Results 21 to 30 of about 378,163 (279)

Discovery of 20 UV-emitting SNRs in M31 with UVIT

open access: yesThe Astronomical Journal, 2023
We present the first catalog of supernova remnants (SNRs) in M31 that exhibit diffuse ultraviolet (UV) emission. UV images of M31 were obtained by the Ultraviolet Imaging Telescope (UVIT) on the AstroSat satellite, and the list of SNRs was obtained from ...
Denis Leahy   +2 more
doaj   +1 more source

6U CubeSat for Ultraviolet Time-Domain Astronomy [PDF]

open access: yes, 2019
A wide-field ultraviolet observatory for time-domain astronomy utilizing 6U CubeSat is presented. Ultraviolet waveband is one of the unexplored fields in astronomy.
Sasaki, Kenichi   +7 more
core   +1 more source

Simultaneous Estimates of Star-cluster Age, Metallicity, Mass, and Extinction (SESAMME). I. Presenting an MCMC Approach to Spectral Stellar Population Fitting

open access: yesThe Astrophysical Journal, 2023
We present the first version release of SESAMME, a public, Python-based full spectrum fitting tool for Simultaneous Estimates of Star-cluster Age, Metallicity, Mass, and Extinction.
Logan H. Jones   +5 more
doaj   +1 more source

3. Ultraviolet Astronomy [PDF]

open access: yesTransactions of the International Astronomical Union, 1985
During 1982-1984, progress in ultraviolet astronomy continued through extensive observations with the International Ultraviolet Explorer (IUE), continuing programs of sounding rocket and balloon flights, and through observations made from other orbital spacecraft, including the Space Shuttle and ASTRON.
openaire   +1 more source

The Colorado Ultraviolet Transit Experiment Mission Overview

open access: yesThe Astronomical Journal, 2023
Atmospheric escape is a fundamental process that affects the structure, composition, and evolution of many planets. The signatures of escape are detectable on close-in, gaseous exoplanets orbiting bright stars, owing to the high levels of extreme ...
Kevin France   +20 more
doaj   +1 more source

Challenges on Ultraviolet Astronomy 2014 [PDF]

open access: yesAstrophysics and Space Science, 2014
We are pleased to present this Special Issue of Astrophysics & Space Science; “Challenges on Ultraviolet Astronomy 2014”. This volume comes at a crucial time in Ultraviolet (UV) astronomy. The NASA/ESA programmes that created the community are reaching completion and future missions, apart from the World Space Observatory-Ultraviolet (WSOUV), are small-
Ana I. Gómez de Castro   +4 more
openaire   +1 more source

Switching Superconductivity with Uniaxial Strain in a high‐Tc${\rm T}_{c}$ Cuprate Superconductor

open access: yesAdvanced Functional Materials, EarlyView.
Uniaxial strain is demonstrated as a new scheme for a superconductivity switch. Exploiting the large strain‐induced Tc shift in a cuprate superconductor enables robust switching between superconducting and normal states over 100 cycles with only 0.1% strain.
Baizhi Gao   +3 more
wiley   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

open access: yesAdvanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Extracting Cleaned Swift/UVOT Ultraviolet Grism Spectra with the uvotpy Package

open access: yesThe Astrophysical Journal Supplement Series
The Ultraviolet/Optical Telescope (UVOT) on board the Neil Gehrels Swift Observatory is capable of imaging with seven lenticular filters and of taking slitless spectra with two grisms.
Hao Zhou   +5 more
doaj   +1 more source

Poly(Alkoxythiophene) Rod‐Coil Block Copolymers for Organic Electrochemical Transistors

open access: yesAdvanced Materials, EarlyView.
We present the first synthesis of poly(3‐alkoxythiophene) rod‐coil block copolymers as a new architecture for OMIECs. Incorporating PEG and PLLA coils can enhance device performance beyond the homopolymer. The figure‐of‐merit depends uniquely on coil length.
Junfu Tian   +23 more
wiley   +1 more source

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