modelling. Methods. The fundamental parameters of the star are determined from spectral fitting and from the study of the circumstellar emission. The CoRoT photometric data and ground-based spectroscopy are analysed using several Fourier Techniques: CLEAN-NG,PASPER,and TISAFT, as well as a time-frequency technique. A search for a magnetic field is performed by applying the LSD technique to the spectropolarimetric data. Results. We find that HD 181231 is a B5IVe star seen with an inclination of ∼45 degrees. No magnetic field is detected in its photo-sphere. We detect at least 10 independent significant frequencies of variations among the 54 detected frequencies, interpreted in termsof non-radial pulsation modes and rotation. Two longer-term variations are also detected: one at ∼14 days resulting from a beating effect between the two main frequencies of short-term variations, the other at ∼116 days due either to a beating of frequencies or to a zonal pulsation mode. Conclusions. Our analysis of the CoRoT light curve and ground-based spectroscopic data of HD 181231 has led to the determination of the fundamental and pulsational parameters of the star, including beating effects. This will allow a precise seismic modelling of this star.

Published
2009

37. Low-amplitude variations detected by CoRoT in the B8IIIe star HD 175 869

Author

Gutiérrez Soto, Juan, Floquet, M., Samadi, R., Neiner, C., Garrido, R., Fabregat Llueca, Juan, Frémat, Y., Diago Nebot, Pascual David, Huat, A. L., Leroy, B., Emilio, M., Hubert, A.M., Thizy, O., Andrade, L., De Batz, B., Janot-Pacheco, E., Espinosa-Lara, F., Martayan, C., Suso, J., Auvergne, M., Chaintreuil, S., Michel, E., and Catala, C.

Subjects
Esteroides, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics
Abstract

Context.The origin of the short-term variability in Be stars remains a matter of controversy. Pulsations and rotational modulation are the components of the favored hypothesis.Aims.We present our analysis of CoRoT data of the B8IIIe star HD 175869 observed during the first short run in the center direction (SRC1).Methods.We review both the instrumental effects visible in the CoRoT light curve and the analysis methods used by the CoRoT Be team. We applied these methods to the CoRoT light curve of the star HD 175869. A search for line-profile variations in the spectroscopic data was also performed. We also searched for a magnetic field, by applying the LSD technique to spectropolarimetric data.Results.The light curve exhibits low-amplitude variations of the order of 300 μ mag with a double wave shape. A frequency within the range determined for the rotational frequency and 6 of its harmonics are detected. The main frequency and its first harmonic exhibit amplitude variations of a few days. Other significant frequencies of low-amplitude from 25 to a few μmag are also found. The analysis of line profiles from ground-based spectrosc opic data does not detect an y variation. In addition, no Zeeman signature was found.Conclusions.Inhomogeneities caused by stellar activity in or just above the photosphere are proposed to produce the photometric variability detected by CoRoT in the Be star HD 175869. The hypothesis that non-radial pulsations are the origin of these variations cannot be excluded.

Published
2009

42. Stochastic gravito-inertial modes discovered by CoRoT in the hot Be star HD 51452

Author

Neiner, C., primary, Floquet, M., additional, Samadi, R., additional, Espinosa Lara, F., additional, Frémat, Y., additional, Mathis, S., additional, Leroy, B., additional, de Batz, B., additional, Rainer, M., additional, Poretti, E., additional, Mathias, P., additional, Guarro Fló, J., additional, Buil, C., additional, Ribeiro, J., additional, Alecian, E., additional, Andrade, L., additional, Briquet, M., additional, Diago, P. D., additional, Emilio, M., additional, Fabregat, J., additional, Gutiérrez-Soto, J., additional, Hubert, A.-M., additional, Janot-Pacheco, E., additional, Martayan, C., additional, Semaan, T., additional, Suso, J., additional, and Zorec, J., additional

Published
2012
Full Text
View/download PDF

44. Photometric variability of the Be star CoRoT-ID 102761769

Author

Emilio, M., primary, Andrade, L., additional, Janot-Pacheco, E., additional, Baglin, A., additional, Gutiérrez-Soto, J., additional, Suárez, J. C., additional, de Batz, B., additional, Diago, P., additional, Fabregat, J., additional, Floquet, M., additional, Frémat, Y., additional, Huat, A. L., additional, Hubert, A. M., additional, Espinosa Lara, F., additional, Leroy, B., additional, Martayan, C., additional, Neiner, C., additional, Semaan, T., additional, and Suso, J., additional

Published
2010
Full Text
View/download PDF

45. The pulsations of the B5IVe star HD 181231 observed with CoRoT and ground-based spectroscopy

Author

Neiner, C., primary, Gutiérrez-Soto, J., additional, Baudin, F., additional, de Batz, B., additional, Frémat, Y., additional, Huat, A. L., additional, Floquet, M., additional, Hubert, A.-M., additional, Leroy, B., additional, Diago, P. D., additional, Poretti, E., additional, Carrier, F., additional, Rainer, M., additional, Catala, C., additional, Thizy, O., additional, Buil, C., additional, Ribeiro, J., additional, Andrade, L., additional, Emilio, M., additional, Espinosa Lara, F., additional, Fabregat, J., additional, Janot-Pacheco, E., additional, Martayan, C., additional, Semaan, T., additional, Suso, J., additional, Baglin, A., additional, Michel, E., additional, and Samadi, R., additional

Published
2009
Full Text
View/download PDF

46. The B0.5IVe CoRoT target HD 49330

Author

Huat, A.-L., primary, Hubert, A.-M., additional, Baudin, F., additional, Floquet, M., additional, Neiner, C., additional, Frémat, Y., additional, Gutiérrez-Soto, J., additional, Andrade, L., additional, de Batz, B., additional, Diago, P. D., additional, Emilio, M., additional, Espinosa Lara, F., additional, Fabregat, J., additional, Janot-Pacheco, E., additional, Leroy, B., additional, Martayan, C., additional, Semaan, T., additional, Suso, J., additional, Auvergne, M., additional, Catala, C., additional, Michel, E., additional, and Samadi, R., additional

Published
2009
Full Text
View/download PDF

47. Low-amplitude variations detected by CoRoT in the B8IIIe star HD 175869

Author

Gutiérrez-Soto, J., primary, Floquet, M., additional, Samadi, R., additional, Neiner, C., additional, Garrido, R., additional, Fabregat, J., additional, Frémat, Y., additional, Diago, P. D., additional, Huat, A.-L., additional, Leroy, B., additional, Emilio, M., additional, Hubert, A.-M., additional, Thizy L. Andrade, O., additional, de Batz, B., additional, Janot-Pacheco, E., additional, Espinosa Lara, F., additional, Martayan, C., additional, Semaan, T., additional, Suso, J., additional, Auvergne, M., additional, Chaintreuil, S., additional, Michel, E., additional, and Catala, C., additional

Published
2009
Full Text
View/download PDF

48. Pulsations in the late-type Be star HD 50 209 detected by CoRoT

Author

Diago, P. D., primary, Gutiérrez-Soto, J., additional, Auvergne, M., additional, Fabregat, J., additional, Hubert, A.-M., additional, Floquet, M., additional, Frémat, Y., additional, Garrido, R., additional, Andrade, L., additional, de Batz, B., additional, Emilio, M., additional, Espinosa Lara, F., additional, Huat, A.-L., additional, Janot-Pacheco, E., additional, Leroy, B., additional, Martayan, C., additional, Neiner, C., additional, Semaan, T., additional, Suso, J., additional, Catala, C., additional, Poretti, E., additional, Rainer, M., additional, Uytterhoeven, K., additional, Michel, E., additional, and Samadi, R., additional

Published
2009
Full Text
View/download PDF

49. The B0.5 IVe CoRoT target HD 49330

Author

Floquet, M., primary, Hubert, A.-M., additional, Huat, A.-L., additional, Frémat, Y., additional, Janot-Pacheco, E., additional, Gutiérrez-Soto, J., additional, Neiner, C., additional, de Batz, B., additional, Leroy, B., additional, Poretti, E., additional, Amado, P., additional, Catala, C., additional, Rainer, M., additional, Diaz, D., additional, Uytterhoeven, K., additional, Andrade, L., additional, Diago, P. D., additional, Emilio, M., additional, Espinosa Lara, F., additional, Fabregat, J., additional, Martayan, C., additional, Semaan, T., additional, and Suso, J., additional

Published
2009
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results