Sunday, November 30, 2014 to Friday, December 5, 2014

IAUS305 Banner Image

Punta Leona image
Punta Leona, Costa Rica

The advances in both solar, planetary, and extra-solar science employing polarimetric diagnostics are far-reaching, and the pace of discovery is accelerating rapidly. IAU Symposium 305, convened in Punta Leona, Costa Rica between November 30–December 5, 2014. It was structured to facilitate communication between the solar and nighttime communities that, to date, work mostly independently. It's main objective was to share common underlying physics that controls not only the observed phenomena, but also the generation of the polarized radiation.

Goals of the Symposium were to:

  1. Facilitate discourse between solar and nighttime polarimetry communities: In addition to scientific advances, participants will learn about ongoing developments in polarimetric instrumentation, observational techniques, methods of data analysis and interpretation, and numerical modeling. Each session in the program will have a mix of solar and extra-solar contributions. Furthermore, each day will have sessions on both science results and techniques.
  2. Stimulate research and education in astronomical sciences in Central and Latin America: This IAU Symposium will be the first such Symposium to be held in Central America. The organizers encourage participation by students and young researchers from Central and Latin America. To this end, the first day of the Symposium (30 November 2014) will be devoted to introductory tutorials on fundamental aspects of astronomical polarimetry.
  3. Showcase recent scientific advances inspired by astronomical polarimetry: Remarkable advances have been made in recent years with the aid of astronomical polarimetry. The Symposium will showcase these advances, and focus on future developments.

Scientific Organizing Committee: F. Frutos Alfaro (co-chair), E. Alecian, S. Bagnulo, S. Berdyugina, G. Cauzzi, R. Centeno, M. Faurobert, K. Ichimoto, Bruce Lites (co-chair), A. M. Magalhaes, M. Martinez Gonzalez, M. Mishchenko, K. N. Nagendra, R. Stencel, J. Trujillo Bueno (co-chair), J. Wang
Local Organizing Committee:
F. Frutos Alfaro (co-chair), H. Gutierrez, W. Hawkins, L Herrera, B. Lites (co-chair), T. Rivas, L. Taliashvili (co-chair)

IAUS305 Logo Image

Science Program || Program At-A-Glance || Abstract Booklet || Participants Contact Information

Sunday 30 November

Astronomical Polarization Tutorials

The Physics of Polarization - Degl'Innocenti

Nighttime Polarimetry – Bagnulo

Daytime Polarimetry – Solanki

Planetary Atmospheres & Surfaces – Mischenko

Monday 1 December

SESSION I: Solar and Stellar Surface Magnetic Fields – I

CHAIR: S. Solanki

KEYNOTE: Two Centuries of Solar Polarimetry - Harvey

KEYNOTE: Surface Magnetic Fields across the HR diagram - Landstreet

CHAIR: J. Trujillo Bueno

INVITED: Small-scale solar and stellar surface fields - Martínez González

Do the quiet Sun magnetic fields vary with the solar cycle? – Faurobert

The magnetic flux history of supergranular cells in the photosphere of the Sun - Bellot Rubio (missing)

Solar surface anisotropy on the magnetic field – Bommier

The evolution of individual and groups of flux tubes as seen by IMaX/Sunrise - del Toro Iniesta

The persistence of apparent non‐magnetohydrostatic equilibrium in NOAA 11035 – Jaeggli (Metcalf Travel Award Recipient )

CHAIR: O. Kochukhov

INVITED: Polarimetric tomography of stellar surfaces – Petit

The BCool project – Marsden

Detection of magnetic fields in evolved low‐intermediate mass stars – Sabin

Full Stokes (IQUV) polarimetry of AGB and post‐AGB stars – Lebre

Polarimetric Observations of Beta CrB with the Catania Spectro‐polarimeter – Martin

Flare footpoint infrared spectropolarimetry including He I 1083 nm – Judge

Photospheric and chromospheric polarimetry of solar flares – Kleint

SESSION 2: Future Directions in Astrophysical Polarimetry – I 

CHAIR: R. Casini

INVITED: Polarimetry and the Solar-C Mission – Ichimoto

Polarization calibration and scheduling for the Daniel K. Inouye Solar Telescope – Elmore

The Polarimetric and Helioseismic Imager on Solar Orbiter – Solanki

A Large Coronagraph for Solar Coronal Magnetic Field Studies – Tomcxyk

Tuesday 2 December

SESSION 3: Physical Processes

CHAIR: P. Judge

KEYNOTE: Theoretical Tools for Spectro-Polarimetry – Casini

INVITED: Atomic Scattering Polarization: Observations, Interpretation and Predictions – Trujillo Bueno

INVITED: Scattering Polarization from Macroscopic Particles – Mishchenko

Resolution of the D1 enigma: Physics of polarized scattering at multi‐level systems – Stenflo

Chromospheric diagnosis with forward‐scattering Hanle effect in hydrodynamical models - Carlin Ramirez

SESSION 4: Instrumentation for Astronomical Polarimetry

CHAIR: S. Jaeggli

INVITED: Challenges of Infrared Polarimetry of the Sun – Lin

A ZIMPOL polarimeter system at GREGOR in Tenerife – Bianda

Coronal Magnetograph (CorMag) for Space‐ and Ground‐based Solar Observatories – Fineschi

INVITED: New Optics for Astronomical Polarimetry – Baur

Preliminary Design of the Full‐Stokes UV and Visible Spectropolarimeter for UVMag – Pertenais

A near infrared imaging polarimeter: POLICAN – Rangaswamy

Fast Solar Polarimeter – Feller

SESSION 5: Data Analysis techniques for Polarization Observations

CHAIR: J. C. del Toro Iniesta

INVITED: Pattern Recognition Techniques for Astronomical Polarization Measurements –Lopez Ariste

INVITED: Multi-line Techniques for Inference of Stellar Magnetic Fields – O. Kochukhov

INVITED: New generation Stokes inversion codes – Ramos

Effect of cross‐ redistribution on the resonance scattering polarization of O I line at 1302 A – Bhasari

Inhomogeneity and velocity fields effects on scattering polarization in solar prominences – Milic

How to analyze millions of spectral profiles of an X1.0 flare efficiently and still feel good afterward - Sainz Dalda

Spatially coupled inversion of spectro‐polarimetric data - van Noort

Wednesday 3 December

SESSION 6: Future Directions in Astrophysical Polarimetry – II

CHAIR: B. Lites

INVITED: Polarization Measurements at ATST/DKIST – Martinez Pillet

SolpeX: the soft X‐ray flare polarimeter for ISS – Sylwester

Sounding Rocket Experiment: Chromospheric Lyman‐Alpha Spectro‐Polarimeter (CLASP) – Kubo

SESSION 7: Solar and Stellar Surface Magnetic Fields – II

CHAIR: J. Landstreet

INVITED: Magnetic Fields in Early-Type Stars – Grunhut

The origin of magnetic fields in hot stars – Neiner

High Precision Polarimetry of Magnetic Massive Stars – Carciofi

Ultra‐weak magnetic fields and atmospheric dynamics of Am stars – Blazère

CHAIR: R. Centeno

Full Stokes observations in the He 1083 nm spectral region covering a M3.2 class flare – Kuckein

A two dimensional view of spicules from He 1083 nm triplet observations - Orozco Suarez

Flux emergence event beneath an eruptive filament - Palacios

Polar Faculae Magnetism - Pastor Yabar

Thursday 4 December

SESSION 8: Polarization Diagnostics of Atmospheres & Circumstellar Environments

CHAIR: J. Vink

KEYNOTE: Circumstellar Polarimetry – Magalhaes 

INVITED: Probing Coronal and Chromospheric Magnetic Fields with Radio Imaging Polarimetry– Shibasaki (presented by Ichimoto)

INVITED: Polarimetry as a Window into of Supernova Explosions and Progenitors – Hoffman

Polarimetry of Supernovae – Maund (missing)

CHAIR: S. Gibson

Magnetic and electric fields inference in chromospheric jets using Paschen lines – Anan

Intensity and Linear Polarization of Fe XIII 10747 and 10798 in the Corona – Plowman

Polarimetric measurements in prominences observed by THEMIS – Schmieder

The Coronal Structure of the Sun‐Like Exoplanet‐ Host GJ 3021 - Alvarado-Gomez

CHAIR: F. Menard

Inferring condensate structures in ultracool dwarfs using linear polarimetry - Miles‐Páez

Linear line spectropolarimetry and circumstellar structures – Vink

Modeling AB Aurigae's Envelope – Lomax

Diagnosing the SEEDS of Planet Formation – Wisniewski

CARMA observations of magnetic fields in star‐forming filaments – Hull

Magnetic field structure in star‐forming regions – Chakali

On the Peculiarities of Manifestation of kG Magnetic Elements in Observations of the Sun with Low Spatial Resolution – Demidov

SESSION 9: Polarimetry as a Tool for Discovery Science – I

CHAIR: M. Mishchenko

High contrast imaging of circumstellar disks in scattered light: the polarimetric approach of VLT/SHPERE – de Boer

INVITED: Polarization Biosignatures of Planet Earth – Sterzik

Polarimetry: a primary tool for the physical characterization of the Asteroids – Cellino

Spectro-polarimetry: a new tool for the physical characterization of asteroids – Bagnulo

Friday 5 December

SESSION 10: Polarimetry as a Tool for Discovery Science - II

CHAIR: S. Bagnulo

Polarimetry as a tool to find and study habitable planets orbiting white dwarfs – Fossati

Stellar magnetic activity and its influence on the habitability of exoplanets – Lueftinger

Polarimetric detection of dust in the candidate disintegrating planet KIC1255754 8b – Palle

SESSION 11: Numerical Modeling of Polarized Emission

CHAIR: M. Faurobert

INVITED: On the importance of partial frequency redistribution in modeling the scattering polarization – Nagendra

INVITED: Three-dimensional simulations of Scattering Polarization and the Hanle Effect in MHD Chromospheric Models – Stepan (missing)

INVITED: Modeling of Polarized Emission and Absorption from Protoplanetary Disks – Menard

The impact of surface dynamo magnetic fields on the chemical abundance determination – Shchukina


Poster Group A and Poster Group B

A1: Analytical modeling of thirty meter telescope polarization – Anche

A2: The importance of non ‐ photon noise in astronomical spectro‐polarimetry – Bagnulo

A3: Polima‐2: A dual‐beam imaging polarimeter for the San Pedro Martir National Observatory – Bermúdez Bustamante

A4: Theoretical polarization spectrum of Na I D1 & D2 near the solar limb – Bommier

A5: The Chromosphere and Prominence Magnetometer – de Wijn

A6: An electronic inverter of the radiative transfer equation for polarized light – del Toro Iniesta

A7: On the cross‐ calibration of the Hsos Smat full disk longitudinal magnetograms with data sets from other instruments – Demidov

A8: Digital radar in Costa Rica. design, tools and results – Garbanzo-Salas

A9: Design of full Stokes polarimeter for chromospheric measurements with SOLIS/VSM – Gosain

A10: Solar full‐disk polarization measurement with the Fe I 15648 line – Hanaoka

A11: A simple low‐resolution spectropolarimeter for Zeeman measurements of stellar magnetic fields – Hiriart

A12: Cyclic variation of internetwork magnetic fields – Jin (Canceled)

A13: Paschen‐Back effect involving fine and hyperfine structure states – Krishnamurthy (Presenter: Nagendra)

A14: Measurement of seeing induced spurious polarization – Krishnappa

A15: Unresolved mixed polarity magnetic fields at flux cancellation site in solar photosphere at 0”.3 spatial resolution – Kubo

A16: Optical and near-infrared linear polarimetry of low mass stars, brown dwarfs – Miles‐Páez

A17: The DAO liquid crystal spectropolarimeter dimaPol – Monin

A18: A revisit to model the Cr I triplet at 5204‐5208 A and Ba II D_2 line at 4554 A in the second solar spectrum – Narayanamurthy (Presenter: Nagendra)

A19: Magnetic field configuration in a flaring active region: emerging and shear regions – Palacios

A20: Waves and Magnetism in the Solar Atmosphere (WAMIS) – Strachan

A21: Inferring magnetic and plasma properties at multiple heights in the Sun's atmosphere with IBIS data – Tarr (Metcalf Travel Award Recipient )

A22: Parallelization of the SIR code for the investigation of small‐ scale magnetic features in the solar photosphere – Thonhofer

A23: Spectrograph for the Brazilian Solar Telescope – Vieira (presenter: Palacios)

A24: Performance Measurement of LCVR From Meadowlark Company – Wang (Canceled)

A25: Commissioning Results of a New Polarimeter, DUSTPol – Wolfe


B1: The high energetic particles released during the decline phases of solar cycle 24 – Abdel Hady

B2: Line variations profile of a solar analog star, the search – Amazo-Gomez

B3: Radiative transfer simulations of multiphase AGN tori: thermal emission and polarization – Baes

B4: Is there life in our solar system? – Bagnulo

B5: Barbarian asteroids: challenging open questions and constraints to the models of formation of the planetary system – Cellino

B6: Modeling of the center‐to‐limb variation of the Ca I 4227 A line using FCHHT models – Dayanada (Presenter: Nagendra)

B7: Assessing the behavior of modern solar spectropolarimeters and magnetographs – del Toro Iniesta

B8: PRD effects on polarized lines formed in moving media in the presence of a weak magnetic field – Sampoorna (Presenter: Nagendra)

B9: Forward modeling coronal magnetic fields – Gibson

B10: Probing disk inhomogeneities using spectropolarimetry in the extreme binary epsilon Aurigae – Geise

B11: Magnetic evolution of coronal hole and the associated filament – Gutiérrez

B12: Polarized continuum radiation from stellar atmospheres – Harrington

B13: Study of polarization in proto-planetary nebulae – Ibarra Garcia

B14: Magnetism, polarization processes and mass loss of red supergiant stars – Josselin

B15: Studies of supersonic downflows in sunspot penumbrae using spectropolarimetric data – Kim

B16: Mass Transfer in the V356 Sgr Binary System – Lomax

B17: TeV cosmic ray anisotropy from the turbulent magnetic field at the heliospheric boundary – Lopez-Barquero

B18: Optical and near‐ infrared linear spectropolarimetry of the Earth – Miles‐Páez

B19: An Equation for Uranus Zonal Wind – Murillo

B20: Probing the geometry of type II‐ plateau supernovae explosions – Pignata

B21: Multi‐ wavelength comparative study of oscillations of sunspot and filament – Rojas

B22: Zeeman Doppler imaging of a cool star using all four Stokes parameters for the first time – Rosén

B23: Formation of polarized spectral lines in atmospheres with horizontal inhomogeneities – Tichy

B24: High‐velocity Wind from IRS 1 in the NGC 2071IR – Trinidad

B25: Long-Term Evolution of Filaments Associated with Emerging Magnetic Flux – Taliashvili

B26: Coronal Magnetism: Hanle Effect in UV and IR Spectral Lines – Raouafi

IAUS305 Logo Image


Julian David Alavarado-Gomez

European Southern Observatory

Eliana Maritza Amazo-Gomez

Universidad Nacional de Colombia

Tetsu Anan

Kyoto University

Ramya Manjunath Anche

Indian Institute of Astrophysics

Lorena Arias

Universidad Iberoamericana

Anabel Arrieta

Universidad Iberoamericana

Andrés Asensio Ramos

Instituto de Astrofisica de Canarias

Maarten Baes

Universiteit Gent

Stefano Bagnulo

Armagh Observatory

Tom Baur

Meadowlark Optics

Luis Bellot Rubio

Instituto de Astrofisica de Andalucia (CSIC)

Luis Carlos Bermúdez Bustamante

Universidad Nacional Autónoma de México

Anusha Bhasari

Max Planck Institute for Solar System Research

Michele Bianda

Istituto Ricerche Solari Locarno (IRSOL)

Aurore Blazère


Véronique Bommier

Obseravtoire de Paris

Alexander Brown

University of Colorado

Rodrigo Carboni

University of Costa Rica

Alex Carciofi

University of São Paulo

Edgar Carlin Ramirez


Roberto Casini

National Center for Atmospheric Research

Alberto Cellino

Istituto Nazionale di Astrofisica (INAF)

Rebeca Centeno

National Center for Atmospheric Research

Eswaraiah Chakali

National Central University

Dhurba Chhetri

St. Xavier's College

Kévin Dalmasse

National Center for Atmospheric Research

Jos de Boer

Universiteit Leiden

Alfred de Wijn

National Center for Atmospheric Research

Jose Carlos del Toro Iniesta

Instituto de Astrofísica de Andalucía (IAA-CSIC)

Mikhail Demidov

Institute of Solar-Terrestrial Physics

Yuanyong Deng

National Astronomical Observatories (CAS)

Tharcisyo Duarte

Federal University of Rio Grande do Norte

David Elmore

National Solar Observatory

Marianne Faurobert

University of Nice-Sophia Antipolis

Alex Feller

Max Planck Institute for Solar System Research

Walter Fernandez

University of Costa Rica

Silvano Fineschi

National Institute for Astrophysics

Luca Fossati

Argelander-Institut fur Astronomie

Francisco Frutos-Alfaro

University of Costa Rica

Marcial Garbanzo-Salas

University of Western Ontario

Kathleen Geise

University of Denver

Sarah Gibson

National Center for Atmospheric Research

Sanjay Gosain

National Solar Observatory

Jason Grunhut

European Southern Observatory

Heidy Gutiérrez

University of Costa Rica (CINESPA)

Yoichiro Hanaoka

National Astronomical Observatory of Japan

J. Patrick Harrington

University of Maryland

John Harvey

National Solar Observatory

Leonardo Herrera

Space Research Center (CINESPA)

David Hiriart

Instituto de Astronomía, UNAM

Jennifer Hoffman

University of Denver

Chat Hull

Harvard-Smithsonian Center for Astrophysics

Anylu Ibarra Garcia

Universidad Iberoamericana

Kiyoshi Ichimoto

Kyoto University

Sarah Jaeggli

Montana State University

Chunlan Jin

National Astronomical Observatories, China

Eric Josselin

LUPM - Université Montpellier II

Philip Judge

National Center for Atmospheric Research

Hyunnam Kim

Kyung Hee University

Lucia Kleint

FHNW Switzerland

Oleg Kochukhov

Uppsala University

Nagaraju Krishnappa

Max Planck Instiute for Solar System Research

Masahito Kubo

National Astronomical Observatory of Japan

Christoph Kuckein

Leibniz Institute for Astrophysics Potsdam (AIP)

Julien Lambert

Lund Observatory

Landi Degl'Innocenti

University of Florence, Italy

John Landstreet

University of Western Ontario

Agnès Lebre

University of Montpellier

Haosheng Lin

University of Hawaii

Bruce Lites

National Center for Atmospheric Research

Jamie Lomax

University of Oklahoma

Arturo Lopez Ariste


Vanessa López-Barquero

University of Wisconsin Madison

Theresa Lueftinger

University of Vienna

Antonio Mario Magalhães

Universidade de São Paulo  

Stephen Marsden

University of Southern Queensland

Alexander Martin

Armagh Observatory

Maria Jesus Martinez Gonzalez

Instituto de Astrofisica de Canarias

Valentin Martinez Pillet

National Solar Observatory

Justyn Maund

University of Sheffield

Paulo Miles-Páez

Instituto de Astrofísica de Canarias

Ivan Milic

Astronomical Observatory Belgrade

Michael Mishchenko

NASA Goddard Institute for Space Studies

Dimitry Monin

National Research Council Canada

Bruno Moura

Instituto Federal de Educação

Dennis Murillo

University of Costa Rica

Kanakatte Nanjundarao Nagendra

Indian Institute of Astrophysics

Coralie Neiner

LESIA, Paris-Meudon Observatory

David Orozco Suárez

Instituto de Astrofísica de Canarias

Judith Palacios

Universidad de Alcala

Enric Palle

Instituto de Astrofisica de Canarias

Adur Pastor Yabar

Instituto de Astrofísica de Canarias

Martin Pertenais

Paris Observatory

Pascal Petit

National Research Council Canada

Giuliano Pignata

Universidad Andrés Bello

Joseph Plowman

National Center for Atmospheric Research

Jacques Postel

University of Nice-Sophia Antipolis

Devaraj Rangaswamy

National Institute of Astrophysics, Optics and Electronics

Miguel Rojas

University of Costa Rica

Lisa Rosén

Uppsala University

Laurence Sabin

University of Guadalajara

Alberto Sainz Dalda

Stanford-Lockheed Institute for Space Research

Brigitte Schmieder

Observatoire de Paris (LESIA)

Neha Sharma

Aryabhatta Res. Inst. of Observational Sciences

Rohit Sharma

National Centre for Radio Astrophysics

Nataliia Shchukina

National Academy of Sciences

Archana Soam

Aryabhatta Research Institute of Observational Sciences (ARIES)

Sami Solanki

Max Planck Institute for Solar System Research

Robert Stencel

University of Denver

Jan Stenflo

ETH Zurich

Jiri Stepan

Astronomical Institute-Academy of Sciences

Michael Sterzik

European Southern Observatory

Leonard Strachan

Naval Research Laboratory, NRL

Janusz Sylvester

Space Research Center, RAS

Lela Taliashvili

Space Research Center (CINESPA)

Lucas Tarr

Naval Research Lab

Stefan Thonhofer

University of Graz (IGAM)

Adam Tichy

Astronomical Inst. at the Academy of Sciences

Steven Tomczyk

National Center for Atmospheric Research

Miguel A. Trinidad

Universidad de Guanajuato

Javier Trujillo Bueno

Instituto de Astrofísica de Canarias

Michiel van Noort

Max-Planck Institute for Solar System Research

Rebeca Vargas

Space Research Center (CINESPA)

Luis Eduardo Vieira

Instituto Nacional de Pesquisas Espaciais

Jorick Vink

Armagh Observatory

Dongguang Wang

National Astronomical Observatories, CAS

Jingxiu Wang

National Astronomical Observatories, China

John Wisniewski

University of Oklahoma

Tristan Wolfe

University of Denver



Andres Asenio Ramos

Instituto de Astrofisica de Canarias

Roberto Casini

National Center for Atmospheric Research

Yuanyong Deng

National Astronomical Observatories (CAS)

Jason Grunhut

European Southern Observatory

John Harvey

National Solar Observatory

Jennifer Hoffman

University of Denver

Kiyoshi Ichimoto

Kyoto University Hida Observatory

Oleg Kochukhov

Uppsala University

John Landstreet

University of Western Ontario

Haosheng Lin

University of Hawaii

Arturo Lopez Ariste


Antonio Mario Magalhães

Universidade de São Paulo

Valentin Martinez Pillet

National Solar Observatory

Francois Menard

LESIA Obseravtoire de Paris-Meudon

Michael Mishchenko

NASA Goddard Institute for Space Studies

Kanakatte N. Nagendra

Indian Institute of Astrophysics

Pascal Petit

National Research Council Canada

Kiyoto Shibasaki

National Astronomical Observatory

Daphne Stam

Technical University of Delft

Jiri Stepan

Astronomical Institute-Academy of Sciences

Michael Fritz Sterzik

European Southern Observatory

Javier Trujillo Bueno

Instituto de Astrofísica de Canarias








Stefano Bagnulo

Armagh Observatory

Landi Degl'Innocenti

University of Florence, Italy

Michael Mishchenko

NASA Goddard Institute for Space Studies

Sami Solanki

Max Planck Institute for Solar System Research

IAU Poster

Poster IAU


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