標(biāo)題: Titlebook: Helioseismology, Asteroseismology, and MHD Connections; Laurent Gizon,Paul Cally,John Leibacher Book 2008 Springer-Verlag New York 2008 GO [打印本頁] 作者: 稀少 時間: 2025-3-21 18:19
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作者: 禍害隱伏 時間: 2025-3-21 21:32
Book 2008 SDO/HMI and the CoRoT space mission?is yielding its first long-duration light curves of thousands of stars. The articles and topics in this book?are?inspired by two seminal conferences, HELAS II and SOHO19/GONG 2007,?but contributions from other?experts?have been commissioned as well. For example, 作者: 含糊其辭 時間: 2025-3-22 01:33
Book 2008ide a framework for the other contributions and together they form a complete description of our understanding of pressure waves in the Sun and other stars...This volume is aimed at?solar physicists?and astronomers specializing in helio- and asteroseismology..作者: 鎮(zhèn)痛劑 時間: 2025-3-22 06:06 作者: 切割 時間: 2025-3-22 09:58 作者: armistice 時間: 2025-3-22 14:11 作者: Tartar 時間: 2025-3-22 18:18 作者: sorbitol 時間: 2025-3-22 22:11
Recent Developments in Local Helioseismology, observational and theoretical concerns regarding the adequacy of current analyses of waves in sunspots and active regions, and we report on recent progress in the use of numerical simulations to test local helioseismic methods.作者: 爭吵加 時間: 2025-3-23 01:34
logical step forward.Offers a unique perspective on the effe.This volume presents a timely snapshot of the state of helio- and asteroseismology in the era when the SOHO/MDI instrument is about to be replaced by SDO/HMI and the CoRoT space mission?is yielding its first long-duration light curves of t作者: Musket 時間: 2025-3-23 07:08
ittelbar einleuchtend. Und als dann zu Anfang unseres Jahrhunderts der abstrakte metrische Raum auftrat, gab es auch da keine Schwierigkeiten: Anstelle des Abstands . zweier reeller Zahlen trat der Abstand .(.) zweier Punkte des metrischen Raumes.作者: 金盤是高原 時間: 2025-3-23 11:06
,Angular Momentum Transport in the Sun’s Radiative Zone by Gravito-Inertial Waves,n zones under conditions that are given. We present the modified transport equations and their numerical evaluation in a parameter range that is significant for the Sun. Consequences for the transport of angular momentum inside solar and stellar radiative regions are discussed.作者: ANTH 時間: 2025-3-23 16:35
Observation and Modeling of the Solar-Cycle Variation of the Meridional Flow,e loss in the active region belt (the only existing quantitative model). We find that the model and the data are in qualitative agreement, although the amplitude of the solar-cycle variation of the meridional flow at 60?Mm is underestimated by the model.作者: 去掉 時間: 2025-3-23 20:35 作者: 橡子 時間: 2025-3-24 01:49
,The Solar-Stellar Connection: Magneto-Acoustic Pulsations in 1.5, , – 2, , Peculiar A Stars, Sun. Yet the Sun is but one star, so stellar astronomy is of great interest to solar astronomers for its range of different conditions under which to test theoretical understanding gained from the study of the Sun. The rapidly oscillating peculiar A stars are of particular interest to solar astrono作者: JEER 時間: 2025-3-24 03:34
Fourier Analysis of Gapped Time Series: Improved Estimates of Solar and Stellar Oscillation Parametof stellar oscillation. The precision of these measurements depends on the total length (.), quality, and completeness of the observations. Except in a few simple cases, the effect of gaps in the data on measurement precision is poorly understood, in particular in Fourier space where the convolution作者: pacifist 時間: 2025-3-24 10:02
Perspectives in Global Helioseismology and the Road Ahead,allenges the field faces as it enters a fourth decade of science exploitation. We do so with an eye on the past, looking at the perspectives global helioseismology offered in its earlier phases, in particular the mid-to-late 1970s and the 1980s. We look at how modern, higher quality, longer datasets作者: 無能力之人 時間: 2025-3-24 14:03
Meridional Circulation and Global Solar Oscillations, Ritzwoller (.., 431, .). As an input flow we use various models of stationary meridional circulation obeying the continuity equation. This flow perturbs the eigenmodes of an equilibrium model of the Sun. We derive the signatures of the meridional circulation in the frequency multiplets of solar . m作者: Carcinogen 時間: 2025-3-24 16:49
,Global Effects of Local Sound-Speed Perturbations in?the?Sun: A?Theoretical Study,mulations of the solar acoustic wave field. Extending the method of realization-noise subtraction (., Hanasoge, Duvall, and Couvidat, .., 1234, .) to global modes and exploiting the luxury of full spherical coverage, we are able to achieve very highly resolved frequency differences that are then use作者: ABASH 時間: 2025-3-24 20:57
,Angular Momentum Transport in the Sun’s Radiative Zone by Gravito-Inertial Waves,nt in understanding the evolution of stellar rotation and can explain the Sun’s quasi-flat internal-rotation profile. Because the Sun’s rotation frequency is of the same order as that of the waves, it is now necessary to refine our description of wave propagation and to take into account the action 作者: Genome 時間: 2025-3-25 01:18 作者: micronized 時間: 2025-3-25 07:20
,Can We Constrain Solar Interior Physics by Studying the?Gravity-Mode Asymptotic Signature?,umed that high-frequency . modes give information about the structure of the solar interior whereas low-frequency . modes are more sensitive to the solar dynamics (the internal rotation). In this work, we develop a new methodology, based on the analysis of the almost constant separation of the dipol作者: Observe 時間: 2025-3-25 11:19 作者: alabaster 時間: 2025-3-25 12:25
Acoustic Radius Measurements from MDI and GONG,nal to the solar acoustic radius. We analyze the ACF of MDI and GONG spherical-harmonic-coefficient time series for degrees .=0?3. Acoustic radius measurements obtained from the first dominant peak locations of the ACF show a significant anticorrelation with solar cycle. This technique can be a usef作者: 寡頭政治 時間: 2025-3-25 17:27
Spatio-Temporal Analysis of Photospheric Turbulent Velocity Fields Using the Proper Orthogonal Decods computed from high-resolution data coming from the SOHO/MDI instrument. Using this technique, we are able to identify and characterize the different dynamical regimes acting in the system. All of the POD modes are characterized by two well-separated peaks in the frequency spectra. In particular, 作者: 違法事實(shí) 時間: 2025-3-25 20:57 作者: 捐助 時間: 2025-3-26 03:40 作者: 浪蕩子 時間: 2025-3-26 04:28
,Analysis of MDI High-Degree Mode Frequencies and?their Rotational Splittings,by applying spherical harmonic decomposition to full-disk solar images observed by the Michelson Doppler Imager onboard the . spacecraft. Global helioseismology analysis of high-degree modes is complicated by the fact that the individual modes cannot be isolated, which has limited so far the use of 作者: engender 時間: 2025-3-26 11:36
Recent Developments in Local Helioseismology,ructures and dynamics in the quiet Sun and active regions. In this short review we focus on recent developments, and in particular on a number of current issues, including the sensitivity of different measures of travel time and testing the forward modelling used in local helioseismology. We discuss作者: 增長 時間: 2025-3-26 15:54 作者: antecedence 時間: 2025-3-26 20:37
,Three-Dimensional MHD Wave Propagation and Conversion to Alfvén Waves near the Solar Surface. I. Ditechniques, including ray theory, perturbation theory, differential eigensystem analysis, and direct numerical simulation. These show that significant energy may be transferred between the fast and slow modes in the neighbourhood of the equipartition layer where the Alfvén and sound speeds coincide.作者: Communicate 時間: 2025-3-26 22:13 作者: 緩解 時間: 2025-3-27 03:52 作者: 一加就噴出 時間: 2025-3-27 08:27 作者: neuron 時間: 2025-3-27 09:50 作者: 奇思怪想 時間: 2025-3-27 16:21 作者: jovial 時間: 2025-3-27 21:02
S. Mathis,S. Talon,F.-P. Pantillon,J.-P. Zahnkeit interpretieren. Weiter betrachten wir ein von den Vektoren . aufgespanntes Parallelogramm . (siehe die Fig. 291.1). Die Flüssigkeit, die pro Zeiteinheit in der einen oder in der anderen Richtung durch das Parallelogramm str?mt, füllt gerade das von den Vektoren . und K aufgespannte Parallelepip作者: Contracture 時間: 2025-3-28 00:05 作者: Ballerina 時間: 2025-3-28 03:59
S. Kholikov,F. Hilln R?umen. Dabei lassen wir uns von elementargeometrischen Tatsachen leiten. Insbesondere wollen wir Intervallen ihre L?nge, Rechtecken ihren durch ?L?nge mal Breite“ bestimmten Fl?cheninhalt und Quadern ihr durch ?L?nge mal Breite mal H?he“ berechnetes Volumen zuordnen.作者: 罐里有戒指 時間: 2025-3-28 07:01 作者: Tempor 時間: 2025-3-28 12:57 作者: LIEN 時間: 2025-3-28 18:18
M. J. Thompson,S. Zharkovn. Den eindimensionalen Fall haben wir in Kapitel 10 eingehend behandelt. Aufgrund der S?tze . und . kann man z.B. folgendes sagen: Ist die Funktion .:].[→ ? stetig differenzierbar und ist .(t.)=?0, so ist . in einer ganzen Umgebung . von . streng monoton, besitzt somit in . eine Umkehrfunktion . un作者: idiopathic 時間: 2025-3-28 21:51
D. C. Braun,A. C. Birchtics skillfully with didactical and historical consideration.Volume III sets out classical Cauchy theory. It is much more geared towards its innumerable applications than towards a more or less complete theory of analytic functions. Cauchy-type curvilinear integrals are then shown to generalize to a作者: 書法 時間: 2025-3-29 00:25 作者: exophthalmos 時間: 2025-3-29 06:49 作者: 發(fā)電機(jī) 時間: 2025-3-29 08:50
,Global Effects of Local Sound-Speed Perturbations in?the?Sun: A?Theoretical Study,ugh comparisons with error estimates obtained from Michelson Doppler Imager (MDI; Scherrer ., .., 129, .) observations, we find that the frequency differences are detectable with a sufficiently long time series (70?–?642?days).作者: 攝取 時間: 2025-3-29 11:26
Influence of Low-Degree High-Order ,-Mode Splittings on the Solar Rotation Profile, velocities measured with the GOLF instrument. We carried out a theoretical study of the influence of the low-degree modes in the region from 2 to 3.5?mHz on the inferred rotation profile as a function of their error bars.作者: Hemodialysis 時間: 2025-3-29 19:31 作者: CRUMB 時間: 2025-3-29 23:13 作者: membrane 時間: 2025-3-30 02:01
Uncovering the Bias in Low-Degree ,-Mode Linewidth Fitting,scatter to increase the sample standard deviation per 40-second measurement. In all cases, the observational duration required to accurately obtain width estimates increases beyond that required for sufficient spectral resolution below a certain threshold frequency. For modes at ≈?1500?μHz, with an 作者: sphincter 時間: 2025-3-30 04:15
,Analysis of MDI High-Degree Mode Frequencies and?their Rotational Splittings,a correction to the Carrington elements. We also present variations of the mode frequencies caused by the solar activity cycle. We have analyzed seven observational periods from 1999 to 2005 and correlated their frequency shift with four different solar indices. The frequency shift scaled by the rel作者: 步兵 時間: 2025-3-30 09:43 作者: Blood-Clot 時間: 2025-3-30 12:37
,Surface-Focused Seismic Holography of Sunspots: I.?Observations,r exclusively in waves observed with phase-speed filters that are dominated by power in the low-frequency wing of the .. ridge. We assess the ratio of incoming to outgoing .-mode power using the ridge filters and compare surface-focused holography measurements with the results of earlier published .作者: PET-scan 時間: 2025-3-30 17:54
of our understanding of pressure waves in the Sun and other stars...This volume is aimed at?solar physicists?and astronomers specializing in helio- and asteroseismology..978-1-4419-2796-5978-0-387-89482-9作者: 諄諄教誨 時間: 2025-3-30 21:24 作者: 南極 時間: 2025-3-31 01:19
Helioseismology, Asteroseismology, and MHD Connections作者: Pageant 時間: 2025-3-31 07:51 作者: 樂器演奏者 時間: 2025-3-31 11:17
978-1-4419-2796-5Springer-Verlag New York 2008作者: 厚臉皮 時間: 2025-3-31 14:07 作者: 離開就切除 時間: 2025-3-31 20:31 作者: 容易懂得 時間: 2025-4-1 00:25
M. Roth,M. StixIn Definition 6.1.5 we defined what it meant for a sequence . of real numbers to converge to another real number .; indeed, this meant that for every .?>?0, there exists an .?≥?. such that|.???..|?≤?. for all .?≥?.. When this is the case, we write lim.?..?=?..作者: 妨礙議事 時間: 2025-4-1 03:22
R. A. García,S. Mathur,J. Ballot,A. Eff-Darwich,S. J. Jiménez-Reyes,S. G. KorzennikIn den Kapiteln 10 –13 ist die Infinitesimalrechnung für reellwertige Funktionen einer reellen Variablen entwickelt worden. Zahlreiche der dort erhaltenen S?tze und Rechenregeln gelten aber auch für komplexwertige Funktionen einer reellen Variablen. Dies wird im folgenden ben?tigt und soll hier n?her ausgeführt werden.作者: 繁榮中國 時間: 2025-4-1 08:14
R. A. García,S. Mathur,J. BallotEs ist eine Besonderheit des ?., da? hier neben dem Skalarprodukt eine weitere multiplikative Verknüpfung der Vektoren zur Verfügung steht. Dieses sogenannte Vektorprodukt l??t sich folgenderma?en erkl?ren.作者: affluent 時間: 2025-4-1 13:21
A. Vecchio,V. Carbone,F. Lepreti,L. Primavera,L. Sorriso-Valvo,T. Straus,P. VeltriNachdem wir im letzten Kapitel die Grundlagen der Ma?thheorie kennengelernt haben, wenden wir uns nun der Integrationstheorie zu. Im ersten Teil studieren wir Integrale über allgemeinen Ma?r?umen, w?hrend wir in der zweiten H?lfte die speziellen Eigenschaften des Lebesgueschen Ma?es ausnutzen.作者: 別名 時間: 2025-4-1 15:49
C. Nutto,M. Roth,Y. Zhugzhda,J. Bruls,O. von?der LüheIn the first two chapters of this book, we developed the basics of measure and integration theory, and, in the third, we deepened our knowledge of manifolds and introduced the theory of differential forms. We are now ready to extend integration theory to manifolds, which means we will be able to integrate over “curved spaces”.作者: 進(jìn)入 時間: 2025-4-1 19:29
Laurent Gizon,Matthias RempelDas Folgende ist der Konstruktion in Abschnitt 274 nachgebildet. — Wir betrachten ein im Punkt .∈ ?. differenzierbares Vektorfeld . sowie ein ?kleines“, von den Vektoren ., ., . aufgespanntes Parallelepiped . mit Zentrum . (siehe die Fig. 301.1); dabei sei作者: Cuisine 時間: 2025-4-1 23:24
