Explanipedia

SPRITEly: Time-domain Millimeter Interferometry at the Owens Valley Radio Observatory Open

Nitika Yadlapalli Yurk, Vikram Ravi, Mark Hodges, James W. Lamb, R. W. Hobbs , et al. · 2024

Though the time-domain millimeter sky is yet to be well characterized, the scarcity of millimeter observing resources in the world at present hampers progress toward it. In efforts to bolster the exploration of millimeter transients, we pr…

COMAP Pathfinder -- Season 2 results III. Implications for cosmic molecular gas content at "Cosmic Half-past Eleven" Open

Dongwoo T. Chung, Patrick C. Breysse, Kieran Cleary, Delaney A. Dunne, J. G. S. Lunde , et al. · 2024

The Carbon monOxide Mapping Array Project (COMAP) Pathfinder survey continues to demonstrate the feasibility of line-intensity mapping using high-redshift carbon monoxide (CO) line emission traced at cosmological scales. The latest COMAP P…

COMAP Early Science. VIII. A Joint Stacking Analysis with eBOSS Quasars Open

Delaney A. Dunne, Kieran Cleary, Patrick C. Breysse, Dongwoo T. Chung, H. T. Ihle , et al. · 2024

We present a new upper limit on the cosmic molecular gas density at z = 2.4–3.4 obtained using the first year of observations from the CO Mapping Array Project (COMAP). COMAP data cubes are stacked on the 3D positions of 243 quasars select…

Application of a seismic network to baleen whale call detection and localization in the Panama basin–a Bryde's whale example Open

Jean Baptiste Tary, C. Peirce, R. W. Hobbs, Felipe Bonilla Walker, Camilo De La Hoz , et al. · 2024

Baleen whales use sounds of various characteristics for different tasks and interactions. This study focuses on recordings from the Costa Rica Rift, in the Eastern Tropical Pacific Ocean, made by 25 ocean-bottom seismographs and a vertical…

Oceanic crust—seismic structure, lithology and the cause of the 2A Event at borehole 504B Open

C. Peirce, R. W. Hobbs · 2024

SUMMARY This study focuses on the 3-D velocity structure and thickness of ∼7-Myr-old oceanic crust surrounding borehole 504B, located ∼235 km from the intermediate-spreading Costa Rica Rift (Panama Basin). It investigates how well seismic …

Structure and dynamics of the Ecuador Fracture Zone, Panama Basin Open

C. Peirce, Joe Tedd, R. W. Hobbs · 2023

SUMMARY In this study, multiple geophysical data types are used to investigate the structure and dynamics of the Ecuador Fracture Zone—a complex multistranded strike-slip fault system located in the Panama Basin. Gravity modelling reveals …

Deep Synoptic Array Science: First FRB and Host Galaxy Catalog Open

Casey Law, K. K. Sharma, Vikram Ravi, Guihai Chen, Morgan Catha , et al. · 2023

Fast Radio Bursts (FRBs) are a powerful and mysterious new class of transient that are luminous enough to be detected at cosmological distances. By associating FRBs to host galaxies, we can measure intrinsic and environmental properties th…

Seismic wave propagation around subsurface igneous sill complexes Open

Oliver Sanford, Nicholas Schofield, R. W. Hobbs, Richard J. Brown · 2023

Imaging both within and beneath subsurface igneous sill complexes is a seismic exploration challenge. A significant aspect of this challenge is due to a lack of understanding of the interaction between the heterogeneous geological structur…

Abrupt episode of mid-Cretaceous ocean acidification triggered by massive volcanism Open

Matthew M. Jones, Bradley B. Sageman, David Selby, Andrew D. Jacobson, Sietske J. Batenburg , et al. · 2023

New evidence for the Kerguelen plume activity during East Gondwana rifting to breakup Open

M. L. G. Tejada, Takashi Miyazaki, Osamu Ishizuka, Bogdan Stefanov Vaglarov, Qing Chang , et al. · 2023

Uncertainties in Ray-Tracing Tomography Models Used for Sub-Basalt Seismic Imaging Open

Oliver Sanford, R. W. Hobbs, Richard J. Brown, Nicholas Schofield · 2022

Sequences of buried basalt lavas found along continental margins may be associated with hydrocarbon deposits. However, they have heterogeneous velocity and density structures that degrade seismic imaging of basalt and sub-basalt structures…

Supplemental Information: Abrupt episode of mid-Cretaceous ocean acidification triggered by massive volcanism Open

Matthew M. Jones, Bradley B. Sageman, David Selby, Andrew D. Jacobson, Sietske J. Batenburg , et al. · 2022

Supplementary data for Jones et al. (2023) in Nature Geoscience, including all newly measured geochemical data and coding scripts in R and MATLAB for modeling of osmium geochemical time series.

COMAP Early Science. VII. Prospects for CO Intensity Mapping at Reionization Open

Patrick C. Breysse, Dongwoo T. Chung, Kieran Cleary, H. T. Ihle, Hamsa Padmanabhan , et al. · 2022

We introduce COMAP- EoR , the next generation of the Carbon Monoxide Mapping Array Project aimed at extending CO intensity mapping to the Epoch of Reionization. COMAP- EoR supplements the existing 30 GHz COMAP Pathfinder with two additiona…

COMAP Early Science. II. Pathfinder Instrument Open

James W. Lamb, Kieran Cleary, D. P. Woody, Morgan Catha, Dongwoo T. Chung , et al. · 2022

Line intensity mapping (LIM) is a new technique for tracing the global properties of galaxies over cosmic time. Detection of the very faint signals from redshifted carbon monoxide (CO), a tracer of star formation, pushes the limits of what…

COMAP Early Science. III. CO Data Processing Open

Marie Kristine Foss, H. T. Ihle, Jowita Borowska, Kieran Cleary, H. K. Eriksen , et al. · 2022

We describe the first-season CO Mapping Array Project (COMAP) analysis pipeline that converts raw detector readouts to calibrated sky maps. This pipeline implements four main steps: gain calibration, filtering, data selection, and mapmakin…

COMAP Early Science. IV. Power Spectrum Methodology and Results Open

H. T. Ihle, Jowita Borowska, Kieran Cleary, H. K. Eriksen, Marie Kristine Foss , et al. · 2022

We present the power spectrum methodology used for the first-season COMAP analysis, and assess the quality of the current data set. The main results are derived through the Feed–Feed Pseudo-Cross-Spectrum (FPXS) method, which is a robust e…

COMAP Early Science. I. Overview Open

Kieran Cleary, Jowita Borowska, Patrick C. Breysse, Morgan Catha, Dongwoo T. Chung , et al. · 2022

The CO Mapping Array Project (COMAP) aims to use line-intensity mapping of carbon monoxide (CO) to trace the distribution and global properties of galaxies over cosmic time, back to the Epoch of Reionization (EoR). To validate the technolo…

COMAP Early Science. VI. A First Look at the COMAP Galactic Plane Survey Open

Thomas J. Rennie, Stuart Harper, C. Dickinson, Liju Philip, Kieran Cleary , et al. · 2022

We present early results from the CO Mapping Array Project (COMAP) Galactic Plane Survey conducted between 2019 June and 2021 April, spanning 20° < ℓ < 40° in Galactic longitude and ∣ b ∣ < 1.°5 in Galactic latitude with an angular resolut…

COMAP Early Science. V. Constraints and Forecasts at z ∼ 3 Open

Dongwoo T. Chung, Patrick C. Breysse, Kieran Cleary, H. T. Ihle, Hamsa Padmanabhan , et al. · 2022

We present the current state of models for the z ∼ 3 carbon monoxide (CO) line intensity signal targeted by the CO Mapping Array Project (COMAP) Pathfinder in the context of its early science results. Our fiducial model, relating dark matt…

Seismic Wave Propagation Around Subsurface Igneous Sill Complexes Open

Oliver Sanford, Nick Schofield, R. W. Hobbs, Richard K. Brown · 2022

Supplemental Information: Abrupt episode of mid-Cretaceous ocean acidification triggered by massive volcanism Open

Matthew M. Jones, Bradley B. Sageman, David Selby, Andrew D. Jacobson, Sietske J. Batenburg , et al. · 2022

Supplementary data for Jones et al. (2023) in Nature Geoscience, including all newly measured geochemical data and coding scripts in R and MATLAB for modeling of osmium geochemical time series.

Temperature and Salinity Inverted for a Mediterranean Eddy Captured With Seismic Data, Using a Spatially Iterative Markov Chain Monte Carlo Approach Open

Wuxin Xiao, Katy Sheen, Qunshu Tang, Jamie D. Shutler, R. W. Hobbs , et al. · 2021

Ocean submesoscale dynamics are thought to play a key role in both the climate system and ocean productivity, however, subsurface observations at these scales remain rare. Seismic oceanography, an established acoustic imaging method, provi…

COMAP Early Science: V. Constraints and Forecasts at $z \sim 3$ Open

Dongwoo T. Chung, Patrick C. Breysse, Kieran Cleary, H. T. Ihle, Hamsa Padmanabhan , et al. · 2021

We present the current state of models for the $z\sim3$ carbon monoxide (CO) line-intensity signal targeted by the CO Mapping Array Project (COMAP) Pathfinder in the context of its early science results. Our fiducial model, relating dark m…

IODP Expedition 369, Hole U1514C - Well Logging Data Open

Brian T. Huber, R. W. Hobbs, Kara A. Bogus, Sietske J. Batenburg, Hans-Jorgen Brumsack , et al. · 2021