The ratio of horizontal to vertical displacement in solar oscillations estimated from combined SO/PHI and SDO/HMI observations

J. Schou; J. Hirzberger; D. Orozco Suárez; K. Albert; N. Albelo Jorge; T. Appourchaux; A. Alvarez-Herrero; J. Blanco Rodríguez; A. Gandorfer; D. Germerott; L. Guerrero; P. Gutierrez-Marques; F. Kahil; M. Kolleck; S. K. Solanki; J. C.Del Toro Iniesta; R. Volkmer; J. Woch; B. Fiethe; I. Pérez-Grande; E. Sanchis Kilders; M. Balaguer Jiménez; L. R.Bellot Rubio; D. Calchetti; M. Carmona; W. Deutsch; A. Feller; G. Fernandez-Rico; A. Fernández-Medina; P. García Parejo; J. L.Gasent Blesa; L. Gizon; B. Grauf; K. Heerlein; A. Korpi-Lagg; A. López Jiménez; T. Maue; R. Meller; A. Moreno Vacas; R. Müller; E. Nakai; W. Schmidt; J. Sinjan; J. Staub; H. Strecker; I. Torralbo; G. Valori

doi:10.1051/0004-6361/202345946

The ratio of horizontal to vertical displacement in solar oscillations estimated from combined SO/PHI and SDO/HMI observations

J. Schou^*
, J. Hirzberger
, D. Orozco Suárez
, K. Albert
, N. Albelo Jorge
, T. Appourchaux
, A. Alvarez-Herrero
, J. Blanco Rodríguez
, A. Gandorfer
, D. Germerott
, L. Guerrero
, P. Gutierrez-Marques
, F. Kahil
, M. Kolleck
, S. K. Solanki
, J. C.Del Toro Iniesta
, R. Volkmer
, J. Woch
, B. Fiethe
, I. Pérez-Grande

E. Sanchis Kilders, M. Balaguer Jiménez, L. R.Bellot Rubio, D. Calchetti, M. Carmona, W. Deutsch, A. Feller, G. Fernandez-Rico, A. Fernández-Medina, P. García Parejo, J. L.Gasent Blesa, L. Gizon, B. Grauf, K. Heerlein, A. Korpi-Lagg, A. López Jiménez, T. Maue, R. Meller, A. Moreno Vacas, R. Müller, E. Nakai, W. Schmidt, J. Sinjan, J. Staub, H. Strecker, I. Torralbo, G. Valori

^*Tämän työn vastaava kirjoittaja

Ei julkaistu Aalto-yliopiston affiliaatiolla

Max Planck Inst Solar Syst Res, Max Planck Society
CSIC - Institute of Astrophysics of Andalusia
CNRS- Université Paris-Saclay
Instituto Nacional de Técnica Aeroespacial Esteban Terradas
Universidad de Valencia
Leibniz Institut für Sonnenphysik
Technical University of Braunschweig
Technical University of Madrid
University of Barcelona
University of Göttingen

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

3 Viittaukset (Web of Science)

Abstrakti

In order to make accurate inferences about the solar interior using helioseismology, it is essential to understand all the relevant physical effects on the observations. One effect to understand is the (complex-valued) ratio of the horizontal to vertical displacement of the p- and f-modes at the height at which they are observed. Unfortunately, it is impossible to measure this ratio directly from a single vantage point, and it has been difficult to disentangle observationally from other effects. In this paper we attempt to measure the ratio directly using 7.5 h of simultaneous observations from the Polarimetric and Helioseismic Imager on board Solar Orbiter and the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. While image geometry problems make it difficult to determine the exact ratio, it appears to agree well with that expected from adiabatic oscillations in a standard solar model. On the other hand it does not agree with a commonly used approximation, indicating that this approximation should not be used in helioseismic analyses. In addition, the ratio appears to be real-valued.

Alkuperäiskieli	Englanti
Artikkeli	A84
Julkaisu	Astronomy & Astrophysics
Vuosikerta	673
DOI - pysyväislinkit	https://doi.org/10.1051/0004-6361/202345946
Tila	Julkaistu - 1 toukok. 2023
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Rahoitus

The authors would like to thank Aaron Birch for useful discussions and Damien Fournier for assistance with the eigenfunctions. Solar Orbiter is a space mission of international collaboration between ESA and NASA, operated by ESA. We are grateful to the ESA SOC and MOC teams for their support. The German contribution to SO/PHI is funded by the BMWi through DLR and by MPG central funds. The Spanish contribution is funded by AEI/MCIN/10.13039/501100011033/ (RTI2018-096886-C5, PID2021-125325OB-C5, PCI2022-135009-2) and ERDF A way of making Europe; Center of Excellence Severo Ochoa awards to IAA-CSIC (SEV-2017-0709, CEX2021-001131-S); and a Ramo n y Cajal fellowship awarded to DOS. The French contribution is funded by CNES. The HMI data are courtesy of NASA/SDO and the HMI science team. The data were processed at the German Data Center for SDO (GDC-SDO), funded by the German Aerospace Center (DLR) The authors would like to thank Aaron Birch for useful discussions and Damien Fournier for assistance with the eigenfunctions. Solar Orbiter is a space mission of international collaboration between ESA and NASA, operated by ESA. We are grateful to the ESA SOC and MOC teams for their support. The German contribution to SO/PHI is funded by the BMWi through DLR and by MPG central funds. The Spanish contribution is funded by AEI/MCIN/10.13039/501100011033/ (RTI2018-096886-C5, PID2021-125325OB-C5, PCI2022-135009-2) and ERDF “A way of making Europe”; “Center of Excellence Severo Ochoa” awards to IAA-CSIC (SEV-2017-0709, CEX2021-001131-S); and a Ramó n y Cajal fellowship awarded to DOS. The French contribution is funded by CNES. The HMI data are courtesy of NASA/SDO and the HMI science team. The data were processed at the German Data Center for SDO (GDC-SDO), funded by the German Aerospace Center (DLR).

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10.1051/0004-6361/202345946

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Schou, J., Hirzberger, J., Suárez, D. O., Albert, K., Jorge, N. A., Appourchaux, T., Alvarez-Herrero, A., Rodríguez, J. B., Gandorfer, A., Germerott, D., Guerrero, L., Gutierrez-Marques, P., Kahil, F., Kolleck, M., Solanki, S. K., Iniesta, J. C. D. T., Volkmer, R., Woch, J., Fiethe, B., ... Valori, G. (2023). The ratio of horizontal to vertical displacement in solar oscillations estimated from combined SO/PHI and SDO/HMI observations. Astronomy & Astrophysics, 673, Artikkeli A84. https://doi.org/10.1051/0004-6361/202345946

@article{d0a0680e35a34cdfac6b65564c4c2a4a,

title = "The ratio of horizontal to vertical displacement in solar oscillations estimated from combined SO/PHI and SDO/HMI observations",

abstract = "In order to make accurate inferences about the solar interior using helioseismology, it is essential to understand all the relevant physical effects on the observations. One effect to understand is the (complex-valued) ratio of the horizontal to vertical displacement of the p- and f-modes at the height at which they are observed. Unfortunately, it is impossible to measure this ratio directly from a single vantage point, and it has been difficult to disentangle observationally from other effects. In this paper we attempt to measure the ratio directly using 7.5 h of simultaneous observations from the Polarimetric and Helioseismic Imager on board Solar Orbiter and the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. While image geometry problems make it difficult to determine the exact ratio, it appears to agree well with that expected from adiabatic oscillations in a standard solar model. On the other hand it does not agree with a commonly used approximation, indicating that this approximation should not be used in helioseismic analyses. In addition, the ratio appears to be real-valued.",

keywords = "Sun: helioseismology, Sun: photosphere",

author = "J. Schou and J. Hirzberger and Su{\'a}rez, \{D. Orozco\} and K. Albert and Jorge, \{N. Albelo\} and T. Appourchaux and A. Alvarez-Herrero and Rodr{\'i}guez, \{J. Blanco\} and A. Gandorfer and D. Germerott and L. Guerrero and P. Gutierrez-Marques and F. Kahil and M. Kolleck and Solanki, \{S. K.\} and Iniesta, \{J. C.Del Toro\} and R. Volkmer and J. Woch and B. Fiethe and I. P{\'e}rez-Grande and Kilders, \{E. Sanchis\} and Jim{\'e}nez, \{M. Balaguer\} and Rubio, \{L. R.Bellot\} and D. Calchetti and M. Carmona and W. Deutsch and A. Feller and G. Fernandez-Rico and A. Fern{\'a}ndez-Medina and Parejo, \{P. Garc{\'i}a\} and Blesa, \{J. L.Gasent\} and L. Gizon and B. Grauf and K. Heerlein and A. Korpi-Lagg and \{L{\'o}pez Jim{\'e}nez\}, A. and T. Maue and R. Meller and Vacas, \{A. Moreno\} and R. M{\"u}ller and E. Nakai and W. Schmidt and J. Sinjan and J. Staub and H. Strecker and I. Torralbo and G. Valori",

note = "Funding Information: The authors would like to thank Aaron Birch for useful discussions and Damien Fournier for assistance with the eigenfunctions. Solar Orbiter is a space mission of international collaboration between ESA and NASA, operated by ESA. We are grateful to the ESA SOC and MOC teams for their support. The German contribution to SO/PHI is funded by the BMWi through DLR and by MPG central funds. The Spanish contribution is funded by AEI/MCIN/10.13039/501100011033/ (RTI2018-096886-C5, PID2021-125325OB-C5, PCI2022-135009-2) and ERDF A way of making Europe; Center of Excellence Severo Ochoa awards to IAA-CSIC (SEV-2017-0709, CEX2021-001131-S); and a Ramo n y Cajal fellowship awarded to DOS. The French contribution is funded by CNES. The HMI data are courtesy of NASA/SDO and the HMI science team. The data were processed at the German Data Center for SDO (GDC-SDO), funded by the German Aerospace Center (DLR) Funding Information: The authors would like to thank Aaron Birch for useful discussions and Damien Fournier for assistance with the eigenfunctions. Solar Orbiter is a space mission of international collaboration between ESA and NASA, operated by ESA. We are grateful to the ESA SOC and MOC teams for their support. The German contribution to SO/PHI is funded by the BMWi through DLR and by MPG central funds. The Spanish contribution is funded by AEI/MCIN/10.13039/501100011033/ (RTI2018-096886-C5, PID2021-125325OB-C5, PCI2022-135009-2) and ERDF {\textquotedblleft}A way of making Europe{\textquotedblright}; {\textquotedblleft}Center of Excellence Severo Ochoa{\textquotedblright} awards to IAA-CSIC (SEV-2017-0709, CEX2021-001131-S); and a Ram{\'o} n y Cajal fellowship awarded to DOS. The French contribution is funded by CNES. The HMI data are courtesy of NASA/SDO and the HMI science team. The data were processed at the German Data Center for SDO (GDC-SDO), funded by the German Aerospace Center (DLR). Publisher Copyright: {\textcopyright} The Authors 2023.",

year = "2023",

month = may,

day = "1",

doi = "10.1051/0004-6361/202345946",

language = "English",

volume = "673",

journal = "Astronomy \& Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Schou, J, Hirzberger, J, Suárez, DO, Albert, K, Jorge, NA, Appourchaux, T, Alvarez-Herrero, A, Rodríguez, JB, Gandorfer, A, Germerott, D, Guerrero, L, Gutierrez-Marques, P, Kahil, F, Kolleck, M, Solanki, SK, Iniesta, JCDT, Volkmer, R, Woch, J, Fiethe, B, Pérez-Grande, I, Kilders, ES, Jiménez, MB, Rubio, LRB, Calchetti, D, Carmona, M, Deutsch, W, Feller, A, Fernandez-Rico, G, Fernández-Medina, A, Parejo, PG, Blesa, JLG, Gizon, L, Grauf, B, Heerlein, K, Korpi-Lagg, A, López Jiménez, A, Maue, T, Meller, R, Vacas, AM, Müller, R, Nakai, E, Schmidt, W, Sinjan, J, Staub, J, Strecker, H, Torralbo, I & Valori, G 2023, 'The ratio of horizontal to vertical displacement in solar oscillations estimated from combined SO/PHI and SDO/HMI observations', Astronomy & Astrophysics, Vuosikerta 673, A84. https://doi.org/10.1051/0004-6361/202345946

TY - JOUR

T1 - The ratio of horizontal to vertical displacement in solar oscillations estimated from combined SO/PHI and SDO/HMI observations

AU - Schou, J.

AU - Hirzberger, J.

AU - Suárez, D. Orozco

AU - Albert, K.

AU - Jorge, N. Albelo

AU - Appourchaux, T.

AU - Alvarez-Herrero, A.

AU - Rodríguez, J. Blanco

AU - Gandorfer, A.

AU - Germerott, D.

AU - Guerrero, L.

AU - Gutierrez-Marques, P.

AU - Kahil, F.

AU - Kolleck, M.

AU - Solanki, S. K.

AU - Iniesta, J. C.Del Toro

AU - Volkmer, R.

AU - Woch, J.

AU - Fiethe, B.

AU - Pérez-Grande, I.

AU - Kilders, E. Sanchis

AU - Jiménez, M. Balaguer

AU - Rubio, L. R.Bellot

AU - Calchetti, D.

AU - Carmona, M.

AU - Deutsch, W.

AU - Feller, A.

AU - Fernandez-Rico, G.

AU - Fernández-Medina, A.

AU - Parejo, P. García

AU - Blesa, J. L.Gasent

AU - Gizon, L.

AU - Grauf, B.

AU - Heerlein, K.

AU - Korpi-Lagg, A.

AU - López Jiménez, A.

AU - Maue, T.

AU - Meller, R.

AU - Vacas, A. Moreno

AU - Müller, R.

AU - Nakai, E.

AU - Schmidt, W.

AU - Sinjan, J.

AU - Staub, J.

AU - Strecker, H.

AU - Torralbo, I.

AU - Valori, G.

N1 - Funding Information: The authors would like to thank Aaron Birch for useful discussions and Damien Fournier for assistance with the eigenfunctions. Solar Orbiter is a space mission of international collaboration between ESA and NASA, operated by ESA. We are grateful to the ESA SOC and MOC teams for their support. The German contribution to SO/PHI is funded by the BMWi through DLR and by MPG central funds. The Spanish contribution is funded by AEI/MCIN/10.13039/501100011033/ (RTI2018-096886-C5, PID2021-125325OB-C5, PCI2022-135009-2) and ERDF A way of making Europe; Center of Excellence Severo Ochoa awards to IAA-CSIC (SEV-2017-0709, CEX2021-001131-S); and a Ramo n y Cajal fellowship awarded to DOS. The French contribution is funded by CNES. The HMI data are courtesy of NASA/SDO and the HMI science team. The data were processed at the German Data Center for SDO (GDC-SDO), funded by the German Aerospace Center (DLR) Funding Information: The authors would like to thank Aaron Birch for useful discussions and Damien Fournier for assistance with the eigenfunctions. Solar Orbiter is a space mission of international collaboration between ESA and NASA, operated by ESA. We are grateful to the ESA SOC and MOC teams for their support. The German contribution to SO/PHI is funded by the BMWi through DLR and by MPG central funds. The Spanish contribution is funded by AEI/MCIN/10.13039/501100011033/ (RTI2018-096886-C5, PID2021-125325OB-C5, PCI2022-135009-2) and ERDF “A way of making Europe”; “Center of Excellence Severo Ochoa” awards to IAA-CSIC (SEV-2017-0709, CEX2021-001131-S); and a Ramó n y Cajal fellowship awarded to DOS. The French contribution is funded by CNES. The HMI data are courtesy of NASA/SDO and the HMI science team. The data were processed at the German Data Center for SDO (GDC-SDO), funded by the German Aerospace Center (DLR). Publisher Copyright: © The Authors 2023.

PY - 2023/5/1

Y1 - 2023/5/1

N2 - In order to make accurate inferences about the solar interior using helioseismology, it is essential to understand all the relevant physical effects on the observations. One effect to understand is the (complex-valued) ratio of the horizontal to vertical displacement of the p- and f-modes at the height at which they are observed. Unfortunately, it is impossible to measure this ratio directly from a single vantage point, and it has been difficult to disentangle observationally from other effects. In this paper we attempt to measure the ratio directly using 7.5 h of simultaneous observations from the Polarimetric and Helioseismic Imager on board Solar Orbiter and the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. While image geometry problems make it difficult to determine the exact ratio, it appears to agree well with that expected from adiabatic oscillations in a standard solar model. On the other hand it does not agree with a commonly used approximation, indicating that this approximation should not be used in helioseismic analyses. In addition, the ratio appears to be real-valued.

AB - In order to make accurate inferences about the solar interior using helioseismology, it is essential to understand all the relevant physical effects on the observations. One effect to understand is the (complex-valued) ratio of the horizontal to vertical displacement of the p- and f-modes at the height at which they are observed. Unfortunately, it is impossible to measure this ratio directly from a single vantage point, and it has been difficult to disentangle observationally from other effects. In this paper we attempt to measure the ratio directly using 7.5 h of simultaneous observations from the Polarimetric and Helioseismic Imager on board Solar Orbiter and the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. While image geometry problems make it difficult to determine the exact ratio, it appears to agree well with that expected from adiabatic oscillations in a standard solar model. On the other hand it does not agree with a commonly used approximation, indicating that this approximation should not be used in helioseismic analyses. In addition, the ratio appears to be real-valued.

KW - Sun: helioseismology

KW - Sun: photosphere

UR - https://www.scopus.com/pages/publications/85160405163

U2 - 10.1051/0004-6361/202345946

DO - 10.1051/0004-6361/202345946

M3 - Article

AN - SCOPUS:85160405163

SN - 0004-6361

VL - 673

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

M1 - A84

ER -

The ratio of horizontal to vertical displacement in solar oscillations estimated from combined SO/PHI and SDO/HMI observations

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