Results 1 to 10 of about 30,708 (168)
The Long-term Monitoring Results of Insight-HXMT in the First 4 yr Galactic Plane Scanning Survey
The Astrophysical Journal Supplement Series, 2023 The first X-ray source catalog of the Insight-HXMT Galactic Plane (∣ b ∣ < 10°) Scanning Survey (GPSS) is presented based on the data accumulated from 2017 June to 2021 August. The 4 yr limit sensitivities at main energy bands can reach 8.2 × 10 ^−12 erg
Chen Wang +9 more
doaj +1 more source
Astronomische Nachrichten, 2003 AbstractWe review highlights of the results obtained from recent Galactic X‐ray survey observations, in particular ASCA Galactic center and plane surveys and our Chandra deep survey on the (l, b) ≈ (28°.5, 0°.0) region. Strong hard X‐ray diffuse components are observed from Galactic ridge, center and bulge, and they have both thermal and non‐thermal ...
Ebisawa, K. +4 more
openaire +2 more sources
BASS. XXII. The BASS DR2 AGN Catalog and Data
The Astrophysical Journal Supplement Series, 2022 We present the active galactic nucleus (AGN) catalog and optical spectroscopy for the second data release of the Swift BAT AGN Spectroscopic Survey (BASS DR2).
Michael J. Koss +34 more
doaj +1 more source
The Swift Deep Galactic Plane Survey (DGPS) Phase I Catalog
The Astrophysical Journal Supplement Series, 2023 The Swift Deep Galactic Plane Survey (DGPS) is a Swift Key Project consisting of 380 tiled pointings covering ∼40 deg ^2 of the Galactic plane between longitude 10 < ∣ l ∣ < 30 deg and latitude ∣ b ∣ < 0.5 deg. Each pointing has a 5 ks exposure, yielding
B. O’Connor +32 more
doaj +1 more source
BAT X‐Ray Survey. I. Methodology and X‐Ray Identification [PDF]
The Astrophysical Journal, 2008 35 pages, 10 figures, Accepted for publication in ApJ.
Ajello, M. +5 more
openaire +4 more sources
The Astrophysical Journal, 2023 Modern X-ray telescopes have detected hundreds of thousands of X-ray sources in the universe. However, current methods to classify these sources using the X-ray data themselves suffer problems—detailed X-ray spectroscopy of individual sources is too time
Pavan R. Hebbar, Craig O. Heinke
doaj +1 more source
Revisiting X-Ray-bright Optically Normal Galaxies with the Chandra Source Catalog
The Astrophysical Journal, 2023 X-ray bright optically normal galaxies (XBONGs) are galaxies with X-ray luminosities consistent with those of active galactic nuclei (AGNs) but no evidence of AGN optical emission lines.
Dong-Woo Kim +5 more
doaj +1 more source
In-orbit Background and Sky Survey Simulation Study of POLAR-2/LPD
The Astrophysical Journal, 2023 The Low-Energy X-ray Polarization Detector (LPD) is one of the payloads in the POLAR-2 experiment, designed as an external payload for the China Space Station deployment in early 2026. LPD is specifically designed to observe the polarization of gamma-ray
Zu-Ke Feng +16 more
doaj +1 more source
Target Detection Framework for Lobster Eye X-Ray Telescopes with Machine-learning Algorithms
The Astrophysical Journal Supplement Series, 2023 Lobster eye telescopes are ideal monitors to detect X-ray transients because they could observe celestial objects over a wide field of view in the X-ray band.
Peng Jia, Wenbo Liu, Yuan Liu, Haiwu Pan
doaj +1 more source
BASS. XXVI. DR2 Host Galaxy Stellar Velocity Dispersions
The Astrophysical Journal Supplement Series, 2022 We present new central stellar velocity dispersions for 484 Sy 1.9 and Sy 2 from the second data release of the Swift/BAT AGN Spectroscopic Survey (BASS DR2).
Michael J. Koss +20 more
doaj +1 more source