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Dr Lorenzo Mele (Sapienza University of Rome)08/09/2021, 11:00
COSMO (COSmic Monopole Observer) is a ground based differential Fourier transform spectrometer, to be operated at Dome-C, Antarctica, which aims at measuring the isotropic y-distortion of the Cosmic Microwave Background (CMB).
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The current upper-limit on $y$ is dated back to 1990 by COBE-FIRAS to $|y|<1.5 \cdot 10^{-5}$.
COSMO will measure the absolute brightness of the sky in the 120-280GHz... -
Elisabetta Marchitelli (Sapienza, University of Rome)08/09/2021, 11:15
The COsmic Monopole Observer (COSMO) is a pathfinder, ground-based experiment, designed for the detection of the isotropic $y$-distortion of the Cosmic Microwave Background (CMB). Deviations from a pure blackbody are expected as an evidence of all the interactions that CMB photons undergo along the thermal history of the Universe. Their observation provides an insight into processes involving...
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william jones (Princeton University)08/09/2021, 11:30
Spider is a CMB polarimeter designed for the Antarctic Long Duration Balloon platform. Spider has completed one flight of the two-flight program. In the first flight, Spider has mapped the astrophysical linear polarization over about 10% of the full sky, with significantly greater sensitivity than Planck HFI in the same region. We report limits to the cosmological B-mode polarization that...
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Dr Benjamin L. Schmitt (Harvard-Smithsonian Center for Astrophysics)08/09/2021, 11:45
Measurement of the polarized Cosmic Microwave Background (CMB) over the past few decades has enabled precision probes of the evolutionary history, composition, and dynamics of the primordial Universe. Next-generation CMB experiments will extend this scientific reach, allowing for tests of the inflationary theory of the early Universe, driven through constraints on the tensor-scalar ratio “r”...
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Elenia Manzan (University of Milan Statale)08/09/2021, 12:00
In this work I present the design and forecasted performance of the multimoded feed-horns system of the COSmic Monopole Observer (COSMO). COSMO is a pathfinder experiment that aims at measuring the isotropic y-type spectral distortion of the Cosmic Microwave Background from Dome-C, Antarctica. The current upper limit on the y-distortion is $<10^{-5}$ (COBE-FIRAS and TRIS).
COSMO exploits a...
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Alessandro Liberatore (Istituto Nazionale di Astrofisica (INAF))08/09/2021, 12:30
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.
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Currently the only place on Earth with the sky characteristics that allow a continuous coronagraphic measurements is at the... -
Nario Kuno08/09/2021, 12:45
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...
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Achara Seripienlert (National Astronomical Research Institute of Thailand (NARIT), Chiang Mai 50180, Thailand)08/09/2021, 13:00
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...
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Julien Rojas Arispe (IJCLab/Université Paris-Saclay)08/09/2021, 13:15
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...
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Lucilla Alfonsi (INGV)08/09/2021, 13:30
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...
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Prof. Yuko Motizuki (RIKEN)08/09/2021, 13:45
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...
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Lu Lu (University of Wisconsin–Madison)09/09/2021, 11:00
The IceCube Neutrino Observatory is the largest neutrino telescope in the world and uses clear Antarctic ice to detect neutrinos and cosmic rays over an incredibly wide range of energies. The multifaceted experiment runs with over 99% uptime and has been taking high-quality data for over a decade. In my talk I will give a brief overview of IceCube science including real-time efforts...
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Prof. Kael Hnason (UW-Madison)09/09/2021, 11:15
The IceCube Neutrino Observatory at the South Pole is the leading facility
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worldwide for scientific exploration in the field of neutrino astrophysics.
A more densely instrumented infill array, IceCube DeepCore, was added during
construction to lower IceCube's energy threshold where it could exploit the
massive volume of exceptionally clear ice at the bottom of IceCube to... -
Carsten Rott (University of Utah)09/09/2021, 11:30
IceCube-Gen2 is a planned extension of the IceCube Neutrino Observatory at the geographic South Pole. Gen2 is optimized to search for sources of astrophysical neutrinos from TeV to EeV energies. IceCube-Gen2 builds on a successful decade of scientific observations with IceCube. The observatory will utilize optical sensor modules integrated into the deep ultra-clear Antarctic ice for the...
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Roxanne Turcotte (Karlsruhe Institute of Technology)09/09/2021, 11:45
The IceCube Neutrino Observatory is a Cherenkov light detector located deep in the Antarctic ice. A cosmic-ray detector at the surface, named IceTop, composed of Ice-Cherenkov tanks complements the in-ice detector. A Surface Array Enhancement for the IceCube Neutrino Observatory is planned to be deployed in the near future at the South Pole. It will consist of 32 hybrid stations positioned...
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Eric Oberla09/09/2021, 12:00
The low expected flux of cosmic neutrinos drives the need for neutrino experiments with large exposures and lower thresholds. Radio experiments can achieve such large exposures by taking advantage of the coherent broadband radio emission resulting from ultra-high-energy (E>10^16 eV) neutrino interactions. In this talk, I will review the status of existing Antarctic radio experiments and...
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Pradiphat Muangha (Mahidol University)09/09/2021, 12:15
Neutron monitors (NMs) are ground-based detectors of the secondary particles produced in atmospheric cascades from primary cosmic rays. Using neutron time-delay data from neutron monitors (NMs), we can extract the leader fraction, L, of neutron counts that do not follow a previous neutron count in the same counter tube due to the cosmic ray shower. L is the inverse of the neutron...
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Jennifer Cooper09/09/2021, 12:45
This presentation will broadly cover the impacts of the COVID-19 pandemic on students and early career researchers (ECRs) in the Antarctic and Astronomical fields over the past 1.5 years. I will highlight the obstacles many have faced such as graduation/research delays, as well as some new policies that have been introduced that improve access and collaboration. Finally, I will briefly discuss...
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Peng Jiang (Polar Research Institute of China)09/09/2021, 13:00
Increasing space debris has seriously threatened the safety of spacecraft of various countries. The Pole regions are the most densely distributed regions of Low-Earth orbit space debris, and are ideal sites for observing LEO space debris. Investigating Antarctica as a window to the skies for satellite traffic management has been identified as an important goal for Antarctic Astronomy in the...
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Xiaoyan Li09/09/2021, 13:15
The trio Antartica Survey Telescopes(AST3) project is the second generation optical telescopes designed to run on Dome A. The first two telescopes have deployed and operated at Dome A since 2012 and 2015. The third one is now at domestic commissioning stage at Yaoan observatory in Yunnan province, China. This talk will give some details about the latest progress of the project.
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Bin Ma (Sun Yat-sen University)09/09/2021, 13:30
Following the installation of two DIMMs at Kunlun Station, Dome A in early 2019, we were able to directly measure astronomical seeing through the winter for the first time. At a height of just 8 meters, the seeing was detected as good as 0.13 arcsec. For 31% time, it was free of boundary layer turbulence, and consequently was the free-atmosphere seeing only, with a median of 0.31 arcsec. ...
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Michael Ashley (University of New South Wales)09/09/2021, 13:45
At any infrared/THz wavelength longer than about 2.3 microns, China's Kunlun Station in Antarctica has very possibly the darkest sky and best conditions - seeing, cloud coverage, atmospheric stability, transparency - of any site on Earth. This directly translates into dramatic improvements in survey speed and depth. In the near-infrared, the Kdark region just longward of 2.3 microns is...
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Zhaohui Shang (National Astronomical Observatories, CAS)09/09/2021, 14:00
Astronomy work has been carried out at Dome A for more than ten years. The efforts have greatly advanced our knowledge in understanding the site conditions for astronomical observations, the instrumentation under extreme Antarctica conditions, and the research in time-domain astronomy. A complete review is available in Research in Astronomy and Astrophysics (Shang 2020, RAA, 20, 168). We...
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Tristan Guillot (OCA)10/09/2021, 11:05
The ASTEP telescope has begun since 2019 an active program to confirm and monitor long-period transiting exoplanets. Its unique localisation at the Concordia station, Antarctica, allows the observation of targets difficult to observe from other latitudes, in particular when close to the celestial South pole or for long-duration transits. This is ideal to follow-up TESS exoplanetary candidates...
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Georgina Dransfield (University of Birmingham)10/09/2021, 11:20
The Transiting Exoplanet Survey Satellite was launched in 2018 to search the sky for planetary candidates. Of the 870+ southern planetary candidates from TESS currently awaiting confirmation, roughly 10% have transit durations longer than five hours; a further third of these have orbital periods longer than 20 days. Systems like these could fall into the sparsely populated parameter space of...
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Isabelle Vauglin (CRAL/CNRS - Observatoire de Lyon)10/09/2021, 11:35
Following the ANGISS 2.5m off-axis telescope project, presented at the AAA-2015 conference, we propose to build a 1m prototype for 2.5m PLT. Such an optical design is based on a common 2.5m off-axis primary mirror delivering two science cases modes: (1) two mirror corrector optimized to a wide FOV (1Deg) for IR survey and (2) one mirror corrector optimized for a narrow FOV for direct exoplanet...
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Mansi Kasliwal (Caltech)10/09/2021, 11:50
Many astronomical events shine the brightest in the infrared due to atomic opacity, self enshrouding, dust extinction, or low temperature. When we saw the first electromagnetic counterpart to gravitational waves from a binary neutron star merger, it was the rapid reddening due to bound-bound opacity and infrared spectral features that confirmed the synthesis of heavy elements by the r-process....
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Roger Smith (Caltech)10/09/2021, 12:05
The convergence of many new technologies will soon enable high cadence surveys of the infrared sky for the first time. We describe a pathfinder telescope currently under construction, which will demonstrate imaging over a field of view two orders of magnitude greater than previously achieved in the thermal infrared. The novel optical design not only delivers diffraction limited image...
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Dr Jerome Chapellaz (Insitut Polair Francais)10/09/2021, 12:20
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Eric Steinbring (NRC Canada, Herzberg Astronomy and Astrophysics)10/09/2021, 12:45
Although operations at the Polar Environment Atmospheric Research Laboratory (PEARL) nearby Eureka on Ellesmere Island (80 degrees North) have lately been paused, there is renewed interest in the site for astrophysical observations. I will briefly review known PEARL site conditions, and describe the status of a planned compact instrument for characterization of seeing near the ground, of...
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Ming-Tang Chen (Academia Sinica Institute of Astronomy and Astrophysics)10/09/2021, 13:00
I will report the progress and the status of the Greenland Telescope in Thule, Greenland. The telescope was commissioned in the spring of 2018, and it had since participated in the global VLBI observation campaign in millimeter and submillimeter wavelengths. The GLT has been a partner station in the Even Horizon Telescope since 2018 for the 230 GHz VLBI observation. In 2021, we have also...
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Mario Melita (CONICET)10/09/2021, 13:15
Our objective is the development of a robotic optical observatory designed to house a 20" telescope with a low focal ratio of abou f/3. Naturally, this project will take advantage of observing at very high latitudes during the southern night. The scientific objectives will be focused on high brightness point sources with valuable information for various areas of astronomy such as Planetary...
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haikun Wen (Niaot)10/09/2021, 13:30
Abstract:
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Located in the highest point of Antarctic ice cap, Dome A has been considered as one of the best astronomical observatory sites in the world. Some survey telescopes is planning to be installed in Dome A. Unlike any other areas, these telescopes have to be settled on the snow ground. In that case, it is very important to analyze the Snow mechanics,and the deformation of the telescope... -
Matthew Gerges (University of New South Wales)10/09/2021, 13:45
At the University of New South Wales we are designing a wind turbine for the conditions found at China's Kunlun Station at Dome A in Antarctica. While Dome A is the least windy place on Earth, renewable energy from the wind is still possible and has many advantages over the diesel engines that are typically used: for example, wind energy reduces the need to transport and store fuel while...
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Ekawit Kittiya (Department of Physics and Material Science, Faculty of Science, Chiang Mai University)10/09/2021, 14:00
A neutron monitor is a large ground-based detector responding to the flux of cosmic ray particles in space by measuring atmospheric secondary neutrons. Any ground-based detector is sensitive to cosmic rays from a certain range of directions in space. In particular, a particle arriving from a specific sky direction with a specific rigidity (momentum per unit charge) was necessarily moving in a...
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