Results 11 to 20 of about 46,879 (68)

A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars

open access: yesThe Astrophysical Journal Letters, 2023
We report the discovery of an accreting supermassive black hole at z = 8.679. This galaxy, denoted here as CEERS_1019, was previously discovered as a Ly α -break galaxy by Hubble with a Ly α redshift from Keck.
Rebecca L. Larson   +51 more
doaj   +1 more source

Physics Academic Program Review [PDF]

open access: yes, 2023
This report summarizes an evaluation of the UNT Libraries' Physics-related resources and materials to determine if the collection is adequately serving patron needs.
Harker, Karen
core  

Features of formation of small-scale wave disturbances during a sudden magnetospheric compression

open access: yesSolar-Terrestrial Physics, 2017
Quasi-periodic changes of the geomagnetic field and plasma parameters in the range of Pc 5 pulsations, which occurred immediately after the interaction of interplanetary shock (IPS) with Earth’s magnetosphere in the event of April 24, 2009 at 00:53 UT ...
Moiseev A.V.   +5 more
doaj   +1 more source

Simultaneous Horizontal and Vertical Oscillation of a Quiescent Filament Observed by CHASE and SDO

open access: yesThe Astrophysical Journal, 2023
In this paper, we present the imaging and spectroscopic observations of the simultaneous horizontal and vertical large-amplitude oscillation of a quiescent filament triggered by an extreme-ultraviolet (EUV) wave on 2022 October 2.
Jun Dai   +7 more
doaj   +1 more source

Modeling the electron temperature distribution in F2 region of high-latitude ionosphere for winter solstice conditions

open access: yesSolar-Terrestrial Physics, 2016
Using the three-dimensional model of the high-latitude ionosphere in Euler variables, which takes into account the mismatch between geographic and geomagnetic poles, we study the behavior of the electron temperature Te in the F2 region as a function of ...
Golikov I.A.   +2 more
doaj   +1 more source

How Solar Soft X-Ray Irradiance Is Affected by the Size of Field of View

open access: yesThe Astrophysical Journal, 2023
Soft X-ray images of the Sun obtained with multiple broadband filters provide a simple and useful method to calculate averaged coronal temperature and emission measure, from which we can further calculate solar X-ray irradiance in physical units, e.g ...
Aki Takeda, Shannon Boland
doaj   +1 more source

The reversal of the Sun’s magnetic field in cycle 24

open access: yesSolar-Terrestrial Physics, 2016
Analysis of synoptic data from the Vector Spectromagnetograph (VSM) of the Synoptic Optical Long-term Investigations of the Sun (SOLIS) and the NASA/NSO Spectromagnetograph (SPM) at the NSO/Kitt Peak Vacuum Telescope facility shows that the reversals of ...
Mordvinov A.V.   +3 more
doaj   +1 more source

Two Massive, Compact, and Dust-obscured Candidate z ≃ 8 Galaxies Discovered by JWST

open access: yesThe Astrophysical Journal, 2023
We present a search for extremely red, dust-obscured, z > 7 galaxies with JWST/NIRCam+MIRI imaging over the first 20 arcmin ^2 of publicly available Cycle 1 data from the COSMOS-Web, CEERS, and PRIMER surveys.
Hollis B. Akins   +59 more
doaj   +1 more source

The presence of a systematic error in SDO/HMI data

open access: yesSolar-Terrestrial Physics, 2018
In this paper, we came to the conclusion that there is a systematic error in SDO/HMI (Helioseismic and Magnetic Imager aboard the Solar Dynamics Observatory) vector magnetic data, which reveals itself in a deviation from the radial direction of the knot ...
Rudenko G.V., Dmitrienko I.S.
doaj   +1 more source

Diverse Molecular Structures across the Whole Star-forming Disk of M83: High-fidelity Imaging at 40 pc Resolution

open access: yesThe Astrophysical Journal, 2023
We present Atacama Large Millimeter/submillimeter Array (ALMA) imaging of molecular gas across the full star-forming disk of the barred spiral galaxy M83 in CO( J = 1–0).
Jin Koda   +25 more
doaj   +1 more source

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