S. S. Meyer
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The Optical and Mechanical Design of POEMMA Balloon with Radio Open
POEMMA Balloon with Radio (PBR) is a NASA super-pressure balloon mission building toward the proposed Probe Of Extreme Multi-Messenger Astrophysics (POEMMA) dual satellite mission. In its planned 2027 launch, PBR will study Ultra-High-Ener…
The Optical and Mechanical Design of POEMMA Balloon with Radio Open
POEMMA Balloon with Radio (PBR) is a NASA super-pressure balloon mission building toward the proposed Probe Of Extreme Multi-Messenger Astrophysics (POEMMA) dual satellite mission. In its planned 2027 launch, PBR will study Ultra-High-Ener…
Dipole-independent measurements of nearly zero CMB correlation: a possible symmetry of primordial causal quantum coherence Open
Anisotropy of space-time is measured on the scale of the cosmic horizon, using the angular correlation function $C(\Theta)$ of cosmic microwave background temperature at large angular separation $\Theta$. Even-parity correlation $C_{\rm ev…
Trainability of Quantum Models Beyond Known Classical Simulability Open
Variational Quantum Algorithms (VQAs) are promising candidates for near-term quantum computing, yet they face scalability challenges due to barren plateaus, where gradients vanish exponentially in the system size. Recent conjectures sugges…
View article: The Extreme Universe Observatory on a Super-Pressure Balloon II: Mission, Payload, and Flight
The Extreme Universe Observatory on a Super-Pressure Balloon II: Mission, Payload, and Flight Open
The Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) is a pathfinder mission toward a space-based observatory such as the Probe of Extreme Multi-Messenger Astrophysics (POEMMA). The aim of POEMMA is the observat…
View article: The EUSO-SPB2 Fluorescence Telescope for the Detection of Ultra-High Energy Cosmic Rays
The EUSO-SPB2 Fluorescence Telescope for the Detection of Ultra-High Energy Cosmic Rays Open
The Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) flew on May 13$^{\text{th}}$ and 14$^{\text{th}}$ of 2023. Consisting of two novel optical telescopes, the payload utilized next-generation instrumentation fo…
View article: SPT-SZ MCMF: an extension of the SPT-SZ catalogue over the DES region
SPT-SZ MCMF: an extension of the SPT-SZ catalogue over the DES region Open
We present an extension to a Sunyaev–Zel’dovich Effect (SZE) selected cluster catalogue based on observations from the South Pole Telescope (SPT); this catalogue extends to lower signal to noise than the previous SPT–SZ catalogue and there…
View article: EUSO-Offline: A comprehensive simulation and analysis framework
EUSO-Offline: A comprehensive simulation and analysis framework Open
The complexity of modern cosmic ray observatories and the rich data sets they capture often require a sophisticated software framework to support the simulation of physical processes, detector response, as well as reconstruction and analys…
Dipole-independent measurements of nearly-zero CMB correlation: a possible symmetry of primordial causal quantum coherence Open
Anisotropy of space-time is measured on the scale of the cosmic horizon, using the angular correlation function $C(Θ)$ of cosmic microwave background (CMB) temperature at large angular separation $Θ$. Even-parity correlation $C_{\rm even}(…
View article: Measurement of gravitational lensing of the cosmic microwave background using SPT-3G 2018 data
Measurement of gravitational lensing of the cosmic microwave background using SPT-3G 2018 data Open
Here, we present a measurement of gravitational lensing over 1500deg2 of the Southern sky using SPT-3G temperature data at 95 GHz and 150 GHz taken in 2018. The lensing amplitude relative to a fiducial Planck 2018 Lambda cold dark matter (…
View article: Developments and results in the context of the JEM-EUSO program obtained with the ESAF simulation and analysis framework
Developments and results in the context of the JEM-EUSO program obtained with the ESAF simulation and analysis framework Open
JEM-EUSO is an international program for the development of space-based Ultra-High Energy Cosmic Ray observatories. The program consists of a series of missions which are either under development or in the data analysis phase. All instrume…
Clinical practice and barriers among Swiss physiotherapists treating patients with anterior cruciate ligament reconstruction: A survey of pre-operative rehabilitation to return to sport Open
This study highlights areas within ACLR rehabilitation practice in Switzerland that could be improve. Improvements in understanding of the barriers to implementation of best evidence in practice and a redefinition of the clinical process a…
Infrared Cloud Monitoring with UCIRC2 Open
The second generation of the Extreme Universe Space Observatory on a Super Pressure Balloon (EUSO-SPB2) is a balloon instrument that searched for ultra high energy cosmic rays (UHECRs) with energies above 1 EeV and very high energy neutrin…
View article: SPT-SZ MCMF: An extension of the SPT-SZ catalog over the DES region
SPT-SZ MCMF: An extension of the SPT-SZ catalog over the DES region Open
We present an extension to a Sunyaev-Zel'dovich Effect (SZE) selected cluster catalog based on observations from the South Pole Telescope (SPT); this catalog extends to lower signal-to-noise than the previous SPT-SZ catalog and therefore i…
View article: A Measurement of Gravitational Lensing of the Cosmic Microwave Background Using SPT-3G 2018 Data
A Measurement of Gravitational Lensing of the Cosmic Microwave Background Using SPT-3G 2018 Data Open
We present a measurement of gravitational lensing over 1500 deg$^2$ of the Southern sky using SPT-3G temperature data at 95 and 150 GHz taken in 2018. The lensing amplitude relative to a fiducial Planck 2018 $Λ$CDM cosmology is found to be…
EUSO-SPB2 Fluorescence Telescope Calibration and Field Tests Open
The Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2), successfully launched from Wanaka, New Zealand on May 13, 2022, is a precursor for a space-based astroparticle observatory such as the Probe Of Extreme Multi…
Infrared Cloud Monitoring with UCIRC2 Open
The second generation of the Extreme Universe Space Observatory on a Super Pressure Balloon (EUSO-SPB2) is a balloon instrument that searched for ultra high energy cosmic rays (UHECRs) with energies above 1 EeV and very high energy neutrin…
Angular correlations on causally-coherent inflationary horizons Open
We develop a model for correlations of cosmic microwave background (CMB) anisotropy on the largest angular scales, based on standard causal geometrical relationships in slow-roll inflation. Unlike standard models based on quantized field m…
The Fermilab Holometer: A program to measure Planck scale indeterminacy Open
We propose an experiment at Fermilab to study a conjectured effect called "holographic noise" that may arise from new Planck scale physics: the measured positions of bodies may wander randomly from ideal geodesics of classical relativity, …
Angular correlations on causally-coherent inflationary horizons Open
We develop a model for correlations of cosmic microwave background anisotropy on the largest angular scales, based on standard causal geometrical relationships in slow-roll inflation. Unlike standard models based on quantized field modes, …
View article: Simultaneous Millimeter-wave, Gamma-Ray, and Optical Monitoring of the Blazar PKS 2326-502 during a Flaring State
Simultaneous Millimeter-wave, Gamma-Ray, and Optical Monitoring of the Blazar PKS 2326-502 during a Flaring State Open
Including millimeter-wave data in multiwavelength studies of the variability of active galactic nuclei (AGN) can provide insights into AGN physics that are not easily accessible at other wavelengths. We demonstrate in this work the potenti…
View article: Simultaneous Millimeter-wave, Gamma-ray, and Optical Monitoring of the Blazar PKS 2326-502 During a Flaring State
Simultaneous Millimeter-wave, Gamma-ray, and Optical Monitoring of the Blazar PKS 2326-502 During a Flaring State Open
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 demonstrate in this work …
View article: Asteroid Measurements at Millimeter Wavelengths with the South Pole Telescope
Asteroid Measurements at Millimeter Wavelengths with the South Pole Telescope Open
We present the first measurements of asteroids in millimeter wavelength data from the South Pole Telescope (SPT), which is used primarily to study the cosmic microwave background (CMB). We analyze maps of two ∼270 deg 2 sky regions near th…
Combining Planck and SPT Cluster Catalogs: Cosmological Analysis and Impact on the Planck Scaling Relation Calibration Open
We provide the first combined cosmological analysis of the South Pole Telescope (SPT) and Planck cluster catalogs. The aim is to provide an independent calibration for Planck scaling relations, exploiting the cosmological constraining powe…
Improving Cosmological Constraints from Galaxy Cluster Number Counts with CMB-cluster-lensing Data: Results from the SPT-SZ Survey and Forecasts for the Future Open
We show the improvement to cosmological constraints from galaxy cluster surveys with the addition of cosmic microwave background (CMB)-cluster lensing data. We explore the cosmological implications of adding mass information from the 3.1 σ…
Shocks in the stacked Sunyaev-Zel’dovich profiles of clusters II: Measurements from SPT-SZ + <i>Planck</i> Compton-<i>y</i> map Open
We search for the signature of cosmological shocks in stacked gas pressure profiles of galaxy clusters using data from the South Pole Telescope (SPT). Specifically, we stack the latest Compton-y maps from the 2500 deg2 SPT-SZ survey on the…
Anomalies of cosmic anisotropy from holographic universality of great-circle variance Open
We examine all-sky cosmic microwave background temperature maps on large angular scales to compare their consistency with two scenarios: the standard inflationary quantum picture, and a distribution constrained to have a universal variance…