Results 31 to 40 of about 432,304 (191)

Introduction to papers on astrostatistics

, 2009
We are pleased to present a Special Section on Statistics and Astronomy in this issue of the The Annals of Applied Statistics. Astronomy is an observational rather than experimental science; as a result, astronomical data sets both small and large ...
Loredo, Thomas J., Rice, John, Stein, Michael L.   +2 more
core   +1 more source

Web-Based Visualization of Very Large Scientific Astronomy Imagery [PDF]

, 2015
Visualizing and navigating through large astronomy images from a remote location with current astronomy display tools can be a frustrating experience in terms of speed and ergonomics, especially on mobile devices.
Bertin, Emmanuel, Marmo, Chiara, Pillay, Ruven   +2 more
core   +2 more sources

Research on Multiclassification Algorithm of Ultrawideband Pulsar RFI Based on MobileNetV2

The Astronomical Journal
Radio telescopes are susceptible to radio frequency interference (RFI) during observations, which introduces noise and artificial signals into astronomical data.
Wenna Cai, Hailong Zhang, Yazhou Zhang, Jie Wang, Xu Du, Ting Zhang, Yuyue Jiao, Hongmei Tang, Xinchen Ye, Wanqiong Wang, Jia Li   +10 more
doaj   +1 more source

Precise Distance Measurement for a Near-Earth Asteroid by the Refined Rotational Reflex Velocity Method

The Astronomical Journal, 2023
The rotational reflex velocity (RRV) method was proposed by Heinze and Metchev in 2015 and was used to measure the distances of main-belt asteroids (MBAs). Later, Lin et al. generalized this method using spherical astronomy in 2016.
B. F. Guo, Q. Y. Peng, F. R. Lin, J. L. Cao   +3 more
doaj   +1 more source

Markarian Multiwavelength Data Center (MMDC): A Tool for Retrieving and Modeling Multitemporal, Multiwavelength, and Multimessenger Data from Blazar Observations

The Astronomical Journal
The Markarian Multiwavelength Data Center ( MMDC ) is a web-based tool designed for accessing and retrieving multiwavelength and multimessenger data from blazar observations.
N. Sahakyan, V. Vardanyan, P. Giommi, D. Bégué, D. Israyelyan, G. Harutyunyan, M. Manvelyan, M. Khachatryan, H. Dereli-Bégué, S. Gasparyan   +9 more
doaj   +1 more source

Spatiotemporal Characterization of Cassiopeia A

The Astrophysical Journal, 2023
Analyzing the X-ray data of supernova remnants (SNRs) is among the most challenging tasks in current X-ray astronomy because SNRs are both spatially extended and variable over time. We developed the strategy to track the time-series properties of all the
Yuto Ichinohe, Toshiki Sato
doaj   +1 more source

Firmamento: A Multimessenger Astronomy Tool for Citizen and Professional Scientists

The Astronomical Journal
Firmamento ( https://firmamento.hosting.nyu.edu ) is a new-concept, web-based, and mobile-friendly data analysis tool dedicated to multifrequency/multimessenger emitters, as exemplified by blazars.
Dhurba Tripathi, Paolo Giommi, Adriano Di Giovanni, Rawdha R. Almansoori, Nouf Al Hamly, Francesco Arneodo, Andrea V. Macciò, Goffredo Puccetti, Ulisses Barres de Almeida, Carlos Brandt, Simonetta Di Pippo, Michele Doro, Davit Israyelyan, A. M. T. Pollock, Narek Sahakyan   +14 more
doaj   +1 more source

An Ultrawide Bandwidth Digital Backend System Based on PFB Algorithm for QTT

The Astronomical Journal
For the planning of the QiTai radio Telescope ultrawide bandwidth low-frequency pulsar receiving system, we designed and implemented a Field-Programmable Gate Array (FPGA)+CPU/GPU hybrid architecture digital backend system based on the Polyphase ...
Hai-long Zhang, Ya-zhou Zhang, Shao-cong Guo, Xu Du, Na Wang, Jie Wang, Xin-chen Ye, Han Wu, Jian Li, Xin Pei, Qiao Meng   +10 more
doaj   +1 more source

Some Pattern Recognition Challenges in Data-Intensive Astronomy [PDF]

, 2006
We review some of the recent developments and challenges posed by the data analysis in modern digital sky surveys, which are representative of the information-rich astronomy in the context of Virtual Observatory.
Djorgovski, S. G., Donalek, C., Drake, A., Glikman, E., Graham, M., Mahabal, A., Williams, R.   +6 more
core   +2 more sources

Efficient Searches for Small Signals across Two-channel Noisy Data: A Challenge in Big-data Observations

The Astrophysical Journal Supplement Series
Searching for novel small signals in noisy data is preferably pursued by correlation in two or more independently operating channels. Signals of potential interest exist in tails beyond κσ , where κ denotes a multiple of the standard deviation σ of the ...
Maryam Aghaei Abchouyeh, Maurice H. P. M. van Putten, Seyong Kim   +2 more
doaj   +1 more source