Showing 2023 · astro-ph.IMShow all

28 papers · 2 filters

astro-ph.IM2023★ 2 cited

Satellite Impact on Astronomical Observations Based on Elliptical Orbit Model

Tianzhu Hu, Yong Zhang, Xiangqun Cui +5

Space-based and ground-based telescopes have extensively documented the impact of satellites on astronomical observations. With the proliferation of satellite mega-constellation pr…

astro-ph.IM2023★ 3 cited

The impact of bias row noise to photometric accuracy: case study based on a scientific CMOS detector

Li Shao, Hu Zhan, Chao Liu +4

We tested a new model of CMOS detector manufactured by the Gpixel Inc, for potential space astronomical application. In laboratory, we obtain some bias images under the typical app…

astro-ph.IM2023★ 3 cited

Detecting Cosmic 21 cm Global Signal Using an Improved Polynomial Fitting Algorithm

Tianyang Liu, Junhua Gu, Quan Guo +3

Detecting the cosmic 21 cm signal from Epoch of Reionization (EoR) has always been a difficult task. Although the Galactic foreground can be regarded as a smooth power-law spectrum…

astro-ph.IM2023★ 4 cited

The Intensity of Diffuse Galactic Emission Reflected by Meteor Trails

Feiyu Zhao, Ruxi Liang, Zepei Yang +4

We calculate the reflection of diffuse galactic emission by meteor trails and investigate its potential relationship to Meteor Radio Afterglow (MRA). The formula to calculate the r…

astro-ph.IM2023

The Effects of the Local Environment on a Compact Radio Interferometer I: Cross-coupling in the Tianlai Dish Pathfinder Array

Juhun Kwak, John Podczerwinski, Peter Timbie +10

The visibilities measured by radio astronomical interferometers include non-astronomical correlated signals that arise from the local environment of the array. These correlated sig…

astro-ph.IM2023★ 9 cited

Impact of overlapping signals on parameterized post-Newtonian coefficients in tests of gravity

Yixuan Dang, Ziming Wang, Dicong Liang +1

Gravitational waves have been instrumental in providing deep insights into the nature of gravity. Next-generation detectors, such as the Einstein Telescope, are predicted to have a…

astro-ph.IM2023★ 50 cited

2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments

Nemanja Jovanovic, Pradip Gatkine, Narsireddy Anugu +77

Photonics offer numerous functionalities that can be used to realize astrophotonic instruments. The most spectacular example to date is the ESO Gravity instrument at the Very Large…

astro-ph.IM2023★ 5 cited

An Aluminum-coated sCMOS sensor for X-Ray Astronomy

Qinyu Wu, Zhixing Ling, Chen Zhang +2

In recent years, tremendous progress has been made on scientific Complementary Metal Oxide Semiconductor (sCMOS) sensors, making them a promising device for future space X-ray miss…

astro-ph.IM2023★ 11 cited

Periodic Variable Star Classification with Deep Learning: Handling Data Imbalance in an Ensemble Augmentation Way

Zihan Kang, Yanxia Zhang, Jingyi Zhang +4

Time-domain astronomy is progressing rapidly with the ongoing and upcoming large-scale photometric sky surveys led by the Vera C. Rubin Observatory project (LSST). Billions of vari…

astro-ph.IM2023★ 2 cited

3D ScatterNet: Inference from 21 cm Light-cones

Xiaosheng Zhao, Shifan Zuo, Yi Mao

The Square Kilometre Array (SKA) will have the sensitivity to take the 3D light-cones of the 21 cm signal from the epoch of reionization. This signal, however, is highly non-Gaussi…

astro-ph.IM2023★ 5 cited

Astrometric Calibration and Performance of the Dark Energy Spectroscopic Instrument Focal Plane

S. Kent, E. Neilsen, K. Honscheid +46

The Dark Energy Spectroscopic Instrument, consisting of 5020 robotic fiber positioners and associated systems on the Mayall telescope at Kitt Peak, Arizona, is carrying out a surve…

astro-ph.IM2023★ 4 cited

The Edge Sensor of Segmented Mirror Based on Fringes of Equal Thickness

Xi Zhang, Heng Zuo, Yong Zhang +1

Co-phase and co-focus detection is one of the key technologies for large-aperture segmented mirror telescopes. In this paper, a new edge sensor based on fringes of equal thickness…

astro-ph.IM2023★ 3 cited

Astrometric Calibration of the BeijingArizona Sky Survey

Xiyan Peng, Zhaoxiang Qi, Tianmeng Zhang +13

We present the astrometric calibration of the Beijing-Arizona Sky Survey (BASS). The BASS astrometry was tied to the International Celestial Reference Frame via the \emph{Gaia} Dat…

astro-ph.IM2023★ 32 cited

The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite

Z. X. Ling, X. J. Sun, C. Zhang +122

The Lobster Eye Imager for Astronomy (LEIA), a pathfinder of the Wide-field X-ray Telescope of the Einstein Probe (EP) mission, was successfully launched onboard the SATech-01 sate…

astro-ph.IM2023★ 2 cited

Deep Learning Applications Based on WISE Infrared Data: Classification of Stars, Galaxies and Quasars

Guiyu Zhao, Bo Qiu, A-Li Luo +4

The Wide-field Infrared Survey Explorer (WISE) has detected hundreds of millions of sources over the entire sky. However, classifying them reliably is a great challenge due to dege…

astro-ph.IM2023★ 11 cited

Site-testing at the Muztagh-ata Site.V. Nighttime Cloud Amount during the Last Five Years

Jing Xu, Guo-jie Feng, Guang-xin Pu +12

The clarity of nights is the major factor that should be carefully considered for optical/infrared astronomical observatories in site-testing campaigns. Cloud coverage is directly…

astro-ph.IM2023★ 57 cited

Performance of the Quasar Spectral Templates for the Dark Energy Spectroscopic Instrument

Allyson Brodzeller, Kyle Dawson, Stephen Bailey +44

Millions of quasar spectra will be collected by the Dark Energy Spectroscopic Instrument (DESI), leading to a four-fold increase in the number of known quasars. High accuracy quasa…

astro-ph.IM2023★ 12 cited

Simulation of CSSTs astrometric capability

Zhensen Fu, Zhaoxiang Qi, Shilong Liao +5

The China Space Station Telescope (CSST) will enter a low Earth orbit around 2024 and operate for 10 years, with seven of those years devoted to surveying the area of the median-to…

astro-ph.IM2023★ 15 cited

Performance of FAST with an Ultra-Wide Bandwidth Receiver at 500-3300 MHz

Chuan-Peng Zhang, Peng Jiang, Ming Zhu +6

The Five-hundred-meter Aperture Spherical radio Telescope (FAST) has been running for several years. A new Ultra-Wide Bandwidth (UWB) receiver, simultaneously covering 500-3300 MHz…

astro-ph.IM2023★ 17 cited

An in-depth exploration of LAMOST Unknown spectra based on density clustering

Haifeng Yang, Xiaona Yin, Jianghui Cai +6

LAMOST (Large Sky Area Multi-Object Fiber Spectroscopic Telescope) has completed the observation of nearly 20 million celestial objects, including a class of spectra labeled `Unkno…

astro-ph.IM2023★ 9 cited

Investigating the image lag of a scientific CMOS sensor in X-ray detection

Qinyu Wu, Zhixing Ling, Chen Zhang +4

In recent years, scientific CMOS (sCMOS) sensors have been vigorously developed and have outperformed CCDs in several aspects: higher readout frame rate, higher radiation tolerance…

astro-ph.IM2023★ 22 cited

SKA Science Data Challenge 2: analysis and results

P. Hartley, A. Bonaldi, R. Braun +105

The Square Kilometre Array Observatory (SKAO) will explore the radio sky to new depths in order to conduct transformational science. SKAO data products made available to astronomer…

astro-ph.IM2023★ 3 cited

First sodium laser guide star asterism launching platform in China on 1.8m telescope at Gaomeigu Observatory

Rui-Tao Wang, Hong-Yang Li, Lu Feng +13

The application of sodium laser guide star is the key difference between modern adaptive optics system and traditional adaptive optics system. Especially in system like multi-conju…

astro-ph.IM2023★ 8 cited

L dwarfs detection from SDSS images using improved Faster R-CNN

Zhi Cao, Zhenping Yi, Jingchang Pan +4

We present a data-driven approach to automatically detect L dwarfs from Sloan Digital Sky Survey(SDSS) images using an improved Faster R-CNN framework based on deep learning. The e…