We present the host galaxies of four apparently nonrepeating fast radio bursts (FRBs), FRB
20181223C, FRB 20190418A, FRB 20191220A, and FRB 20190425A, reported in the first …

We report the discovery of six active galactic nuclei (AGNs) caught" turning on" during the
first nine months of the Zwicky Transient Facility (ZTF) survey. The host galaxies were …

Research projects that actively involve 'crowds' or non-professional 'citizen scientists' are
attracting growing attention. Such projects promise to increase scientific productivity while …

Context. Giant radio galaxies (GRGs, or colloquially 'giants') are the Universe's largest
structures generated by individual galaxies. They comprise synchrotron-radiating active …

We present an unsupervised machine learning technique that automatically segments and
labels galaxies in astronomical imaging surveys using only pixel data. Distinct from previous …

This paper analyzes the problem of global rotation in general relativity (GR) theory. Simple
cosmological models with rotation and expansion are presented, which give a natural …

The distribution of spin directions of∼ 6.4⋅ 10 4 ∼6.4⋅10^4 SDSS spiral galaxies with
spectra was examined, and compared to the distribution of∼ 3.3⋅ 10 4 ∼3.3⋅10^4 Pan …

Deep convolutional neural networks (DCNNs) have become the most common solution for
automatic image annotation due to their non-parametric nature, good performance, and their …

The nature of galaxy spin is still not fully known. Iye, Yagi, and Fukumoto (2021, AJ, 907,
123) applied a 3D analysis to a dataset of bright SDSS galaxies that was used in the past for …

Autonomous digital sky surveys such as Pan-STARRS have the ability to image a very large
number of galactic and extragalactic objects, and the large and complex nature of the image …