Costantino Sigismondi

Fax:	+ 39 (0)6 4454992

e-mail:	sigismondi @ icra.it costantino.sigismondi @ gmail.com
URL:	http://www.icra.it/solar

2000-Present	Solar Physics: Accuracy of eclipse - Baily beads method in the determination of corrections to mean radius, in collaboration with ICRA, ICRANet, IOTA, IRSOL Locarno-Switzerland, Laboratoire FIZEAU Universite' de Nice-Sophia Antipolis and Sapienza University of Rome. The web site with all activity reports is www.icra.it/solar The eclipses under study are these from 2005 to 2010 with more than 600 Baily beads identified. Both Watts (photographic atlas, 1962) and Kaguya (satellite data, 2009) lunar profiles are used with ephemerides up to relativistic corrections. The goal is the 0.1-0.05 arcsec of accuracy on the solar diameter from these measurements, in order to reveal variations of the solar diameter with respect to the standard value of 1919.26 arcsec at 1 AU. Meridian astrometry is tested at the great Meridian line of S. Maria degli Angeli in Rome, and it is applied at the IRSOL solar telescope of Locarno under the project CLAVIUS of drift-scan measurements of solar diameter at subarcsecond seeing.
2003-Present	Organizer of annual conferences on Gerbert d'Aurillac
2002-Present and 1996	Professor of Physics at Armellini and Volta Institute of Rome. Prof. of Catholic Religion at 28th ITC Institute of Rome
1994-2000	Fermions in Cosmology at ICRA

2008	SIC, Scientific Instruments Commission
2006	Italian Physical Society; American Physical Society and Italian Society of Geography
2002	Euroscience
2000	IMO, International Meteor Organization. Code SIGCO
1999	AAVSO, American Association of Variable Stars Observers.Code SGQ

Invited and Contributed Talks complete list

2010, New Haven, Yale University, Ground-based High Resolution Measurements of Solar Diameter, invited talk 4.11.2010
2010, Paris, Institute d�Astrophysique, The solar limb during eclipses: Flash Spectrum Region and Baily beads, invited talk 30.9.2010
2010, York, University, The solar limb during eclipses: Flash Spectrum Region and Baily beads, XXIX ESOP meeting 22.8.2010
2010, Ventimiglia, Villa Hambury, Methods to measure the solar diameter, 2nd Galileo-Xu GuangQi Meeting, 16.7.2010
2010, Buenos Aires, IAFE, Generalities on Solar Diameter Measurements: problems and tasks, invited talk 7.6.2010
2010, Bukowiec, Poland, Sylvester II and Astronomy, Sylvester II Observatory Inauguration Day, invited talk 21.5.2010
2010, Paris, France, Precision and Harmony in Gerbert's Astronomy, Universite' Paris VII- Diderot, invited talk 6.5.2010
2009, Christchurch, New Zealand, Measuring solar diameter with Baily beads: from Watts to Kaguya's lunar profiles invited talk, 15-18.12.2009
2009, Il Cairo, Egypt, IAGA2 Meeting, Solar diameter variations from recent eclipse data (2005-2008) invited talk, 4-8.12.2009
2009, Niepolomice, Poland, XXVIII ESOP Meeting 29.8-4.9, Workshop on solar diameter measurements, invited chairman
2009, Seoul, South Korea, Sejong University, 11 June 2009, Galileo and Sylvester II, invited talk.
2009, Nice, France, Astronomie et Astrophysique dans son developpement historique, 25 may Campus St. Jean d'Angely, invited talk.
2008, Nizza, Francia, Les origines de l'Univers: entre cosmologie et astrophysique, 15 october, rue St. Francis de Paule Salle de Conference des Dominicains, invited talk.
2008, Lisboa, Portugal, Astrometric recognition of the Clementine gnomon and its deviation from celestial North, and Teaching astronomy with the clementine gnomon: measuring sun radius, obliquity, nutation and eccentricity of ecliptic, XXVII Symposium of the Scientific Instrument Commission at the Museum of Science, University of Lisbon (16-21 September 2008)
2008, Drebach-Germany, Measuring Solar Diameter with Eclipses, XXVII ESOP meeting, invited talk. Aug. 29-31 (2008).
2008; Taipei-Hualien, Taiwan, Measures of Solar Diameter With Eclipses: Data Analysis, Problems and Perspectives, in Light from Dark Universe V Sino-Italian Workshop, May 28-June 1, 2008.
2007 Pescara, Italy, September 3-7, Meteotsunami detection in Adriatic and Tyrrenian Sea, XXIV ICRANetwork Workshop.
2007 Pescara, Italy, June 25-30, 2007, Relativistic Corrections to Lunar Occultations, 10th Italo-Korean Meeting on Relativistic Astrophysics.
2006 New Haven, CT Yale University Astronomy dept., Nov. 1 h. 3 pm, Solar Diameter Measurements with Transits and Eclipses, invited talk.
2006, Cairo, Egypt, April 1-4, 2006, Solar Radius in 2005 and 2006; Testing Pinhole Solar Monitor with the Meridian Line of Santa Maria degli Angeli in Rome, IAU 233 Symposium Solar Activity and its Magnetic Origin.
Daejeon, South Korea, Korean Astronomical Science Institute - Solar and Space Weather Research Group July, 29, 2005 Accuracy of Solar Diameter Measurements with Eclipses and Transits, invited talk
2003 X Marcel Grossmann Meeting on General Relativity Rio de Janeiro, July 22-27, 2003, Long-term analysis of variable star luminosities: from Eddington to present time; Precession in Relativity.
2002 Hubble Space Telescope Science Heritage Workshop, Chicago April 2-5 2002, Correlation of Maxima in Long-Period Variable Stars; Variability of Solar-Type Stars and of the Sun.
2002 New Views of the Moon, Europe Future Lunar Exploration, Science Objectives, and Integration of Datasets, Berlin, Germany January 18-22, 2002, The Luminous Efficiency of Hypervelocity Impacts on the Moon, with David W. Dunham.
2001 Yale University Astronomy Department Colloquia, Yale New Haven September, 6 2001 Research Projects in Solar Physics invited talk.
2001 Trinity School, New York City, May, 8 2001 invited talk on Recent Discovery in Astrophysics and didactic demonstrations on pinhole astronomy.
2001 The 90th Spring AAVSO Meeting. Madison, Wisconsin May 3-6, 2001. Mira and the Star of Bethlehem with Dorrit Hoffleit, presented by Janet Mattei.
1999 ESO Colloquium, European Southern Observatory, Santiago-de-Chile, Chile, June, 9 1999, invited talk The Stability of Dark Matter Density Fluctuations in Large Scale Structure Formation.
1999 CECS, Centro Estudios Cientificos de Santiago, Santiago-de-Chile, June 8 1999, invited talk, The Kinematical and Dynamical Limits of Free Streaming Scale of Fermions in Cosmology .
1999 Fermi National Accelerator Laboratory, Batavia, Illinois U.S., May 26 - 29, David N. Schramm Memorial Symposium Inner Space/Outer Space II, Standard Candles Masses in Large Scale Structure Formation.
1999 International Workshop on Dynamics and Structure of Galaxies, Venezia, Italy, March 18-19 Dynamics of Building Blocks of Galaxies in the Gravitational Instability Scenario.
1997 Workshop Views on Distance Indicators S. Agata sui due Golfi, Napoli, Italy, September 2-6, 1997, The Galaxy Distribution and the Hubble Law in a Neutrino Dominated Universe.
1997 VIII Marcel Grossmann Meeting on General Relativity, Jerusalem, Israel June 22-27, 1997 On the Power Law Dependence of the Average Density of the Galaxies in the Universe.
1996 Italian-Russian Meeting IKI-ICRA, Rome University La Sapienza, Italy, October 6-10, 1996 Dark Matter in Clusters of Galaxies.
1995 Convegno dell'Astrofisica Romana, Rome, Italy, October 15-16, The Observation of Clusters of Galaxies with SAX X-ray Telescopes.
1995 IV Meeting Italian-Korean on Relativistic Astrophysics, Rome, Gran Sasso, Pescara, Italy, July 9-15, 1995, Perspectives on the Observation of Clusters in X-ray Band with SAX (X-ray Astronomy Satellite).