Division A Meeting 2024 | IAU GA XXXII
Fundamental Astronomy / Astronomie Fondamentale
Cape Town, Republic of South Africa, 9 & 12 August 2024
Rationale: The purpose of this Division Days meeting is to provide a summary of recent and relevant results for our Division A Fundamental Astronomy – Astronomie fondamentale. In addition to presentations of PhD prizes and general contributions, some sessions will give focus on Lunar standards and for the Commissions and WGs to meet.
Researchers can present their recent results and work through this two days venue in the form of an oral or poster presentation.
SOC: D. Hestroffer (DP, France), B.A. Steves (DVP, United Kingdom), N. Zacharias (Advisor, United States), F. Bernardi (Italy), C. Efthymiopoulos(Greece), C.S. Jacobs (United States), Z.M. Malkin (Russian Federation), S.G. Stewart (United States), M. Assafin (Brazil), A.G.A. Brown (Netherlands), A.J. Maciejewski (Poland), E. Pilat-Lohinger (Austria), V. Sidorenko (Russian Federation), Susan Stewart (United States), Brent Achinal (United States).
Programme
Booklet 2024 will be available here soon! in the meantime, and to join the sessions online, see also:
https://virtual.oxfordabstracts.com/#/event/5099/program?program&date=%222024-8-9%22
https://virtual.oxfordabstracts.com/#/event/5099/program?program&date=%222024-8-12%22
https://astronomy2024.org/
https://virtual.oxfordabstracts.com/#/event/5099/
Times in SAST local time = UTC+2h
Friday 9 | 10:00–12:00 + 13:30–15:30
room: 2.61 - 2.63
https://zoom.us/j/92740742439?pwd=ax48OLkNbb5WwdoOHdLwftaRJLqXHR.1
10:00–10:30 Morning ePosters (exhibition hall)
10:30–12:00 DivA-1
Session 1a — Division.A Days introduction
10:30 D. Hestroffer — Division days opening [pdf]
Session 1b — PhD prizes talks (chair D. Hestroffer)
10:40 Irene De Blasi (2022) Dynamics and stability in Celestial Mechanics: from galactic billiards to Nekhoroshev estimates. [3216 on-site] [pdf]
11:08 Hao Ding (2022 Honorary mention from the Division) Enhancing the use of galactic neutron stars as physical laboratories with precise astrometry [3215 on-line] [pdf]
Session 1c — Celestial Mechanics & Dynamical Astronomy (chair D. Hestroffer)
11:36 A. Ibraimova —Study of the small body dynamics with variable mass in the presence of reactive forces in the framework of the restricted three-body problem with variable masses. [1002 on-line] [pdf]
11:42 B. Steves —Central configurations in the general four body coplanar problem with different masses. [2935 withdrawn]
12:00 Lunch
13:30–15:00 DivA-2
Session 2 - Stars & The Milky Way (chair N. Zacharias)
13:30 P. Panuzzo (invited) — Gaia BH3: a 33 M☉ dormant BH discovered in Gaia preliminary astrometry. [3192 on-site] [pdf]
14:00 Z. Mguda — Mass measurement of a Local group dwarf spheroidal galaxy using Gaia EDR3. [971 withdrawn]
14:12 MT. Crosta — The Milky Way as Einstein's paradigm in the Gaia era. [2486 on-site] [pdf]
14:24 W. Zhou — Analysis of Tropospheric Delay Mapping Functions with co-located WVRs on VLBI Stations. [1259 on-site] [pdf]
14:36 H. Lee — Study on the Angular Distance between Celestial Bodies in Korean Astronomical Records during the 11-18th Centuries. [203 on-site] [pdf]
14:48 S. Bell — Special Configurations of Planets. [2910 on-site] [pdf]
15:00 –15:30 Afternoon ePosters (exhibition hall)
Monday 12 | 10:00–12:00 + 13:30–17:00
room: 2.61 - 2.63
https://zoom.us/j/92740742439?pwd=ax48OLkNbb5WwdoOHdLwftaRJLqXHR.1
10:00–10:30 Morning ePosters (exhibition hall)
10:30–12:00 DivA-3
Session 3 - Surveys and Rotation of the Earth (chair A. Escapa & D. Hestroffer)
10:30 J. Ivezic (invited) — Rubin's LSST as an astrometric and a photometric survey. [3179 on-site] [pdf]
11:00 X. Wang — Nonlinear Terrestrial Reference Frame and EOP Determination Based on Singular Spectrum Analysis. [437 on-site] [pdf]
11:12 J. Nastula — Gravimetric excitation of polar motion from SLR+GRACE/GRACE-FO hybrid solutions. [882 on-site] [pdf]
11:24 C. Huang — Origins of the intradecadal oscillations in length-of-day and implications. [1487 on-site] [pdf]
11:36 A. Escapa — An updated value of the dynamical ellipticity of the Earth. [1125 on-site] [pdf]
11:48 W. Tian — Development of lunar ephemeris with an Earth tide model compatible to the IERS conventions. [2158 on-site] [pdf]
12:00 Lunch
13:30–15:00 DivA-4
Session 4 - Lunar standards (chair S. Stewart & B. Archinal)
13:30 S. Stewart — Recommendations for international standards for cislunar PNT. [3194 on-site] [pdf]
13:55 B. Archinal — The Cartographic Lunar Reference Frame. [2883 on-line] [pdf]
14:05 V. Viswanathan — On the State of the Lunar Orientation: from Geological History to Modern-day Times. [3241on-line] [pdf]
14:25 S. Klioner — Time on the Moon in the context of various relativistic time scales in the Solar System. [3240 on-line] [pdf]
14:40 M. McClernan — Proposed Grid System and Projected Coordinate Reference Systems for Lunar Surface Navigation and The Artemis Missions. [2512 on-line] [pdf]
14:50 General discussions —. [hybrid]
15:00 –15:30 Afternoon ePosters
15:30–17:00 DivA-5
Session 5 - Commissions & Working Groups report (chair D. Hestroffer & A. Escapa)
15:30 T. Wilmot — report WG SOFA. [on-site] [pdf]
15:40 F. Arias — report WG TMS Time Metrology Standards. + Note on "Evolution towards continuous UTC". [on-line] [pdf]
15:55 B. Archinal — report WGCCRE Cartographic Coordinats & Rotation Elements. [on-line] see also Division F-4 [pdf]
16:05 A. Ivantsov — report WG GBAST. [on-line] [pdf]
16:15 C.S. Jacobs — report CA1 Astrometry. [on-site] [pdf]
16:25 A. Escapa — report CA2 Rotation of the Earth. + Note on IAU Symp. 401 "Advancing Reference Systems, Ephemeris, and Standards". [on-site] [pdf]
16:40 S. Stewart — report CA3 Fundamental Standards + D. Soderblom Toward resolution on galactic coordinates system [on-site] [pdf]
--:-- report CA4 CMDA - see report on IAU publicaitons (to come)
--:-- report CX2 Solar System Ephemerides - see report in Division F-4
--:-- report WG NEOs - see talk in Division F-1
17:00 End of Division Days
Posters
https://virtual.oxfordabstracts.com/#/event/5099/program?session=123040&program&date=%222024-8-9%22
118 A study on the periodic orbits in the Copenhagen problem with non spherical primaries
Dr. Om Prakash Meena []
801 The prospection of an astronomical site to build the first USMS university observatory
Saadia Oujaoura [on-line]
920 Calculating the trajectory of a gram-scale interstellar spacecraft moving at relativistic speeds
Mr. Nicky Ishaak []
989 A new post-Newtonian long-term precession model for the Earth
Kai Tang [on-site]
998 Comparative Analysis of the Parameters of Pulsars with Breaking Indices n<0 and n>0
Dr Chika Onuchukwu []
1052 Exploring the impact of a priori errors on dUT1 estimations from intensive VLBI sessions
Clara Pérez [on-site]
1067 Improving the geodetic budget closure by combining geophysical excitations of polar motion from different models of atmospheric and oceanic angular momentum
Dr Justyna Śliwińska-Bronowicz [on-site]
1471 Cryospheric Excitation on the Earth’s Chandler Wobble
Chengli Huan [on-site]
2132 THE ASTROPHYSICAL DYNAMICS AND EARTH’S CLIMATE CHANGE
Mr Kaguamba Minjire []
2227 Investigating Merger-Induced Asymmetries in HI Spectra of Nearby Galaxies: A Full ALFALFA Sample Analysis
MISS YANDISA PEKO []
2603 New paradigm of close approach analysis of NEOs: likelihood of close encounter
Dr. Dmitrii Vavilov [on-site]
2803 Numerical Standards for Fundamental Astronomy Current Best Estimates
Dr Susan Stewart []
2977 UKIRT Hemisphere Survey Status, Details and Data Access
Justice Bruursema []
3127 Standards of Fundamental Astronomy
Miss Antonia Wilmot [on-site]
3197 Validation of KSA-Geoid by vertical deflection Observations
OTHMAN ALRUBAYYI []