Results 131 to 140 of about 2,093,256 (347)
Simultaneous X-Ray and Optical Polarization Observations of the Blazar Mrk 421
The Astrophysical JournalWe present near-simultaneous X-ray and optical polarization measurements in the high synchrotron peaked (HSP) blazar Mrk 421. The X-ray polarimetric observations were carried out using Imaging X-ray Polarimetry Explorer (IXPE) on 2023 December 6.
Athira M. Bharathan +9 more
doaj +1 more source
, 2009 We performed simultaneous multiwavelength observations of OJ 287 with the Nobeyama Millimeter Array for radio, the KANATA telescope and the KVA telescope for optical, the Suzaku satellite for X-ray and the MAGIC telescope for very high energy (VHE) gamma-
Bonnoli, G. +12 more
core
Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 2, February 2026.Abstract Climate variability can regulate aquatic methane fluxes as increasing temperatures can elevate microbial metabolic rates, including methanogenesis. It is less well known how climate‐induced variability in seasonal precipitation and runoff might affect methane concentrations and fluxes in aquatic ecosystems.
Ryan Rimas, Jackie Webb, Kerri Finlay
wiley +1 more source
2FHL J1745.1–3035: A Newly Discovered, Powerful Pulsar Wind Nebula Candidate
The Astrophysical JournalWe present a multi-epoch, multi-observatory X-ray analysis for 2FHL J1745.1–3035, a newly discovered very high-energy Galactic source detected by the Fermi Large Area Telescope (LAT) located in close proximity to the Galactic Center ( l = 358.°5319; b = −
S. Marchesi +10 more
doaj +1 more source
Imaging slitless spectrometer for X-ray astronomy [PDF]
, 1968 Imaging slitless spectrometer, a combination of an X ray transmission /or reflection/ grating and image-forming X ray telescope, is capable of obtaining simultaneous spatial and spectral information about celestial X ray ...
Gursky, H., Zehnpfennig, T.
core +1 more source
Space Weather, Volume 24, Issue 2, February 2026.Abstract A demonstrated failure mode for operational solar flare forecasting is the inability to forecast flares that occur near, or just beyond, the solar limb. To address this shortcoming, we develop a “4π $4{\uppi }$” full‐heliosphere event forecasting framework and evaluate its statistical classification ability against this specific challenge.
K. D. Leka +5 more
wiley +1 more source
SIGMA and XTE observations of the soft X-ray transient XTEJ1755-324
, 1998 We present observations of the X-ray transient XTEJ1755-324 performed during summer 1997 with the XTE satellite and with the SIGMA hard X-ray telescope onboard the GRANAT observatory.
A. Dyachkov +22 more
core +2 more sources
X-Ray Polarization Study of the Neutron Star Low-mass X-Ray Binary GX 349+2
The Astrophysical JournalWe report the first X-ray polarimetric results of the neutron star (NS) low-mass X-ray binary Z-source GX 349+2 using the Imaging X-ray Polarimetry Explorer (IXPE). We discovered that the X-ray source was polarized at a polarization degree of PD = 1.1% ±
Unnati Kashyap +5 more
doaj +1 more source
Journal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.DOPO‐containing melamine flame retardants improve the flame retardancy, droplet resistance and mechanical properties of WPU. ABSTRACT To improve the flame retardancy of waterborne polyurethane (WPU), two novel DOPO‐containing melamine‐based flame retardants were synthesized by combining Schiff bases (derived from p‐hydroxybenzaldehyde ...
Chao Liu +4 more
wiley +1 more source
The Astrophysical JournalA 2.1 yr periodic oscillation of the gamma-ray flux from the blazar PG 1553+113 has previously been tentatively identified in ∼7 yr of data from the Fermi Large Area Telescope.
S. Abdollahi +100 more
doaj +1 more source