Fast and Accurate Emulation of the SDO/HMI Stokes Inversion with Uncertainty Quantification

Kavli Affiliate: J. Todd Hoeksema | First 5 Authors: Richard E. L. Higgins, David F. Fouhey, Dichang Zhang, Spiro K. Antiochos, Graham Barnes | Summary: The Helioseismic and Magnetic Imager (HMI) onboard NASA’s Solar Dynamics Observatory (SDO) produces estimates of the photospheric magnetic field which are a critical input to many space weather modelling and […]


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Stellar Metallicities from SkyMapper Photometry II: Precise photometric metallicities of $sim$280,000 giant stars with [Fe/H] $< -0.75$ in the Milky Way

Kavli Affiliate: Anna Frebel | First 5 Authors: Anirudh Chiti, Anna Frebel, Mohammad K. Mardini, Tatsuya W. Daniel, Xiaowei Ou | Summary: The Milky Way’s metal-poor stars are nearby ancient objects that are used to study early chemical evolution and the assembly and structure of the Milky Way. Here we present reliable metallicities of $sim280,000$ […]


Continue.. Stellar Metallicities from SkyMapper Photometry II: Precise photometric metallicities of $sim$280,000 giant stars with [Fe/H] $< -0.75$ in the Milky Way

The Metal-Poor Metallicity Distribution of the Ancient Milky Way

Kavli Affiliate: Anna Frebel | First 5 Authors: Anirudh Chiti, Mohammad K. Mardini, Anna Frebel, Tatsuya Daniel, | Summary: We present a low metallicity map of the Milky Way consisting of $sim$111,000 giants with $-3.5 lesssim$ [Fe/H] $lesssim -$0.75, based on public photometry from the second data release of the SkyMapper survey. These stars extend […]


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Competing correlated states around the zero field Wigner crystallization transition of electrons in two-dimensions

Kavli Affiliate: Joseph Falson | First 5 Authors: Joseph Falson, Inti Sodemann, Brian Skinner, Daniela Tabrea, Yusuke Kozuka | Summary: The competition between kinetic energy and Coulomb interactions in electronic systems can lead to complex many-body ground states with competing superconducting, charge density wave, and magnetic orders. Here we study the low temperature phases of […]


Continue.. Competing correlated states around the zero field Wigner crystallization transition of electrons in two-dimensions

Gaia EDR3 Parallax Zero-point Offset based on W Ursae Majoris-type Eclipsing Binaries

Kavli Affiliate: Huawei Zhang | First 5 Authors: Fangzhou Ren, Xiaodian Chen, Huawei Zhang, Richard de Grijs, Licai Deng | Summary: We independently determine the zero-point offset of the Gaia early Data Release-3 (EDR3) parallaxes based on $sim 110,000$ W Ursae Majoris (EW)-type eclipsing binary systems. EWs cover almost the entire sky and are characterized […]


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Performance and characterization of the SPT-3G digital frequency-domain multiplexed readout system using an improved noise and crosstalk model

Kavli Affiliate: C. L. Kuo | First 5 Authors: J. Montgomery, P. A. R. Ade, Z. Ahmed, E. Anderes, A. J. Anderson | Summary: The third generation South Pole Telescope camera (SPT-3G) improves upon its predecessor (SPTpol) by an order of magnitude increase in detectors on the focal plane. The technology used to read out […]


Continue.. Performance and characterization of the SPT-3G digital frequency-domain multiplexed readout system using an improved noise and crosstalk model

Narain to Narnia

Kavli Affiliate: Hirosi Ooguri | First 5 Authors: Nathan Benjamin, Christoph A. Keller, Hirosi Ooguri, Ida G. Zadeh, | Summary: We generalize the holographic correspondence between topological gravity coupled to an abelian Chern-Simons theory in three dimensions and an ensemble average of Narain’s family of massless free bosons in two dimensions, discovered by Afkhami-Jeddi et […]


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Inference of the optical depth to reionization from low multipole temperature and polarisation Planck data

Kavli Affiliate: George Efstathiou | First 5 Authors: Roger de Belsunce, Steven Gratton, William Coulton, George Efstathiou, | Summary: This paper explores methods for constructing low multipole temperature and polarisation likelihoods from maps of the cosmic microwave background anisotropies that have complex noise properties and partial sky coverage. We use Planck 2018 High Frequency Instrument […]


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QuasarNet: A new research platform for the data-driven investigation of black holes

Kavli Affiliate: Brian Nord | First 5 Authors: Priyamvada Natarajan, Kwok Sun Tang, Robert McGibbon, Sadegh Khochfar, Brian Nord | Summary: We present QuasarNet, a novel research platform for the data-driven investigation of super-massive black hole (SMBH) populations. While SMBH data sets — observations and simulations — have grown rapidly in complexity and abundance, our […]


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