Scientific Programme

IAUS 340 Programme

Scientific Program (updated 14th Feb 2018)


Sunday, 18th February 2018

Registration opens at 2.30 pm

Welcome Reception at 7.00 pm


Monday, 19th February 2018

Session 1: Velocity Fields in the Convective Zone [Chair: Siraj Hasan]

9:00 – 9:45 Inauguration
9:45 – 10:15 Data and Methods for Helioseismology Aaron C Birch
10:15 – 10:45 New constraints on interior convection from measurements of normal-mode coupling Shravan Hanasoge
10:45 – 11:00 Probing solar-cycle variations of magnetic fields in the convective zone using meridional flows Chia-Hsien Lin
11:00 – 11:30 Tea Break
11:30 – 12:00 Small-scale flows and the solar dynamo Robert Cameron
12:00 – 12:30 Solar Large-scale flows and their variations Sarbani Basu
12:30 – 12:45 Torsional oscillations: a tool to map magnetic field amplification inside the Sun Sushant S. Mahajan

12:45 – 2:00 Lunch Break

Session 2. Most widely used Indices of Solar Cycle - Magnetic Field and Sunspot Number [Chair: Alexi Peptsov]

2:00 – 2:30 A Century of Solar Magnetograms Aimee Norton
2:30 – 2:45 Long-term Measurement of the Solar Magnetic Field J Todd Hoeksema
2:45 – 3:00 Kyiv monitoring program of spectral line variations with 11-year cycle. Quiet Sun Nataliia Shchukina
3:00 – 3:15 Long-term stellar magnetic field study at the Crimean Astrophysical Observatory Dilyara Baklanova
3:15 – 3:30 The long term variation of the effective magnetic field of the active star epsilon Eridani Cesare scalia
3:30 – 4:30 Extended Tea Break/Poster Session
4:30 – 5:00 Sunspot number datasets : status, divergences and unification Frédéric Clette
5:00 – 5:15 MDI + HMI: 22 Years of Full-Disc Imagery from Space Richard Bogart
5:15 – 5:30 Variations in Ca-K line profiles and normalized Intensity as a function of latitude and solar cycle during the 20th century: Implication to Meridional flows Jagdev Singh
5.30 – 5.45 Seismic signatures of magnetic activity in solar-type stars observed by Kepler Angela R. G. Santos
5.45 – 6.00 A comprehensive variability study of the complex corona of Capella Lalitha Sairam

Tuesday, 20th February 2018

[Chair: Todd Hoeksema]


9:30 – 10:00 Uncertainty, Under-counting, and Survey Incosistency: Overlooked Issues While Working With Sunspot Area Data Andres Munoz-Jaramillo
10:00 – 10:15 Un-interrupted Sun-as-a-star Helioseismic Observations over Multiple Solar Cycles Kiran Jain
10:15 – 10:30 Two populations of sunspots Aleksandra Anatolyevna Osipova
10:30 – 10:45 Correlation of the New Sunspot Number and Geomagnetic aa Index in the Years 1900-2013 Marielle Eduardo
10:45 – 11:00 Zurich Sunspot Groups, Flaring Activity and their Temporal Variations Ali Kilcik
11:00 – 11:30 Tea Break

Session 3. Indices of Solar Cycle from Photosphere to the Heliosphere [Chair: Nandita Srivastava]

11:30 – 12:00 Long-term variations in the global heliosphere M J Owens
12:00 – 12:15 CaII K spectroheliogram time series from Kwasan-Ikoma observatories, Kyoto University Takahito Sakaue
12:15 – 12:30 Ca II K spectroheliograms for studies of long-term changes in solar irradiance Theodosios Chatzistergos
12:30 – 12:45 Sunspot group tilt angles from drawings for cycles 19-24 Emre Isik

12:45 – 2:00 Lunch Break

[Chair: Federic Clette]


2:00 – 2:30 Historical and modern full disk Ca II K observations: a resource for long-term studies of solar activity and variability Ilaria Ermolli
2:30 – 3:00 Coronal mass ejections as a new indicator of the active Sun Nat Gopalswamy
3:00 – 3:15 Generation of Carrington maps and automated feature detection from Ca II K spectroheliograms of Kodaikanal Solar Observatory Subhamoy Chatterjee
3:15 – 3:30 Variable nature of differential rotation profile of the Sun: A study using Kodaikanal digitized white-light data archive Sudip Mandal
3:30 – 4:30 Group Photo session and Extended Tea Break/Poster Session
4:30 – 5:00 Automated Detection Methods for Solar Activities and an Application for Statistic Analysis of Solar Filament Qi Hao
5:00 – 5:15 On the Sun's oscillations during its magnetic cycle Lionel Bigot
5:15 – 5:30 Sunspot data collection and archiving at Specola Solare Ticinese Renzo Ramelli
5:30 – 5:45 Evolution of structures with an open magnetic flux over a hundred years Andrei Tlatov
5:45 – 6:00 Quiet Flows the Solar Wind: Long-term Trends in Solar Photospheric Fields and Solar Wind Micro-Turbulence Ananthakrishnan

6:30 – Departure for dinner at Chokhi Dhani

Wednsday, 21st February 2018

Excursion to Amber Fort and Jantar Mantar 8.00 – 1.30


1:30 – 2:30 Lunch Break

[Chair: Ilaria Ermolli]


2.30 – 2:45 Long term study of the solar filaments from the Synoptic Maps as derived from H Spectroheliograms of Kodaikanal Observatory Manjunath Hegde
2.45 – 3:00 Synoptic Solar Chromosphere and Photosphere Observations at San Fernando Observatory for a Complete Magnetic Cycle Debi Prasad Choudhary
3:00 – 3.15 Reconstruction of solar activity according to the data of centenary observations Kseniya Andreevna Tlatova

Session 4. Total Solar Irradiance and Spectral Solar Irradiance [Chair: Ilaria Ermolli]

3:15 – 3:45 The Long-Term TSI Data Record Greg Kopp
3:45 – 4:00 SOLAR/SOLSPEC: new solar reference spectrum 165-3000 nm and 9 years observations of solar spectral ultraviolet irradiance from the ISS Luc Damé
4.00 – 4.30 Tea Break
4.30 – 5.00 Ultraviolet Solar Spectral Irradiance Variation on Solar Cycle Timescales Martin Snow
5.00 – 5.30 TSI and SSI variations with solar magnetic cycle: reconstruction and physics Natalie Krivova
5.30 – 5.45 SOLARSEG: Correlation and periodicity of the EUV irradiance obtained from the daily segmentation of EUV images over a 7-years period Gabriel Giono
5:45 – 6:00 Variation of the photospheric temperature gradient with magnetic activity Marianne Faurobert

Thursday, 22nd February 2018

Session 5. Solar - Stellar Connection [Chair: Gerry Doyle]

9:30 – 10:00 A Stellar Perspective on the Magnetic Future of the Sun Travis Metcalfe
10:00 – 10:30 Brightness variations of solar-type stars: available datasets and recent achievements Alexander Shapiro
10:30 – 10:45 Statistical Study of Solar White-light Flares and Comparison with Superflares on Solar-type Stars Kosuke Namekata
10:45 – 11:00 Does the Sun behave unusually for a Sun-like star? Veronika Witzke
11:00 – 11:30 Tea Break
11:30 – 12:00 Measuring stellar magnetic fields and proxies of magnetic activity Ansgar Reiners
12:00 – 12:15 A novel method to obtain stellar rotational periods Eliana Maritza Amazo Gómez
12:15 – 12:30 Active ultra-fast rotators KIC 6791060 and LO Pegasi: Starspot modulation, surface differential rotation, and flares Subhajeet Karmakar

12:30 – 2:00 Lunch Break
2:00 – 2:15 The flaring activity of M dwarfs Huiqin Yang
2:15 – 2:30 Phase difference between long-term magnetic feature activity and flare activity of solar-type stars Han He

Session 6. Solar behavior over centuries [Chair: Greg Kopp]

2:30 – 3:00 Extreme Solar Events K Shibata
3:00 – 3:15 The State of the Solar Wind and Magnetosphere During the Maunder Minimum Pete Riley
3:15 – 3:30 Solar Spectral Irradiance over 9 Millennia from a Multi-isotope Composite Series Chi Ju Wu
3:30 – 3:45 Long-term optical monitoring of the solar atmosphere in Italy Salvo Guglielmino
3:45 – 4:00 Periodic and quasi-periodic activity in the 100-years of Kodaikanal sunspot data Tanmoy Samanta
4:00 – 6:00 Extended Tea Break/Poster Session

6:30 – Banquet at Taj Jai Mahal Palace

Friday, 23rd February 2018

Session 7. Solar and Stellar Dynamo [Chair: Andres Lagg]

9:30 – 10:00 Dynamo Processes Constrained by Solar and Stellar Observations María Weber
10:00 – 10:30 State-of-art of kinematic modeling solar cycle Jie Jiang
10:30 – 10:45 The Sun's polar magnetic field: datasets, proxies and theoretical issues Arnab Rai Choudhuri
10:45 – 11:00 Long term Variability of Solar Cycle in the Babcock-Leighton dynamo framework Bidya Binay Karak
11:00 – 11:30 Tea Break
11:30 – 12:00 MHD Models of Solar and Stellar Dynamos with magnetic cycles Antoine Strugarek
12:00 – 12:30 State-of-art of MHD modeling solar cycle Maarit Kapyla
12:30 – 12:45 Kinematic and magnetic coherent structures in turbulent solar dynamo Abraham C.-L. Chian
12:45 – 1:00 Turbulent diffusion in the photosphere as observational constraint on dynamo theories Valentina Abramenko

1:00 – 2:00 Lunch Break

Session 8. Predictions and Predictability of Solar Cycle [Chair: Jie Jiang]

2:00 – 2:30 Forecasting phase-by-phase progression of a solar cycle using data assimilation and machine learning Masumi Dikpati
2:30 – 2:45 Predicting Solar Cycle 25 Using a Coupled Surface Flux Transport and Dynamo Model Prantika Bhowmik
2:45 – 3:00 A theoretical model of the variation of the meridional circulation with the solar cycle Gopal Hazra
3:00 – 3:30 The Physics of Solar Cycle Predictability Dibyendu Nandi
3:30 – 4:30 Extended Tea Break/Poster Session
     
4:30 – 5:00 Rogue active regions and the inherent unpredictability of the solar dynamo Kristof Petrovay
5:00 – 5:15 Solar Predict: a novel 4-D Var method for predicting the 11-yr solar cycle Sacha Brun
5:15 – 6:00 Closing summary and closing remarks Dipankar Banerjee
6:30 Public Lecture : Our life-giving star, the Sun and its dark side Nat Gopalswamy

List of Posters