Velocity-intensity asymmetry reversal of solar radial p-modes
The development of space-borne missions has significantly improved the quality of the measured spectra of solar-like oscillators. Their p-mode line profiles can now be resolved, and the asymmetries inferred for a variety of stars other than the Sun. However, it has been known for a long time that th...
Gespeichert in:
| Hauptverfasser: | , , , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
16 December 2020
|
| In: |
Astronomy and astrophysics
Year: 2020, Jahrgang: 644, Pages: 1-8 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/202038222 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/202038222 Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2020/12/aa38222-20/aa38222-20.html 
|
| Verfasserangaben: | J. Philidet, K. Belkacem, H.-G. Ludwig, R. Samadi, and C. Barban |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1789047862 | ||
| 003 | DE-627 | ||
| 005 | 20220820124405.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 220209s2020 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1051/0004-6361/202038222 |2 doi | |
| 035 | |a (DE-627)1789047862 | ||
| 035 | |a (DE-599)KXP1789047862 | ||
| 035 | |a (OCoLC)1341441487 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Philidet, Jordan |e VerfasserIn |0 (DE-588)1209136988 |0 (DE-627)1696283787 |4 aut | |
| 245 | 1 | 0 | |a Velocity-intensity asymmetry reversal of solar radial p-modes |c J. Philidet, K. Belkacem, H.-G. Ludwig, R. Samadi, and C. Barban |
| 264 | 1 | |c 16 December 2020 | |
| 300 | |a 8 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 02.03.2022 | ||
| 520 | |a The development of space-borne missions has significantly improved the quality of the measured spectra of solar-like oscillators. Their p-mode line profiles can now be resolved, and the asymmetries inferred for a variety of stars other than the Sun. However, it has been known for a long time that the asymmetries of solar <i>p<i/>-modes are reversed between the velocity and the intensity spectra. Understanding the origin of this reversal is necessary in order to use asymmetries as a tool for seismic diagnosis. For stars other than the Sun, only the intensity power spectrum is sufficiently resolved to allow for an estimation of mode asymmetries. We recently developed an approach designed to model and predict these asymmetries in the velocity power spectrum of the Sun and to successfully compare them to their observationally derived counterpart. In this paper we expand our model and predict the asymmetries featured in the intensity power spectrum. We find that the shape of the mode line profiles in intensity is largely dependent on how the oscillation-induced variations of the radiative flux are treated, and that modelling it realistically is crucial to understanding asymmetry reversal. Perturbing a solar-calibrated grey atmosphere model, and adopting the quasi-adiabatic framework as a first step, we reproduce the asymmetries observed in the solar intensity spectrum for low-frequency modes. We conclude that, unlike previously thought, it is not necessary to invoke an additional mechanism (e.g. non-adiabatic effects, coherent non-resonant background signal) to explain asymmetry reversal. This additional mechanism is necessary, however, to explain asymmetry reversal for higher-order modes. | ||
| 700 | 1 | |a Belkacem, Kévin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ludwig, Hans-Günter |d 1962- |e VerfasserIn |0 (DE-588)120980568 |0 (DE-627)705135152 |0 (DE-576)292479476 |4 aut | |
| 700 | 1 | |a Samadi, Réza |e VerfasserIn |4 aut | |
| 700 | 1 | |a Barban, Caroline |e VerfasserIn |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Astronomy and astrophysics |d Les Ulis : EDP Sciences, 1969 |g 644(2020) vom: Dez., Artikel-ID A171, Seite 1-8 |h Online-Ressource |w (DE-627)253390222 |w (DE-600)1458466-9 |w (DE-576)072283351 |x 1432-0746 |7 nnas |a Velocity-intensity asymmetry reversal of solar radial p-modes |
| 773 | 1 | 8 | |g volume:644 |g year:2020 |g month:12 |g elocationid:A171 |g pages:1-8 |g extent:8 |a Velocity-intensity asymmetry reversal of solar radial p-modes |
| 856 | 4 | 0 | |u https://doi.org/10.1051/0004-6361/202038222 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 856 | 4 | 0 | |u https://www.aanda.org/articles/aa/abs/2020/12/aa38222-20/aa38222-20.html |x Verlag |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20220209 | ||
| 993 | |a Article | ||
| 994 | |a 2020 | ||
| 998 | |g 120980568 |a Ludwig, Hans-Günter |m 120980568:Ludwig, Hans-Günter |d 700000 |d 714000 |d 714300 |e 700000PL120980568 |e 714000PL120980568 |e 714300PL120980568 |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714300/ |p 3 | ||
| 999 | |a KXP-PPN1789047862 |e 4054566987 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"id":{"eki":["1789047862"],"doi":["10.1051/0004-6361/202038222"]},"title":[{"title_sort":"Velocity-intensity asymmetry reversal of solar radial p-modes","title":"Velocity-intensity asymmetry reversal of solar radial p-modes"}],"recId":"1789047862","note":["Gesehen am 02.03.2022"],"physDesc":[{"extent":"8 S."}],"person":[{"family":"Philidet","roleDisplay":"VerfasserIn","role":"aut","display":"Philidet, Jordan","given":"Jordan"},{"given":"Kévin","role":"aut","display":"Belkacem, Kévin","roleDisplay":"VerfasserIn","family":"Belkacem"},{"family":"Ludwig","roleDisplay":"VerfasserIn","display":"Ludwig, Hans-Günter","role":"aut","given":"Hans-Günter"},{"roleDisplay":"VerfasserIn","family":"Samadi","display":"Samadi, Réza","role":"aut","given":"Réza"},{"roleDisplay":"VerfasserIn","family":"Barban","given":"Caroline","role":"aut","display":"Barban, Caroline"}],"name":{"displayForm":["J. Philidet, K. Belkacem, H.-G. Ludwig, R. Samadi, and C. Barban"]},"relHost":[{"id":{"zdb":["1458466-9"],"eki":["253390222"],"issn":["1432-0746"]},"title":[{"title_sort":"Astronomy and astrophysics","title":"Astronomy and astrophysics","subtitle":"an international weekly journal"}],"note":["Gesehen am 21.06.2024","Erscheint 36mal jährlich in 12 Bänden zu je 3 Ausgaben","Fortsetzung der Druck-Ausgabe"],"disp":"Velocity-intensity asymmetry reversal of solar radial p-modesAstronomy and astrophysics","origin":[{"dateIssuedKey":"1969","publisherPlace":"Les Ulis ; Berlin ; Heidelberg","dateIssuedDisp":"1969-","publisher":"EDP Sciences ; Springer"}],"type":{"media":"Online-Ressource","bibl":"periodical"},"language":["eng"],"physDesc":[{"extent":"Online-Ressource"}],"name":{"displayForm":["European Southern Observatory (ESO)"]},"part":{"pages":"1-8","year":"2020","extent":"8","volume":"644","text":"644(2020) vom: Dez., Artikel-ID A171, Seite 1-8"},"recId":"253390222","pubHistory":["1.1969 -"],"titleAlt":[{"title":"Astronomy & astrophysics"},{"title":"a European journal"}],"corporate":[{"roleDisplay":"Herausgebendes Organ","display":"European Southern Observatory","role":"isb"}]}],"language":["eng"],"type":{"media":"Online-Ressource","bibl":"article-journal"},"origin":[{"dateIssuedDisp":"16 December 2020","dateIssuedKey":"2020"}]} | ||
| SRT | |a PHILIDETJOVELOCITYIN1620 | ||