Results 71 to 80 of about 5,863 (203)
The cross-correlation of galaxies in absorption with the Lyman $\alpha$ forest
, 2023 We present the first clustering measurement of Strong Blended Lyman $\alpha$ (SBLA) absorption systems by measuring their cross-correlation with the Lyman $\alpha$ forest. SBLAs are a new population of absorbers detected within the Lyman $\alpha$ forest.
Andrei Cuceu +11 more
core +1 more source
The Astrophysical JournalLy α emission is one of a few observable features of galaxies that can trace the neutral hydrogen content in the Universe during the Epoch of Reionization (EoR). To accomplish this, we need an efficient way to survey for Ly α emitters (LAEs) at redshifts
Axel Runnholm +27 more
doaj +1 more source
The Effects of Reionization on Lyman-alpha Galaxy Surveys
, 2005 9 pages, 5 figures, in press at MNRAS (minor changes in response to referee's comments)
Furlanetto, Steven R. +2 more
openaire +2 more sources
Why Does the October Effect Not Occur at Night?
Geophysical Research Letters, Volume 51, Issue 7, 16 April 2024.Abstract The October effect is known as a rapid and strong decrease in the signal amplitude of radio waves with very low frequency (VLF), reflected at the lowest edge of the ionosphere. This strong decrease can be observed only during the daytime. Although the October effect is long known, it is hardly investigated and its mechanism is still unknown ...
Vivien Wendt +5 more
wiley +1 more source
Spatial correlation between submillimetre and Lyman-α galaxies in the SSA 22 protocluster [PDF]
, 2009 Lyman- α emitters are thought to be young, low-mass galaxies with ages of ~10⁸ yr (refs 1, 2). An overdensity of them in one region of the sky (the SSA 22 field) traces out a filamentary structure in the early Universe at a redshift of z ≈3.1 (equivalent
David Hughes, ITZIAR ARETXAGA MENDEZ
core
A High Rate of Foreground Contaminants toward High-redshift Galaxies Resolved by JWST
The Astrophysical JournalWe present a study of high-redshift Ly α emitters (LAEs) with multiple components using the Hubble Space Telescope and JWST. High-redshift galaxies are mostly point-like objects on ground-based images, but they often exhibit multiple components in higher
Weiyang Liu, Linhua Jiang
doaj +1 more source
The Astrophysical Journal Supplement Series, 2023 We present 20,567 Ly α emitters (LAEs) at z = 2.2 − 7.3 that are photometrically identified by the SILVERRUSH program in a large survey area up to 25 deg ^2 with deep images of five broadband filters ( grizy ) and seven narrowband filters targeting Ly α ...
Satoshi Kikuta +15 more
doaj +1 more source
EMM EMUS Observations of Hot Oxygen Corona at Mars: Radial Distribution and Temporal Variability
Journal of Geophysical Research: Space Physics, Volume 129, Issue 3, March 2024.Abstract We present the first observations of the dayside coronal oxygen emission in far ultraviolet (FUV) measured by the Emirates Mars Ultraviolet Spectrometer (EMUS) onboard the Emirates Mars Mission (EMM). The high sensitivity of EMUS is providing an opportunity to observe the tenuous oxygen corona in FUV, which is otherwise difficult to observe ...
Krishnaprasad Chirakkil +18 more
wiley +1 more source
Optical polarimetry studies of Seyfert galaxies [PDF]
, 1999 Optical imaging polarimetry has been performed on seven nearby Seyfert galaxies, three with face-on and four with edge-on host galaxies of various morphological classifications.
Felton, Michelle Ann
core
Lyman-alpha absorption around nearby galaxies
, 2002 We have used STIS aboard HST to search for Lyman-alpha (Lya) absorption lines in the outer regions of eight nearby galaxies using background QSOs and AGN as probes. Lya lines are detected within a few hundred km/s of the systemic velocity of the galaxy in all cases.
Bowen, David V. +2 more
openaire +2 more sources