Including millimeter-wave (mm-wave) data in multi-wavelength studies of the variability of active galactic nuclei (AGN) can provide insights into AGN physics that are not easily accessible at other wavelengths. We will discuss the potential of cosmic microwave background (CMB) telescopes to provide long-term, high-cadence mm-wave AGN monitoring over large fractions of sky. The South Pole...
I will review what we know about mm-wave selected dusty galaxies: their composition, redshift distribution, and spectral properties. I will review the latest observations from ALMA and JWST. I will present an overview of current and planned blank-field surveys. I will discuss prospects for characterizing the population with future facilities in the coming decades.
The South Pole Telescope (SPT) is at the frontier of measuring the cosmic microwave background and surveying the millimeter sky. The third-generation SPT camera (SPT-3G) has observing frequencies centered at 90, 150, and 220 GHz (3.3, 2, and 1.4 mm) and arcminute resolution, enabling the study of millimeter-bright astrophysical objects. In this work, we present the static, emissive point...
Abstract: Information about the late-time Universe is imprinted on the small-scale CMB as photons travel to us from the surface of last scattering. Several processes are at play and small-scale fluctuations are very rich and non-Gaussian in nature. I will review some recent and exciting results that use the Sunyaev-Zel'dovich (SZ) effects and gravitational lensing to paint a full picture of...
As cosmic microwave background photons travel through the Universe a small fraction of them interact with the intervening cosmic gas and thereby imprint the properties of this gas on our CMB observations. In this talk I will describe how data from the Atacama Cosmology Telescope can be used to isolate the signals arising from hot gas throughout the Universe and how the data can be used to...
One of the most powerful tests of our cosmological model and of new physics is to determine the growth of large-scale structure with time. Motivated by this and by reports of tensions in structure growth, in the first part of my talk I will show state-of-the-art determinations of cosmic structure growth using CMB gravitational lensing measurements from the Atacama Cosmology Telescope (ACT), in...
The South Pole Telescope (SPT), a 10-meter telescope optimized for observing the primary and secondary anisotropies of the cosmic microwave background (CMB), is currently equipped with the SPT-3G camera. The high angular resolution and low noise maps produced by SPT-3G are ideally suited for reconstructing the CMB lensing potential, mapping matter distribution to high redshifts, and probing...
The kinetic Sunyaev--Zel'dovich kSZ effect is sourced by CMB photons scattering off of moving electron gas, and contains information on gas density as well as velocity. Through the velocity dependence, this signal contains information about cosmology on the largest scales. By combining a CMB map with a galaxy survey to measure where the electrons are, the velocity information can be isolated...
Primary anisotropies and gravitational lensing of the cosmic microwave background (CMB) provide a wealth of information on cosmology. In an analysis that extracts such information, a first step is to create sky maps of anisotropies in the I, Q, and U Stokes parameters of millimeter-wave radiation fields. We will present the procedure that we used to make and validate new sky maps of the...
SPT-3G, the third-generation camera on the South Pole Telescope (SPT-3G), is being used to observe the cosmic microwave background (CMB) anisotropies to unprecedented depth at arcminute resolution. The temperature and E-mode polarization anisotropies of the CMB provide a wealth of information on the composition and evolution of the universe. This talk presents the upgraded cosmological...
I will present power spectra of the cosmic microwave background (CMB) anisotropy in temperature and polarization, as measured from the Atacama Cosmology Telescope (ACT) Data Release 6 maps. These maps cover 19,000 square degrees in bands centered at 98, 150, and 220 GHz, with white noise levels three times lower than Planck in polarization, and angular resolution roughly five times higher. I...
Cosmic birefringence is a hypothetical signature of parity violation in the electromagnetic interaction, and would manifest as a rotation of CMB polarisation as the signal travels through our Universe. This effect is degenerate with instrument polarisation, making it a calibration and data analysis challenge to constrain. In this talk, I will focus on the sensitivity to cosmic birefringence of...
There is no consensus on how baryonic feedback shapes the non-linear matter power spectrum from hydrodynamical simulations. With improvements in survey size and methodology, this uncertainty is now a limiting systematic for cosmic shear inference at small scales. Modern simulations are tuned to reproduce a variety of galaxy observations, however, they still predict a wide range of feedback...
The hot circumgalactic medium (CGM) is believed to host most of the baryons and metals that are missing from the stellar disk and ISM. However, detecting the hot CGM is extremely challenging due to its faintness and the complexity of the background in mm and X-ray. We have cross-correlated the WISExSuperCosMos galaxy catalog with the Compton-y map derived from the CMB data of the Atacama...
For decades, instruments operating in the X-ray and mm wavebands have provided the capability of observing the hot intracluster medium (ICM) of galaxy clusters, and determining its density, temperature, and pressure. It has been possible only in recent years to determine the spatially resolved kinematic properties of the cluster gas via measurements of line shifting and broadening in the X-ray...
The ALMA Wideband Sensitivity Upgrade (WSU) is an ongoing partnership-wide initiative that will dramatically increase the ALMA system’s observing efficiency across ALMA’s entire wavelength range and for all observing modes. As part of the WSU, most of the observatory’s hardware elements will be replaced or upgraded, including key receivers and signal chain components; a new correlator, the...
The CCAT Observatory's Fred Young Submillimeter Telescope, a novel, high-throughput, 6-meter aperture telescope, is currently under construction at 5600 m on Cerro Chajnantor in the Chilean Atacama Desert. CCAT will address a suite of science goals, including Big Bang cosmology, star formation, line-intensity mapping of cosmic reionization, galactic magnetic fields, astronomical transients,...
CMB-S4, the next-generation ground-based cosmic microwave background (CMB) experiment, will make measurements with unprecedented precision and provide fundamental new insights into physics and astronomy. Its key measurements will include the search for primordial gravitational waves, probes of the nature of dark matter and dark energy, mapping matter throughout the Universe, and the detection...
AtLAST is a next-generation concept for a 50-m single dish telescope covering 30-950 GHz in frequency and featuring a field of view >500 times larger than that of current large mm-wave facilities like the Large Millimeter Telescope. When it is built, it will be the first submm single dish with >20-m aperture ever and the only >12-m single dish with full access to the southern sky. AtLAST will...
