SCAR AAA 2021

Session

Talks 2

Sep 8, 2021, 12:30 PM

Conveners

Talks 2: Solar and Upper Atmosphere

• Jennifer Cooper

5. Sky brightness evaluation at Concordia Base, Antarctica

Alessandro Liberatore (Istituto Nazionale di Astrofisica (INAF))

9/8/21, 12:30 PM

The study of the sky characteristics plays a fundamental role for many astrophysical experiments and on-ground observations. In the field of solar physics, in particular for the observation of the solar corona, it is required to have a very low sky brightness value.
Currently the only place on Earth with the sky characteristics that allow a continuous coronagraphic measurements is at the...

10. Progress Report of Antarctic 30cm submm telescope

Nario Kuno

9/8/21, 12:45 PM

We have developed a 30-cm submm telescope which was designed to be operated in Antarctica (Ishii et al. 2014). We are planning to transport the telescope to Dome Fuji in Antarctic plateau to make a survey of the Galactic plane in CO(J=4-3) and $[$CI$](^3P_1-^3P_0$). $[$CI$](^3P_1-^3P_0$) is a good tracer of diffuse molecular gas, while CO(J=4-3) is a good tracer of warm and dense molecular gas...

19. Response Functions of a Semi-Leaded Neutron Monitor from Latitude Surveys during 2018 - 2020

Achara Seripienlert (National Astronomical Research Institute of Thailand (NARIT), Chiang Mai 50180, Thailand)

9/8/21, 1:00 PM

We have developed a mobile neutron monitor (“Changvan”) with three neutron counters to investigate cosmic ray spectral variations via ship-borne latitude surveys. Because Earth’s magnetic field excludes cosmic rays below the local geomagnetic cutoff rigidity, which depends on magnetic latitude, the count rate due to atmospheric neutrons from cosmic ray showers vs. cutoff rigidity (i.e., the...

24. The micrometeorite flux at Dome C (Antarctica) with the CONCORDIA collection

Julien Rojas Arispe (IJCLab/Université Paris-Saclay)

9/8/21, 1:15 PM

The flux of extraterrestrial material on Earth is dominated by sub-millimeter particles, however the mass distribution and absolute value of this cosmic dust flux at the Earth surface is still uncertain due to the difficulty to monitor both the collection efficiency and the exposure parameter (i.e. the area-time product in m$^2$.yr). Thanks to the exceptional conditions encountered in...

21. RESOURCE Radio Sciences Research on AntarCtic AtmosphEre

Lucilla Alfonsi (INGV)

9/8/21, 1:30 PM

We report the establishment of a Programme Planning Group for developing a SCAR (Scientific Committee on Antarctic Research) Scientific Research Programme (SRP) entitled “Radio Sciences Research on AntarCtic AtmosphEre” (RESOURCE). The proposed SRP aims to gather the communities that investigate the polar atmosphere, with particular reference to Antarctica but with a bi-polar perspective, by...

34. A proxy for decadal solar cycles from AD 1600 to 1900 based on nitrate concentrations in a Dome Fuji (Antarctica) ice core

Prof. Yuko Motizuki (RIKEN)

9/8/21, 1:45 PM

Ice cores yield information about astronomical phenomena as well as information about climate changes of the past. We applied time-series analyses to variations in nitrate ion concentrations in one segment of an ice core drilled at the Dome Fuji station in East Antarctica, corresponding to the historical period from AD 1600 to 1900. Our analyses revealed clear evidence of periodicities of ~ 11...