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One of the major limitations of microlensing observations toward the Large Magellanic Cloud (LMC) is the low rate of event detection. What can be done to improve this rate? Is it better to invest telescope time in more frequent observations…

Astrophysics · Physics 2009-10-30 Andrew Gould

This paper presents an effective approach to identify power quality events based on IEEE Std 1159-2009 caused by intermittent power sources like those of renewable energy. An efficient characterization of these disturbances is granted by…

Signal Processing · Electrical Eng. & Systems 2024-02-20 M. D. Borrás , J. C. Bravo , J. C. Montaño

Differential distributed space-time coding (D-DSTC) technique has been considered for relay networks to provide both diversity gain and high throughput in the absence of channel state information. Conventional differential detection (CDD)…

Information Theory · Computer Science 2014-04-09 M. R. Avendi , Ha H. Nguyen , Nguyen Quoc-Tuan

A new approach to detect change points based on differential smoothing and multiple testing is presented for long data sequences modeled as piecewise constant functions plus stationary ergodic Gaussian noise. As an application of the STEM…

Statistics Theory · Mathematics 2019-11-20 Dan Cheng , Zhibing He , Armin Schwartzman

We adapt the friends of friends algorithm to the analysis of light curves, and show that it can be successfully applied to searches for transient phenomena in large photometric databases. As a test case we search OGLE-III light curves for…

Solar and Stellar Astrophysics · Physics 2018-10-24 M. Rozyczka , W. Narloch , P. Pietrukowicz , I. B. Thompson , W. Pych

We present our 500 pc distance-limited study of stellar fares using the Dark Energy Camera as part of the Deeper, Wider, Faster Program. The data was collected via continuous 20-second cadence g band imaging and we identify 19,914 sources…

We present a novel method for measuring the rate of periodic phenomena (e.g., rotation, flicker, and vibration), by an event camera, a device asynchronously reporting brightness changes at independently operating pixels with high temporal…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Jakub Kolář , Radim Špetlík , Jiří Matas

Microlensing surveys have discovered thousands of events with almost all events discovered within the Galactic bulge or toward the Magellanic clouds. The Zwicky Transient Facility (ZTF), while not designed to be a microlensing campaign, is…

Solar and Stellar Astrophysics · Physics 2021-02-23 Michael S. Medford , Jessica R. Lu , William A. Dawson , Casey Y. Lam , Nathan R. Golovich , Edward F. Schlafly , Peter Nugent

Thanks to the advances in robotic telescopes, the time domain astronomy leads to a large number of transient events detected in images every night. Data mining and machine learning tools used for object classification are presented. The…

Instrumentation and Methods for Astrophysics · Physics 2015-11-17 Martin Topinka

Transient detection and flux measurement via image subtraction stand at the base of time domain astronomy. Due to the varying seeing conditions, the image subtraction process is non-trivial, and existing solutions suffer from a variety of…

Instrumentation and Methods for Astrophysics · Physics 2016-10-12 Barak Zackay , Eran O. Ofek , Avishay Gal-Yam

Existing RGB-Event visual object tracking approaches primarily rely on conventional feature-level fusion, failing to fully exploit the unique advantages of event cameras. In particular, the high dynamic range and motion-sensitive nature of…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Shiao Wang , Xiao Wang , Haonan Zhao , Jiarui Xu , Bo Jiang , Lin Zhu , Xin Zhao , Yonghong Tian , Jin Tang

We present a new method that combines fluorescence correlation spectroscopy (FCS) on the microsecond time scale with fluorescence antibunching measurements on the nanosecond time scale for measuring photophysical rate constants of…

Chemical Physics · Physics 2022-03-28 Damir Sakhapov , Ingo Gregor , Narain Karedla , Jörg Enderlein

Fast Radio Bursts (FRBs) are millisecond transient radio events with a high energy. By identifying the origin of the \textbf{burst}, it is possible to measure the redshift of the host galaxy, which can be used to constrain cosmological and…

Cosmology and Nongalactic Astrophysics · Physics 2024-02-27 Thais Lemos , Rodrigo S. Gonçalves , Joel C. Carvalho , Jailson S. Alcaniz

To understand the physical processes governing accretion discs we can study active galactic nuclei (AGN), X-ray binary systems (XRBs) and cataclysmic variables (CVs). It has been shown that XRBs and CVs show similar observational properties…

Solar and Stellar Astrophysics · Physics 2018-09-12 E. Aranzana , S. Scaringi , E. Körding , V. S. Dhillon , D. L. Coppejans

Moving objects leave extended tracks in optical images acquired with a telescope that is tracking stars or other targets. By searching images for these tracks, one can obtain statistics on populations of space debris in Earth orbit. The…

Space Physics · Physics 2018-11-14 P. Hickson

This paper addresses the problem of detecting false data injection (FDI) attacks in a distributed network without a fusion center, represented by a connected graph among multiple agent nodes. Each agent node is equipped with a sensor, and…

Systems and Control · Electrical Eng. & Systems 2024-02-16 Saqib Abbas Baba , Arpan Chattopadhyay

As the third paper in the multiple-part series, we report the statistical properties of radio bursts detected from the repeating fast radio burst (FRB) source FRB 20201124A with the Five-hundred-meter Aperture Spherical radio telescope…

We analyzed data obtained by the SPI telescope onboard the INTEGRAL observatory to search for short transient events with a duration from 1 ms to a few tens of seconds. An algorithm for identifying gamma-ray events against the background of…

High Energy Astrophysical Phenomena · Physics 2015-06-19 P. Yu. Minaev , A. S. Pozanenko , S. V. Molkov , S. A. Grebenev

Event-based cameras (EBCs) are an attractive sensing modality for surveillance due to their reporting of pixel-level radiance changes with microsecond resolution and high dynamic range, enabling motion extraction while suppressing…

Optics · Physics 2026-05-18 Megan Birch , James Rick , Adrish Kar , Jason Zutty , Joseph L. Greene

Transient astrophysical events are characterized by short timescales, high energy, and multi-wavelength radiation, often accompanied by violent energy releases. These phenomena are a major focus of modern astronomical research. To reveal…