Machine learning synthetic spectra for probabilistic redshift estimation: SYTH-Z

Kavli Affiliate: Katrin Heitmann | First 5 Authors: Nesar Ramachandra, Jon├ís Chaves-Montero, Alex Alarcon, Arindam Fadikar, Salman Habib | Summary: Photometric redshift estimation algorithms are often based on representative data from observational campaigns. Data-driven methods of this type are subject to a number of potential deficiencies, such as sample bias and incompleteness. Motivated by these […]


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Broadband solenoidal haloscope for terahertz axion detection

Kavli Affiliate: Clarence Chang | First 5 Authors: Jesse Liu, Kristin Dona, Gabe Hoshino, Stefan Knirck, Noah Kurinsky | Summary: We introduce the Broadband Reflector Experiment for Axion Detection (BREAD) conceptual design and science program. This haloscope plans to search for bosonic dark matter across the [10$^{-3}$, 1] eV ([0.24, 240] THz) mass range. BREAD […]


Continue.. Broadband solenoidal haloscope for terahertz axion detection

Broadband solenoidal haloscope for terahertz axion detection

Kavli Affiliate: Clarence Chang | First 5 Authors: Jesse Liu, Kristin Dona, Gabe Hoshino, Stefan Knirck, Noah Kurinsky | Summary: We introduce the Broadband Reflector Experiment for Axion Detection (BREAD) conceptual design and science program. This haloscope plans to search for bosonic dark matter across the [10$^{-3}$, 1] eV ([0.24, 240] THz) mass range. BREAD […]


Continue.. Broadband solenoidal haloscope for terahertz axion detection

Cosmological Constraints from Gas Mass Fractions of Massive, Relaxed Galaxy Clusters

Kavli Affiliate: Steven Allen, Lindsey E. Bleem, Bradford Benson, Adam B. Mantz | First 5 Authors: Adam B. Mantz, Steven W. Allen, Rebecca E. A. Canning, Lucie Baumont, Bradford Benson | Summary: We present updated cosmological constraints from measurements of the gas mass fractions ($f_{gas}$) of massive, dynamically relaxed galaxy clusters. Our new data set […]


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Synthesizing Stellar Populations in South Pole Telescope Galaxy Clusters: I. Ages of Quiescent Member Galaxies at 0.3 < z < 1.4

Kavli Affiliate: Michael D. Gladders | First 5 Authors: Gourav Khullar, Matthew B. Bayliss, Michael D. Gladders, Keunho J. Kim, Michael S Calzadilla | Summary: Using stellar population synthesis models to infer star formation histories (SFHs), we analyse photometry and spectroscopy of a large sample of quiescent galaxies which are members of Sunyaev-Zel’dovich (SZ)-selected galaxy […]


Continue.. Synthesizing Stellar Populations in South Pole Telescope Galaxy Clusters: I. Ages of Quiescent Member Galaxies at 0.3 < z < 1.4

Development of MKIDs for measurement of the Cosmic Microwave Background with the South Pole Telescope

Kavli Affiliate: Erik Shirokoff, Clarence Chang | First 5 Authors: Karia Dibert, Pete Barry, Zhaodi Pan, Adam Anderson, Bradford Benson | Summary: We present details of the design, simulation, and initial test results of prototype detectors for the fourth-generation receiver of the South Pole Telescope (SPT). Optimized for the detection of key secondary anisotropies of […]


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Bridging the Gap: Categorizing Gravitational-Wave Events at the Transition Between Neutron Stars and Black Holes

Kavli Affiliate: Daniel E. Holz | First 5 Authors: Amanda M. Farah, Maya Fishbach, Reed Essick, Daniel E. Holz, Shanika Galaudage | Summary: We search for features in the mass distribution of detected compact binary coalescences which signify the transition between neutron stars and black holes. We analyze all gravitational wave detections by LIGO-Virgo made […]


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Event Horizon Telescope observations of the jet launching and collimation in Centaurus A

Kavli Affiliate: Thomas M. Crawford | First 5 Authors: Michael Janssen, Heino Falcke, Matthias Kadler, Eduardo Ros, Maciek Wielgus | Summary: Very-long-baseline interferometry (VLBI) observations of active galactic nuclei at millimeter wavelengths have the power to reveal the launching and initial collimation region of extragalactic radio jets, down to $10-100$ gravitational radii ($r_g=GM/c^2$) scales in […]


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Target of Opportunity Observations of Gravitational Wave Events with Vera C. Rubin Observatory

Kavli Affiliate: Daniel E. Holz | First 5 Authors: Igor Andreoni, Raffaella Margutti, Om Sharan Salafia, B. Parazin, V. Ashley Villar | Summary: The discovery of the electromagnetic counterpart to the binary neutron star merger GW170817 has opened the era of gravitational-wave multi-messenger astronomy. Rapid identification of the optical/infrared kilonova enabled a precise localization of […]


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The Variability of the Black-Hole Image in M87 at the Dynamical Time Scale

Kavli Affiliate: John E. Carlstrom | First 5 Authors: Kaushik Satapathy, Dimitrios Psaltis, Feryal Ozel, Lia Medeiros, Sean T. Dougall | Summary: The black-hole images obtained with the Event Horizon Telescope (EHT) are expected to be variable at the dynamical timescale near their horizons. For the black hole at the center of the M87 galaxy, […]


Continue.. The Variability of the Black-Hole Image in M87 at the Dynamical Time Scale