Explanipedia

The Atacama Cosmology Telescope: DR6 power spectra, likelihoods and ΛCDM parameters Open

Thibaut Louis, Adrien La Posta, Zachary Atkins, Hidde T. Jense, Irene Abril-Cabezas , et al. · 2025

We present power spectra of the cosmic microwave background (CMB) anisotropy in temperature and polarization, measured from the Data Release 6 maps made from Atacama Cosmology Telescope (ACT) data. These cover 19,000 deg 2 of sky in bands …

Improved Absolute Polarization Calibrator for BICEP CMB Polarimeters Open

Annie Polish, P. A. R. Ade, Zeeshan Ahmed, M. Amiri, D. Barkats , et al. · 2025

Cosmic birefringence is a hypothesized parity violation in electromagnetism that predicts a frequency-independent polarization rotation as light propagates. This would rotate the light from the Cosmic Microwave Background, producing an une…

Thermal Sunyaev-Zel’dovich effect at the core of CL J1226.9+3332 revealed by NOEMA Open

M. Muñoz-Echeverría, J. F. Macías–Pérez, R. Neri, É. Pointecouteau, R. Adam , et al. · 2025

We present first detailed maps of the thermal Sunyaev-Zel’dovich (tSZ) effect on a z = 0.89 cluster with the NOrthern Extended Millimeter Array (NOEMA). The high sensitivity of these observations enabled the effective identification and re…

The Simons Observatory: science goals and forecasts for the enhanced Large Aperture Telescope Open

M. Abitbol, Irene Abril-Cabezas, S. Adachi, P. A. R. Ade, Alexandre Adler , et al. · 2025

We describe updated scientific goals for the wide-field, millimeter-wave survey that will be produced by the Simons Observatory (SO). Significant upgrades to the 6-meter SO Large Aperture Telescope (LAT) are expected to be complete by 2028…

Overdense fireworks in GOODS-N: Unveiling a record number of massive dusty star forming galaxies at z$\sim$5.2 with the N2CLS Open

G. Lagache, Mengyuan Xiao, A. Beelen, S. Berta, L. Ciesla , et al. · 2025

As part of the N2CLS Survey, we have identified a remarkable overdensity of ten bright dusty star-forming galaxies at z$\sim$5.2 in the GOODS-N field. Three of these galaxies, N2GN_1_01, 06, and 23 (known as GN10, HDF850.1, and S3, respect…

NIKA2 Cosmological Legacy Survey Open

D. Chérouvrier, Juan-Francisco Macías-Pérez, F.–X. Désert, R. Adam, P. A. R. Ade , et al. · 2025

Clusters of galaxies, formed in the latest stages of structure formation, are unique cosmological probes. With the advent of large CMB surveys like those from the Planck satellite, the ACT and SPT telescopes, we now have access to a large …

Measurements of the temperature and -mode polarization of the cosmic microwave background from the full 500-square-degree SPTpol dataset Open

T.-L. Chou, P. A. R. Ade, A. J. Anderson, Jason E. Austermann, L. Balkenhol , et al. · 2025

International audience

Preliminary Study of Spider Diversity of Family Oxyopidae from Akola District M.S. India Open

N. Potekar, P. A. R. Ade · 2025

Spider diversity will study to explore the fauna of Akola. This is the attempt make for preparing list of species from oxyopidae morphology and anatomy of oxyopidae spider as noticed above it is insect eater spider. They are economically a…

The SPT-Deep Cluster Catalog: Sunyaev-Zel'dovich Selected Clusters from Combined SPT-3G and SPTpol Measurements over 100 Square Degrees Open

K. Kornoelje, L. E. Bleem, E. S. Rykoff, T. Abbott, P. A. R. Ade , et al. · 2025

We present a catalog of 500 galaxy cluster candidates in the SPT-Deep field: a 100 deg$^2$ field that combines data from the SPT-3G and SPTpol surveys to reach noise levels of 3.0, 2.2, and 9.0 $\mu$K-arcmin at 95, 150, and 220 GHz, respec…

The SPT-Deep Cluster Catalog: Sunyaev-Zel'dovich Selected Clusters from Combined SPT-3G and SPTpol Measurements over 100 Square Degrees Open

K. Kornoelje, L. E. Bleem, E. S. Rykoff, T. M. C. Abbott, P. A. R. Ade , et al. · 2025

We present a catalog of 500 galaxy cluster candidates in the SPT-Deep field: a 100 deg$^2$ field that combines data from the SPT-3G and SPTpol surveys to reach noise levels of 3.0, 2.2, and 9.0 $μ$K-arcmin at 95, 150, and 220 GHz, respecti…

The Atacama Cosmology Telescope: DR6 Maps Open

Sigurd Næss, Yilun Guan, Adriaan J. Duivenvoorden, Matthew Hasselfield, Yuhan Wang , et al. · 2025

We present Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) maps of the Cosmic Microwave Background temperature and polarization anisotropy at arcminute resolution over three frequency bands centered on 98, 150 and 220 GHz. The maps …

The Atacama Cosmology Telescope: DR6 Constraints on Extended Cosmological Models Open

Erminia Calabrese, J. Colin Hill, Hidde T. Jense, Adrien La Posta, Irene Abril-Cabezas , et al. · 2025

We use new cosmic microwave background (CMB) primary temperature and polarization anisotropy measurements from the Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) to test foundational assumptions of the standard cosmological model a…

Multiprobe cosmology from the abundance of SPT clusters and DES galaxy clustering and weak lensing Open

S. Bocquet, S. Grandis, E. Krause, C. To, L. E. Bleem , et al. · 2025

Cosmic shear, galaxy clustering, and the abundance of massive halos each probe the large-scale structure of the Universe in complementary ways. We present cosmological constraints from the joint analysis of the three probes, building on th…

A panchromatic view of N2CLS GOODS-N: The evolution of the dust cosmic density since <i>z</i> ∼ 7 Open

S. Berta, G. Lagache, A. Beelen, R. Adam, P. A. R. Ade , et al. · 2025

To understand early star formation, it is essential to determine the dust mass budget of high-redshift galaxies. Sub-millimeter rest-frame emission, dominated by cold dust, is an unbiased tracer of dust mass. The New IRAM KID Arrays 2 (NIK…

Measurement and Modeling of Polarized Atmosphere at the South Pole with SPT-3G Open

A. Coerver, J. A. Zebrowski, S. Takakura, W. L. Holzapfel, P. A. R. Ade , et al. · 2025

We present the detection and characterization of fluctuations in linearly polarized emission from the atmosphere above the South Pole. These measurements make use of data from the SPT-3G receiver on the South Pole Telescope in three freque…

A panchromatic view of N2CLS GOODS-N: the evolution of the dust cosmic density since z~7 Open

S. Berta, G. Lagache, A. Beelen, R. Adam, P. A. R. Ade , et al. · 2025

(abridged) To understand early star formation, it is essential to determine the dust mass budget of high-redshift galaxies. Sub-millimeter rest-frame emission, dominated by cold dust, is an unbiased tracer of dust mass. The NIKA2 camera co…

Measurements of the Temperature and E-mode Polarization of the Cosmic Microwave Background from the Full 500-square-degree SPTpol Dataset Open

T.-L. Chou, P. A. R. Ade, A. J. Anderson, Jason E. Austermann, L. Balkenhol , et al. · 2025

Using the full four-year SPTpol 500 deg$^2$ dataset in both the 95 GHz and 150 GHz frequency bands, we present measurements of the temperature and $E$-mode polarization of the cosmic microwave background (CMB), as well as the $E$-mode pola…

Analysis of Polarized Dust Emission Using Data from the First Flight of SPIDER Open

P. A. R. Ade, M. Amiri, Steven J. Benton, A. S. Bergman, R. Bihary , et al. · 2025

Using data from the first flight of Spider and from the Planck High Frequency Instrument, we probe the properties of polarized emission from interstellar dust in the Spider observing region. Component-separation algorithms operating in bot…

Multiprobe Cosmology from the Abundance of SPT Clusters and DES Galaxy Clustering and Weak Lensing Open

S. Bocquet, S. Grandis, E. Krause, C. To, L. E. Bleem , et al. · 2024

Cosmic shear, galaxy clustering, and the abundance of massive halos each probe the large-scale structure of the Universe in complementary ways. We present cosmological constraints from the joint analysis of the three probes, building on th…

BICEP/Keck XIX: Extremely Thin Composite Polymer Vacuum Windows for BICEP and Other High Throughput Millimeter Wave Telescopes Open

P. A. R. Ade, Zeeshan Ahmed, M. Amiri, D. Barkats, R. Basu Thakur , et al. · 2024

Millimeter-wave refracting telescopes targeting the degree-scale structure of the cosmic microwave background (CMB) have recently grown to diffraction-limited apertures of over 0.5 meters. These instruments are entirely housed in vacuum cr…

Mexico-UK Submillimeter Camera for AsTronomy focal plane performance at the Large Millimeter Telescope Open

Marcial Tapia, P. A. R. Ade, Emmaly Aguilar Pérez, P. S. Barry, Thomas L. R. Brien , et al. · 2024

The Mexico-UK Submillimeter Camera for AsTronomy (MUSCAT) is a continuum camera in the 1.1-mm band for the Large Millimeter Telescope (LMT), with 1458 lumped-element kinetic inductance detectors distributed across six arrays. Installed on …

BICEP/Keck XVIII: Measurement of BICEP3 polarization angles and consequences for constraining cosmic birefringence and inflation Open

BICEP Keck Collaboration, NULL AUTHOR_ID, P. A. R. Ade, Zeeshan Ahmed, M. Amiri , et al. · 2024

We use a custom-made calibrator to measure individual detectors' polarization angles of BICEP3, a small aperture telescope observing the cosmic microwave background (CMB) at 95GHz from the South Pole. We describe our calibration strategy a…

Interpreting Millimeter Emission from IMEGIN galaxies NGC 2146 and NGC 2976 Open

G. Ejlali, F. S. Tabatabaei, H. Roussel, R. Adam, P. A. R. Ade , et al. · 2024

The millimeter continuum emission from galaxies provides important information about cold dust, its distribution, heating, and role in their InterStellar Medium (ISM). This emission also carries an unknown portion of the free-free and sync…

SPT clusters with DES and HST weak lensing. II. Cosmological constraints from the abundance of massive halos Open

S. Bocquet, S. Grandis, L. E. Bleem, Matthias Klein, J. J. Mohr , et al. · 2024

Here, we present cosmological constraints from the abundance of galaxy clusters selected via the thermal Sunyaev-Zel’dovich (SZ) effect in South Pole Telescope (SPT) data with a simultaneous mass calibration using weak gravitational lensin…

Calibration Measurements of the BICEP3 and BICEP Array CMB Polarimeters from 2017 to 2024 Open

Christos Giannakopoulos, C. Vergès, P. A. R. Ade, A. Zeeshan, M. Amiri , et al. · 2024

The BICEP3 and BICEP Array polarimeters are small-aperture refracting telescopes located at the South Pole designed to measure primordial gravitational wave signatures in the Cosmic Microwave Background (CMB) polarization, predicted by inf…

First Constraints on the Epoch of Reionization Using the Non-Gaussianity of the Kinematic Sunyaev-Zel’dovich Effect from the South Pole Telescope and Herschel-SPIRE Observations Open

S. Raghunathan, P. A. R. Ade, A. J. Anderson, B. Ansarinejad, M. Archipley , et al. · 2024

We report results from an analysis aimed at detecting the trispectrum of the kinematic Sunyaev-Zel'dovich (kSZ) effect by combining data from the South Pole Telescope (SPT) and Herschel-SPIRE experiments over a 100 deg^{2} field. The SPT o…

Development of the 220/270 GHz Receiver of BICEP Array Open

Y. Nakato, P. A. R. Ade, Zafar U. Ahmed, Mojtaba Amiri, D. Barkats , et al. · 2024

Measurements of B-mode polarization in the CMB sourced from primordial gravitational waves would provide information on the energy scale of inflation and its potential form. To achieve these goals, one must carefully characterize the Galac…

Toward the first cosmological results of the NIKA2 Sunyaev-Zeldovich Large Program: The SZ-Mass scaling relation Open

A. Moyer-Anin, R. Adam, P. A. R. Ade, H. Ajeddig, Paulo André , et al. · 2024

In Sunyaev-Zeldovich (SZ) cluster cosmology, two tools are needed to be able to exploit data from large scale surveys in the millimeter-wave domain. An accurate description of the IntraCluster Medium (ICM) pressure profile is needed along …

Testing the ΛCDM Cosmological Model with Forthcoming Measurements of the Cosmic Microwave Background with SPT-3G Open

K. Prabhu, S. Raghunathan, M. Millea, G.P Lynch, P. A. R. Ade , et al. · 2024

We forecast constraints on cosmological parameters enabled by three surveys conducted with SPT-3G, the third-generation camera on the South Pole Telescope. The surveys cover separate regions of 1500, 2650, and 6000 deg 2 to different depth…

Flaring Stars in a Nontargeted Millimeter-wave Survey with SPT-3G Open

C. Tandoi, S. Guns, A. Foster, P. A. R. Ade, A. J. Anderson , et al. · 2024

We present a flare star catalog from 4 yr of nontargeted millimeter-wave survey data from the South Pole Telescope (SPT). The data were taken with the SPT-3G camera and cover a 1500 deg 2 region of the sky from 20 h 40 m 0 s to 3 h 20 m 0 …

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