Results 111 to 120 of about 31,186 (206)

Webb telescope goes into space. [PDF]

open access: yesInnovation (Camb), 2022
Xin L.
europepmc   +1 more source

Statistical Properties of Cold Streams in Massive Star-forming Halos in TNG50

open access: yesThe Astrophysical Journal
Cold, dense streams of gas are predicted to penetrate deeply into massive (≳10 ^12 M _⊙ ) halos at cosmic noon ( z  ∼ 4–2), fueling galaxies to sustain high star formation rates.
Isabel Medlock   +6 more
doaj   +1 more source

The multiple coherence scales of C IV at cosmic noon

open access: yesAstronomy & Astrophysics
The spatial and kinematic structure of the circumgalactic medium remains poorly constrained observationally. We computed the clustering of C IV absorption systems at cosmic noon using quasar pairs.
Cortés-Muñoz H.   +8 more
doaj   +1 more source

Measurements of Cosmic Magnetism with LOFAR and SKA [PDF]

open access: yesAdvances in Radio Science, 2007
The origin of magnetic fields in stars, galaxies and clusters is an open problem in astrophysics. The next-generation radio telescopes <i>Low Frequency Array (LOFAR)</i> and <i>Square Kilometre Array (SKA)</i> will revolutionize ...
R. Beck
doaj  

Cascaded Gamma-Ray Emission Associated with the KM3NeT Ultrahigh-energy Event KM3-230213A

open access: yesThe Astrophysical Journal Letters
A neutrino-like event with an energy of ∼220 PeV was recently detected by the KM3NeT/ARCA telescope. If this neutrino comes from an astrophysical source or from the interaction of an ultrahigh-energy cosmic ray in the intergalactic medium, the ultrahigh ...
Ke Fang, Francis Halzen, Dan Hooper
doaj   +1 more source

Time Delay of Fast Radio Burst Population with Respect to the Star Formation History

open access: yesThe Astrophysical Journal
In spite of significant progress in the research of fast radio bursts (FRBs) in recent decades, their origin is still under extensive debate. Investigation of the population of FRBs can provide new insight into this interesting problem.
Hai-Nan Lin, Xin-Yi Li, Rui Zou
doaj   +1 more source

A New Approach for Constraining Large-scale Temperature Fluctuations in the Intergalactic Medium

open access: yesThe Astrophysical Journal
The reionization of helium is thought to occur at 2.5 ≲ z ≲ 4, marking the last phase transition and final global heating event of the intergalactic medium (IGM).
Saba Etezad-Razavi   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy