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Analysing greenhouse gas emissions of an astronomical institute is a first step in reducing its environmental impact. Here, we break down the emissions of the Max Planck Institute for Astronomy in Heidelberg and propose measures for…

This paper introduces a method for aligning solar observations from different telescopes. We utilized helioprojective coordinates from the Solar Dynamics Observatory (SDO) as a reference to align images from ALMA and IRIS. The alignment is…

Solar and Stellar Astrophysics · Physics 2024-04-09 Francisco J. Ordoñez Araujo , Juan Camilo Guevara Gómez , Benjamín Calvo Mozo

Time-dependent three-dimensional magnetohydrodynamics (MHD) simulation modules are implemented at the Joint Science Operation Center (JSOC) of Solar Dynamics Observatory (SDO). The modules regularly produce three-dimensional data of the…

Solar and Stellar Astrophysics · Physics 2015-04-22 Keiji Hayashi , J. Todd Hoeksema , Yang Liu , Monica G. Bobra , Xudong D. Sun , Aimee A. Norton

Helioseismology is the branch of the Solar Physics which studies the solar global oscillations, a phenomenon very important in order to understand the inside of the Sun. We explain here a method for measuring the solar velocity fields along…

Astrophysics · Physics 2007-05-23 I. Formicola , A. Longobardo , C. Pinto , P. Cerulo

The {\em Solar Orbiter} is the next solar physics mission of the European Space Agency, ESA, in collaboration with NASA, with a launch planned in 2018. The spacecraft is designed to approach the Sun to within 0.28\,AU at perihelion of a…

Helioseismology has produced unprecedented measurements of the Sun's internal structure and dynamics over the past 25 years. Much of this work has been based on global helioseismology. Now local helioseismology too is showing its great…

Solar and Stellar Astrophysics · Physics 2010-03-23 M. J. Thompson

We present a dataset for investigating the impact of stellar activity on astrometric measurements using NASA's Solar Dynamics Observatory (SDO) images of the Sun. The sensitivity of astrometry for detecting exoplanets is limited by stellar…

Solar and Stellar Astrophysics · Physics 2023-10-20 Warit Wijitworasart , Zoe de Beurs , Andrew Vanderburg

This paper describes the Polarimetric and Helioseismic Imager on the Solar Orbiter mission (SO/PHI), the first magnetograph and helioseismology instrument to observe the Sun from outside the Sun-Earth line. It is the key instrument meant to…

Instrumentation and Methods for Astrophysics · Physics 2020-09-30 S. K. Solanki , J. C. del Toro Iniesta , J. Woch , A. Gandorfer , J. Hirzberger , A. Alvarez-Herrero , T. Appourchaux , V. Martínez Pillet , I. Pérez-Grande , E. Sanchis Kilders , W. Schmidt , J. M. Gómez Cama , H. Michalik , W. Deutsch , G. Fernandez-Rico , B. Grauf , L. Gizon , K. Heerlein , M. Kolleck , A. Lagg , R. Meller , R. Müller , U. Schühle , J. Staub , K. Albert , M. Alvarez Copano , U. Beckmann , J. Bischoff , D. Busse , R. Enge , S. Frahm , D. Germerott , L. Guerrero , B. Löptien , T. Meierdierks , D. Oberdorfer , I. Papagiannaki , S. Ramanath , J. Schou , S. Werner , D. Yang , A. Zerr , M. Bergmann , J. Bochmann , J. Heinrichs , S. Meyer , M. Monecke , M. -F. Müller , M. Sperling , D. Álvarez Garcí a , B. Aparicio , M. Balaguer Jiménez , L. R. Bellot Rubio , J. P. Cobos Carracosa , F. Girela , D. Hernández Expósito , M. Herranz , P. Labrousse , A. López Jiménez , D. Orozco Suárez , J. L. Ramos , J. Barandiarán , L. Bastide , C. Campuzano , M. Cebollero , B. Dávila , A. Fernández-Medina , P. García Parejo , D. Garranzo-García , H. Laguna , J. A. Martín , R. Navarro , A. Núñez Peral , M. Royo , A. Sánchez , M. Silva-López , I. Vera , J. Villanueva , J. -J. Fourmond , C. Ruiz de Galarreta , M. Bouzit , V. Hervier , J. C. Le Clec'h , N. Szwec , M. Chaigneau , V. Buttice , C. Dominguez-Tagle , A. Philippon , P. Boumier , R. Le Cocguen , G. Baranjuk , A. Bell , Th. Berkefeld , J. Baumgartner , F. Heidecke , T. Maue , E. Nakai , T. Scheiffelen , M. Sigwarth , D. Soltau , R. Volkmer , J. Blanco Rodríguez , V. Domingo , A. Ferreres Sabater , J. L. Gasent Blesa , P. Rodríguez Martínez , D. Osorno Caudel , J. Bosch , A. Casas , M. Carmona , A. Herms , D. Roma , G. Alonso , A. G\' omez-Sanjuan , J. Piqueras , I. Torralbo , B. Fiethe , Y. Guan , T. Lange , H. Michel , J. A. Bonet , S. Fahmy , D. Müller , I. Zouganelis

The Solar and Heliospheric Observatory (SOHO) was launched in December 1995 with a suite of instruments designed to answer long-standing questions about the Sun's internal structure, its extensive outer atmosphere, and the solar wind. This…

Astrophysics · Physics 2007-05-23 Steven R. Cranmer

The goal of helioseismology is to provide accurate information about the Sun's interior from the observations of the wave field at its surface. In the last three decades, both global and local helioseismology studies have made significant…

Solar Ring (SOR) is a proposed space science mission to monitor and study the Sun and inner heliosphere from a full 360{\deg} perspective in the ecliptic plane. It will deploy three 120{\deg}-separated spacecraft on the 1-AU orbit. The…

The Helioseismic and Magnetic Imager (HMI) has just started producing data that will help determine what the sources and mechanisms of variability in the Sun's interior are. The instrument measures the Doppler shift and the polarization of…

Solar and Stellar Astrophysics · Physics 2010-12-20 Rebecca Centeno , Steve Tomczyk , Juan Manuel Borrero , Sebastien Couvidat , Keiji Hayashi , Todd Hoeksema , Yang Liu , Jesper Schou

The solar observatory Einstein Tower (Einsteinturm) at the Telegrafenberg in Potsdam is both a landmark of modern architecture and an important place for solar physics. Originally built for high-resolution spectroscopy and measuring the…

A new instrument with a dual-beam H-alpha Doppler system is being developed at the Udaipur Solar Observatory (USO) in order to improve the quality and quantity of data on quiet, activated and erupting filaments and prominences on the Sun,…

Solar and Stellar Astrophysics · Physics 2015-08-24 Anand D. Joshi , Shibu K. Mathew , Nandita Srivastava , Sara F. Martin , Sudhir K. Gupta

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…

Solar and Stellar Astrophysics · Physics 2020-09-30 I. Zouganelis , A. De Groof , A. P. Walsh , D. R. Williams , D. Mueller , O. C. St Cyr , F. Auchere , D. Berghmans , A. Fludra , T. S. Horbury , R. A. Howard , S. Krucker , M. Maksimovic , C. J. Owen , J. Rodriiguez-Pacheco , M. Romoli , S. K. Solanki , C. Watson , L. Sanchez , J. Lefort , P. Osuna , H. R. Gilbert , T. Nieves-Chinchilla , L. Abbo , O. Alexandrova , A. Anastasiadis , V. Andretta , E. Antonucci , T. Appourchaux , A. Aran , C. N. Arge , G. Aulanier , D. Baker , S. D. Bale , M. Battaglia , L. Bellot Rubio , A. Bemporad , M. Berthomier , K. Bocchialini , X. Bonnin , A. S. Brun , R. Bruno , E. Buchlin , J. Buechner , R. Bucik , F. Carcaboso , R. Carr , I. Carrasco-Blazquez , B. Cecconi , I. Cernuda Cangas , C. H. K. Chen , L. P. Chitta , T. Chust , K. Dalmasse , R. D'Amicis , V. Da Deppo , R. De Marco , S. Dolei , L. Dolla , T. Dudok de Wit , L. van Driel-Gesztelyi , J. P. Eastwood , F. Espinosa Lara , L. Etesi , A. Fedorov , F. Felix-Redondo , S. Fineschi , B. Fleck , D. Fontaine , N. J. Fox , A. Gandorfer , V. Genot , M. K. Georgoulis , S. Gissot , A. Giunta , L. Gizon , R. Gomez-Herrero , C. Gontikakis , G. Graham , L. Green , T. Grundy , M. Haberreiter , L. K. Harra , D. M. Hassler , J. Hirzberger , G. C. Ho , G. Hurford , D. Innes , K. Issautier , A. W. James , N. Janitzek , M. Janvier , N. Jeffrey , J. Jenkins , Y. Khotyaintsev , K. -L. Klein , E. P. Kontar , I. Kontogiannis , C. Krafft , V. Krasnoselskikh , M. Kretzschmar , N. Labrosse , A. Lagg , F. Landini , B. Lavraud , I. Leon , S. T. Lepri , G. R. Lewis , P. Liewer , J. Linker , S. Livi , D. M. Long , P. Louarn , O. Malandraki , S. Maloney , V. Martinez-Pillet , M. Martinovic , A. Masson , S. Matthews , L. Matteini , N. Meyer-Vernet , K. Moraitis , R. J. Morton , S. Musset , G. Nicolaou , A. Nindos , H. O'Brien , D. Orozco Suarez , M. Owens , M. Pancrazzi , A. Papaioannou , S. Parenti , E. Pariat , S. Patsourakos , D. Perrone , H. Peter , R. F. Pinto , C. Plainaki , D. Plettemeier , S. P. Plunkett , J. M. Raines , N. Raouafi , H. Reid , A. Retino , L. Rezeau , P. Rochus , L. Rodriguez , L. Rodriguez-Garcia , M. Roth , A. P. Rouillard , F. Sahraoui , C. Sasso , J. Schou , U. Schuehle , L. Sorriso-Valvo , J. Soucek , D. Spadaro , M. Stangalini , D. Stansby , M. Steller , A. Strugarek , S. Stverak , R. Susino , D. Telloni , C. Terasa , L. Teriaca , S. Toledo-Redondo , J. C. del Toro Iniesta , G. Tsiropoula , A. Tsounis , K. Tziotziou , F. Valentini , A. Vaivads , A. Vecchio , M. Velli , C. Verbeeck , A. Verdini , D. Verscharen , N. Vilmer , A. Vourlidas , R. Wicks , R. F. Wimmer-Schweingruber , T. Wiegelmann , P. R. Young , A. N. Zhukov

The magnetic fields and dynamical processes in the solar polar regions play a crucial role in the solar magnetic cycle and in supplying mass and energy to the fast solar wind, ultimately being vital in controlling solar activities and…

The seismic study of the Sun and other stars offers a unique window into the interior of these stars. Thanks to helioseismology, we know the structure of the Sun to admirable precision. In fact, our knowledge is good enough to use the Sun…

Solar and Stellar Astrophysics · Physics 2016-10-19 Sarbani Basu

The Solar TErrestrial RElations Observatory - \emph{STEREO}, is a system of two identical spacecraft in Heliocentric Earth orbit. We use the two Heliospheric Imagers (HI), which are wide angle imagers with multi-baffle systems to do high…

Solar and Stellar Astrophysics · Physics 2011-08-11 Vinothini Sangaralingam , Ian R Stevens

We discuss how recent advances in observations, theory and numerical simulations have allowed the stellar community to progress in its understanding of stellar convection, rotation and magnetism and to assess the degree to which the Sun and…

Solar and Stellar Astrophysics · Physics 2015-03-24 A. S. Brun , R. A. Garcia , G. Houdek , D. Nandy , M. Pinsonneault

Modern studies of the Sun involve coordinated observations collected from a collage of instruments on the ground and in orbit. Each instrument has its own constraints, such as field of view, duty cycle, and scheduling and commanding…

Instrumentation and Methods for Astrophysics · Physics 2018-07-02 Neal Hurlburt , Ryan Timmons , Ralph Seguin