IAU Special Session 10 - Dynamics of the Star-Planet Relations

Dynamics of the Star-Planet Relations

Aims

This Special Session aims to foster cross-disciplinary studies of Heliophysics and Asterosphysics: the physics of the sun and stars and their environment in the interstellar medium. It raises the question: What can the knowledge we gained in heliophysics bring to the quest for understanding extra-solar systems and the fundamental physical processes in the Asterospheres. And, in return, what can the studies of other stellar systems in our galaxy bring to our understanding of our own stellar system, the Heliosphere. It will review the state-of-the-art of the theoretical, numerical modeling, and space-borne and ground-based observational studies of the dynamics of Sun-Earth relation, Sun-planet relation, and extrasolar star-exoplanet relation, and identify the key problems in these fields to be addressed by astronomy, astrophysics, and space physics communities in the coming years.

Topics

Perspectives of the dynamics of the Sun-Earth and star-planet relations
Fundamental physical processes in the stellar-planetary environment
Stellar-solar variability
Sun-Earth and star-planet interactions
Stellar-solar winds: Physics of the asterospheres and the heliosphere
Interactions of stellar-solar winds with the Local Interstellar Medium
Prospects: Ground facilities and space missions, theory and simulations

Scientific sessions

SpS10 will consist of 7 Sessions with invited talks: Keynote Talks of 35 min, Review and Topical Talks of 20 or 30 min; plus a poster session dedicated to contributed papers

Educational activities

In addition to scientific sessions, two Public Forums will be held at Peking University and Tsinghua University, on 27 and 29 August 2012, respectively

Rationale:

This Symposium will review the state-of-the-art of the theoretical, numerical modeling, and space-borne and ground-based observational studies of the dynamics of Sun-Earth relation, Sun-planet relation, and extrasolar star-exoplanet relation, and to identify the key problems in these fields to be addressed by astronomy, astrophysics, and space physics communities in the coming years. This is the first effort to bring together three cross-disciplinary communities of IAU: heliospheric astrophysicists, stellar astrophysicists, and exoplanetary astrophysicists to discuss recent progresses in these fields in an integrated manner.

This proposal has the support of key IAU officers in the SOC: Presidents of Divisions II, III, and IV (Sun and Heliosphere, Planetary Systems Sciences, Stars). Presidents of Div. II / Commission 10 (Solar Activity); of Div. II / Commission 12 (Solar Radiation and Structure); of Div. II / Commission 49 (Interplanetary Plasma and Heliosphere); of Div. III / Commission 53 (Extrasolar Planets). Chair of Div. II / WG on International Collaboration on Space Weather. Besides Divs. II, III, and IV, this Symposium can also attract a broad interest in several other IAU Commissions.

Descriptions:

The progress of studies on the dynamics of the star-planet relation has accelerated significantly in the past years. The Sun constantly releases energy into space through electromagnetic and mass emissions. The absorption by the Earth of electromagnetic emissions such as IR and UV radiation from the Sun triggers photosynthesis and makes life possible; it also influences the circulation of currents in the atmosphere and oceans, as well as the formation of cloud, rain, snow and ice which are responsible for climate change. Mass emission in the form of solar wind, via its interaction with the Local Interstellar Medium defines the heliosphere. Transient coronal mass ejections drive interplanetary shocks, which accelerate particles to very high energies and cause magnetic storms on planets. Solar activity is controlled by the magnetic fields generated by its dynamo that exhibits solar cycles varying with an average cycle of eleven years.

The planetary-exoplanetary environment refers to the regions of planetary and exoplanetary atmospheres, which are influenced by the physical conditions in solar and extrasolar stellar wind, respectively. The recent discovery of exoplanets has led to a rapid advance in the theoretical understanding of stellar and planetary formation and evolution, and the implementation of dedicated observational programs of exoplanets, including the search for radio emissions from exoplanets. The planetary environment in the solar system has been explored in situ by a large number of spacecraft and analyzed extensively by ground-based observations. These experimental observations have been verified in detail by analytical theories and numerical simulations. Our knowledge of the physical processes occurring in the nearby planetary environment provides the basic tools for our investigation of the complex physical processes taking place in the distant exoplanetary environment in extrasolar systems.

The planetary magnetospheres of the solar system come in many forms and sizes. A comparative study of planets helps us to reconstruct the past history and predict the future evolution of the Earth. Planetary science allows us to contrast the properties of the Earth's environment with the environment of other planets, to reveal how planetary magnetospheric-ionospheric-atmospheric processes respond to changes of planetary scale and rotation rate and of solar wind structure in the vicinity of the planet.

The study of exoplanets is one of the priority research areas of astronomy and astrophysics today. It aims to discover Earth-like exoplanets, and to search for signs of habitability and evidence of biosignatures. One of the fundamental requirements for the planet habitability is the existence of a planetary magnetosphere and a planetary atmosphere. The Earth's magnetosphere and atmosphere prevent harmful galactic cosmic rays from reaching the Earth's surface, without which human life may be in jeopardy. It is natural to expect that the exoplanetary environment exhibits a huge diversity of dynamics and structures.

Many exoplanetary systems possess planets that are located very close to their host stars, the most common example being the hot Jupiters. This configuration leads to strong tidal effects, both on the planetary system and on the central star, which need to be understood to constraint the formation and evolution processes of these systems. The surprising discovery of 51 Peg-b in 1995, then the subsequent evidence that a population of similar hot gas giants is a prominent feature of exoplanetary systems, indicated that the solar system is by no means to be taken as a template, and that dynamical migration is a crucial element to take into account in the modeling of planetary system evolution. Present space-borne and ground-based surveys, using facilities such as the CoRoT or Kepler satellites or the Harps ultra-stable spectrograph at ESO-La Silla, as well as future developments, such as the Espresso spectrograph on the VLT and the ESA PLATO satellite, will provide us with a solid statistical knowledge of planetary systems, and strong constraints for further modeling of their dynamical evolution.

The magnetic interactions of solar-stellar winds with planetary-exoplanetary magnetospheres leads to energetic electrons resulting from magnetic reconnections in the planetary-exoplanetary environment, with the consequent emission of nonthermal planetary-exoplanetary radio waves. A variety of intense nonthermal planetary radio emissions are known in the solar system, e.g., the auroral radio emissions from Earth, Jupiter, Saturn, Uranus and Neptune, and the radio bursts from the Io-Jupiter flux tube. The former is thought to be driven by the solar wind flow pressure or energy flux on the magnetospheric cross-section, while the latter is a product of the Io-Jupiter electrodynamic interaction. Some studies that examined the possibility of radio emissions from exoplanets have concluded that hot Jupiters, if magnetized, might emit strong radio emissions detectable by large ground-based low-frequency antenna arrays.

The interaction of the astrosphere with its Local Interstellar Medium is expected to strongly influence the size and shape of the astrosphere. Recently with the exciting measurements from the two Voyager spacecraft and IBEX we learned how the heliosphere is shaped by the interstellar magnetic field and nonthermal processes. These ideas will certainly fertilize and carry to other astrospheres.

The star-planet relation exhibits the behaviors of a complex system governed by a rich variety of dynamical and nonlinear phenomena. The aim of this IAU Symposium is to present a review of the state-of-the-art of the theoretical, numerical modeling, and space-borne and ground-based observational studies of the dynamics of Sun-Earth relation, Sun-planet relation, and extrasolar star-exoplanet relation, and to identify the key problems in this field to be addressed by astronomy, astrophysics, and space physics communities in the coming years. In particular, this Symposium will discuss the implications of the recent advances in this field for the preparation of main future space missions involving space agencies and programs worldwide, e.g., ILWS (International Living with a Star), CNSA (Chinese National Space Agency), ESA (Japanese Space Agency), JAXA (Japanese Aerospace Exploration Agency), NASA (National Aeronautics and Space Administration), and the contribution of the astronomical and astrophysical communities in international programs on the study of the impact of solar variability on climate change such as the CAWSES-II (Climate and Weather of the Sun-Earth System) program of SCOSTEP (Scientific Committee on Solar-Terrestrial Physics) of ICSU (International Council for Science).

Program:

Session I: Overview of the star-planet relations
Session II: Physical processes in the stellar-planetary environment
Session III: Stellar-solar variability
Session IV: Sun-planet relations
Session V: Star-planet relations
Session VI: Heliosphere and Asterospheres
Session VII: Perspectives of the star-planet relations

Public Forum I on "The Sun-Planet Relations" at Peking University
Public Forum II on "The Star-Planet Relations" at Tsinghua University

« SpS10 Dynamics of the star-planet relations » FINAL PROGRAM, version 11 (3 July 2012)

Session I: Overview of the star-planet relations (2 h)(Monday, Aug. 27, 10:30-12:30)

Chairs: Jean-Louis Bougeret and Xueshang Feng

Time	Title	Speaker
10:30-10:35	Opening	Jean-Louis Bougeret
10:35-10:45	Communicating Heliophysics with the public (invited)	Carine Briand
10:45-11:20	Keynote talk on "The Heliosphere" (invited)	John Richardson
11:20-11:55	Keynote talk on "The Asterospheres" (invited)	Jeffrey Linsky
11:55-12:30	Keynote talk on "Sun-Earth and star-planet relations" (invited)	Sami Solanki

Session II: Physical processes in the stellar-planetary environment, part 1 (1.5 h)(Monday, Aug. 27, 14:00-15 :30)

Chairs: Sandra Chapman and Lin-Ni Hau

Time	Title	Speaker
14:00-14:30	Magnetic reconnection and particle acceleration - A review (invited)	James Drake
14:30-14:50	Conditions for the onset of magnetic reconnection deduced from solar wind observations (invited)	Tai Phan
14:50-15:10	Physics of thin current sheet and magnetic reconnection (invited)	Lin-Ni Hau
15:10-15:30	Cross-scale coupling in space plasmas: lessons from multi-spacecraft (invited)	Malcolm Dunlop et al.

Session II: Physical processes in the stellar-planetary environment, part 2(2 h)(Monday, Aug. 27, 16:00-18:00)

Chairs: Sandra Chapman and Lin-Ni Hau

Time	Title	Speaker
16:00-16:20	Energetic particles in the heliosheath (invited)	Randy Jokipii
16:20-16:40	Impact of the nonuniformity/nonstationarity of a perpendicular shock front on ions dynamics (invited)	Bertrand Lembège et al.
16:40-17:00	Nonlinear dynamics of relativistic electrons interacting with whistler-mode chorus emission and EMIC triggered emissions in the planetary magnetosphere (invited)	Yoshiharu Omura
17:00-17:20	Solar magnetic field (invited)	Jie Jiang
17:20-17:40	MHD turbulence in the solar wind (invited)	Qing-Yu Luo et al.
17:40-18:00	Characterisation of exoplanet atmospheres, magnetospheres and stellar winds from energetic neutral atom observations (invited)	M. Holmstrom et al.

Public Forum I on "The Sun-Planet Relations" at Peking University (2 h) (Monday, August 27, 20:00-22 :00)

Chairs: S. Fu, J.-L. Bougeret, and A. Chian

Time	Title	Speaker
20:00-20:15	Solar magnetic cycles (invited)	Alan Sacha Brun
20:15-20:30	Origin of the solar wind (invited)	Chuanyi Tu
20:30-20:45	Sun-Earth and star-planet relations (invited)	Sami Solanki
20:45-21:00	The heliosphere (invited)	John Richardson
21:00-21:15	The asterospheres (invited)	Jeffrey Linsky
21:15-21:30	Laboratory experiments of astrophysical phenomena (invited)	Hideaki Takabe

Session III: Stellar-solar variability (2 h) (Tuesday, Aug. 28, 10:30-12:30)

Chairs: Christopher Corbally and Valentin Martinez Pillet

Time	Title	Speaker
10:30-11:00	Solar magnetic cycles (invited)	Alexander Kosovichev
11:00-11:30	From quiet to active inner Sun : what are the consequences on Sun-planet Relationship (invited)	Sylvaine Turck-Chièze
11:30-11:50	From helioseismology to asteroseismology (invited)	Jørgen Christensen-Dalsgaard
11:50-12:10	Dynamic coupling between the photosphere and chromosphere revealed with HINODE (invited)	Yukio Katsukawa
12:10-12:30	Sunspots and Starspots: Cut from the same cloth? (invited)	Svetlana Berdyugina

POSTERS
	Inspection for secular variation of Earth's rotation inferred from Chinese ancient astronomical records	Yong Li
	A physical reconstruction of solar magnetic field since 1700	Jie Jiang et al.

Session IV: Sun-planet relations (1.5 h)(Tuesday, Aug. 28, 14:00-15:30)

Chairs: A. Boss and N. Gopalswamy

Time	Title	Speaker
14:00-14:30	Multi-spacecraft observations of solar wind-magnetosphere interactions (invited)	Hiroshi Hasegawa
14:30-14:50	A 3-D magnetohydrodynamic simulation of the correspondence of EIT and CME induced waves (invited)	S. T. Wu and C.C. Wu
14:50-15:10	Acceleration and deceleration of Coronal Mass Ejection and its driven shock (invited)	Chin-Chun Wu et al.
15:10-15:30	3D MHD numerical study of two CMEs' evolution and their interaction	Fang Chen et al.

POSTERS
	Solar flares generated by impacts of comets with the Sun	Firuz Ibodov and Subhon Ibadov
	The star-planet interaction: 3D gas dynamic simulation of the flow structure in the vicinity of the hot Jupiter	Dmitry Bisikalo et al.
	Solar excitation of millennial Earth rotation oscillations	Yavor Chapanov et al.
	Langmuir waves associated with type III bursts and impulsive electron events	Sonja Vidojevic et al.
	The space weather and geomagnetic storms program of the ON/MCTI - instrumental network, plans and first findings	Alexandre Humberto Andrei et al.
	Significant variability in the Sun-Earth interaction events during solar cycles 23 and 24	Nat Gopalswamy et al.
	Venus transit : preliminary data on solar diameter	Costantino Sigismondi and Xiaofan Wang
	Earth-based detection of Uranus' aurorae	Laurent Lamy et al.
	Observation of unusual burst at decameter wavelengths	Valentin Melnik

Session V: Star-planet relations, part 1(2 h)(Tuesday, Aug. 28, 16:00-18:00)

Chairs: A. Boss and N. Gopalswamy

Time	Title	Speaker
16:00-16:30	Star-planet interactions in a stellar-planetary system (invited)	Annie Baglin
16:30-17:00	Solar System evolution and the diversity of planetary systems (invited)	Patrick Michel and Alessandro Morbidelli
17:00-17:20	Planets at very wide orbits from re-capture of free floating planets	Thijs Kouwenhoven and Hagai Perets
17:20-17:40	Interaction between a close-in exoplanet with the magnetosphere of its host star: planetary migration and inflation	Randy Laine and Douglas Lin
17:40-18:00	Single evolved stars with enhanced rotation: A signature of planetary accretion?	Bruno Canto Martins et al.

Session V: Star-planet relations, part 2(2 h)(Wednesday, Aug. 29, 10:30-12:30)

Chairs: A. Boss and N. Gopalswamy

Time	Title	Speaker
10:30-10:50	Bow shocks around exoplanets (invited)	Aline Vidotto et al.
10:50-11:10	Physics and evolution of the stellar winds from low to intermediate stars (invited)	Takeru Suzuki
11:10-11:30	Observation and modelling of transits and starspots in the WASP-19 planetary system	Jeremy Tregloan-Reed
11:30-11:50	Modeling stellar granulation as seen in disk-integrated intensity	Réza Samadi et al.
11:50-12:10	Spectrophotometric explorations of chromospheric activity variations for star systems with exoplanets	Yuliana Kuznyetsova et al.
12:10-12:30	Jupiter's polar activities driven by high-speed magnetized solar winds (invited)	Yu-Qing Lou

POSTERS
	Periodic orbits in the Chermnykh-Like problem with oblateness	Badam Singh Kushvah
	Zero velocity surfaces and linear stability of triangular equilibrium points in the generalized photogravitational Chermnykh-like problem with power-law profile	Ram Kishor and Badam Singh Kushvah
	Internal structure and geometrical flattening of mantle and liquid core of the Moon	Alexander Gusev
	Connection between the solar activity and the Earth's rate of rotation	Dusan Marceta and Stevo Segan
	Effects of radiation on the geometry of zero-velocity surfaces in the photo-gravitational circular restricted 3-body problem	Dusan Marceta et al.
	Investigation of some transiting exoplanet systems	Viktoriia Krushevska et al.
	Calibration in the ultraviolet : the FONDUE star catalog	Aurélie Reberac and the FONDUE team
	The fate of planetary systems in open clusters	X.C. Zheng and Thijs Kouwenhoven
	The dynamical evolution of Brown Dwarf systems formed from disk fragmentation	Yun Li et al.
	The influence of terrestrial planet formation in the observed chemical anomalies in the Sun	Jorge Melendez
	Whether planet systems affect stars' initial rotation velocities and the Lithium abundance	Ge Zhishuai
	Asteroseismology analysis of host stars with exoplanets observed by Kepler	Zhijia Tian et al.
	Gravitational field's description and dynamical laws of the fields' interaction	Ji Luo

Session VI: Heliosphere and Asterospheres,part 1(1.5 h) (Wednesday, Aug. 29, 14:00-15:30)

Chairs: Rosine Lallement, Brian Wood and Vlad Izmodenov

Time	Title	Speaker
14:00-14:20	Multi-component nature of the SW/LISM interaction : models vs. Observations (invited)	Vladislav Izmodenov
14:20-14:35	Magnetic reconnection in the heliosheath and its signatures and consequences (invited)	James Drake et al.
14:35-14:50	Modeling of heliosphere and magnetic reconnection in the heliosheath (invited)	Merav Opher et al.
14:50-15:10	The heliosphere and the interplanetary ultraviolet background (invited)	Eric Quémerais
15:10-15:30	Effects of the solar wind-LISM interaction on the properties of backscattered solar Lyman-alpha radiation measured by SOHO/SWAN	Olga Katushkina et al.

Session VI: : Heliosphere and Asterospheres,part 2(2 h) (Wednesday, Aug. 29, 16:00-18:00)

Chairs: Vlad Izmodenov, Rosine Lallement and Brian Wood

Time	Title	Speaker
16:00-16:20	The Astrospheres of Sun-like stars (invited)	Brian Wood
16:20-16:40	Recent discoveries and investigations into infrared bow shocks between stellar winds and the ISM (invited)	Toshiya Ueta
16:40-17:00	Dust in bow shocks and shells : Probing the interaction between stellar winds and the ISM (invited)	Nick Cox et al.
17:00-17:20	Radio observations of the interfaces between red giant stellar outflows and the ISM (invited)	Thibault Lebertre et al.
17:20-17:40	Multiple interaction features in the slow and dusty winds of AGB stars (invited)	Andreas Mayer et al.
17:40-18:00	The interaction between the runaway O star HD34078 (AE Aurigae) with the surrounding molecular cloud (invited)	Pierre Gratier et al.

Public Forum II on "The Star-Planet Relations" at Tsinghua University (2 h)(Wednesday, August 29, 20:00-22:00)

Chairs: Y.-Q. Lou, A. Chian, and K. Meech

Time	Title	Speaker
20:00-20:15	The interior of stars (invited)	Sylvaine Turck-Chièze
20:15-20:30	Stellar-planetary dynamos (invited)	A. Brandenburg
20:30-20:45	Stellar wind evolution and its effect on planets (invited)	Brian Wood
20:45-21:00	Sun-planet relations (invited)	W.-H. Ip
21:00-21:15	Star-planet interactions in a stellar-planetary system (invited)	Annie Baglin
21:15-21:30	Observation and characterization of exoplanet's atmosphere-magnetosphere environment (invited)	Helmut Lammer

Session VI: : Heliosphere and Asterospheres,part 3(2 h) (Thursday, Aug. 30, 10:30-12:30)

Chairs:, Brian Wood, Vlad Izmodenov and Rosine Lallement

Time	Title	Speaker
10:30-10:50	The role of stellar plasma interaction in terrestrial planetary atmosphere evolution (invited)	Helmut Lammer et al.
10:50-11:10	The wind effects of weak-lined T Tauri stars on the environment of extrasolar planets (invited)	Vera Jatenco-Pereira et al
11:10-11:30	Probing the stellar plasma environment around exoplanets via Energetic Neutral Atom modeling (invited)	Kristina Kislyakova et al.
11:30-11:50	Space weather at small distances from the Sun and in extra-solar planet environment (invited)	Merav Opher
11:50-12:10	Physics and evolution of the stellar winds (invited)	Moira Jardine
12:10-12:30	Numerical simulation and nonlinear dynamics of turbulent dynamos (invited)	Erico Rempel et al.

POSTERS
	How does merging affect the CMIR-driven shocks as they propagate into the heliosheath?	Elena Provornikova et al.
	Astrosphere or Asterosphere?	Jean-Louis Bougeret

Session VII: Perspectives of the star-planet relations, part 1(Friday, Aug. 31, 8:30-10:00)

Chairs: A. Chian, G. Qin, and N. Vilmer

Time	Title	Speaker
08:30-08:45	Future programs in star-planet relations (invited)	Magali Deleuil
08:45-09:05	Will superfares occur on our Sun? (invited)	Kazunari Shibata
09:05-09:25	Laboratory experiments of shocks and magnetic reconnections (invited)	Yasuhiro Kuramitsu et al.
09:25-09:45	Magnetic twist : a source and property of space weather	Joern Warnecke et al.
09:45-10:00	Coronal magnetic topologies and dynamics of interplanetary electrons	Chuan Li et al.

Session VII:Perspectives of the star-planet relations, part 2(Friday, Aug. 31, 10:30-12:30)

Chairs: A. Chian, G. Qin, and N. Vilmer

Time	Title	Speaker
10:30-10:50	Particle acceleration and transport in the Heliosphere (invited)	Gang Li
10:50-11:10	Dispersive Alfvénic turbulence in solar-terrestrial relations	Yuriy Voitenko and Johan De Keyser
11:10-11:30	Signatures of Coronal Mass Ejections in the Heliosphere (invited)	Nat Gopalswamy
11:30-11:50	Are CMEs really mass motions? (invited)	Peng-Fei Chen
11:50-12:10	CMEs and the buildup of magnetic flux in the Heliosphere	David Webb et al.
12:10-12:30	Perspective of future space- and ground-based projects for solar observations in China (invited)	Yihua Yan
	Closing	SOC chairs

Dynamics of the Star-Planet Relations

Aims

Topics

Scientific sessions

Educational activities

Rationale:

Descriptions:

Program:

SOC:

Venue:

Registration:

Participants:

Public Forums:

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