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Related papers: Towards Rate Estimation for Transient Surveys I: A…

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There is an increasing number of large, digital, synoptic sky surveys, in which repeated observations are obtained over large areas of the sky in multiple epochs. Likewise, there is a growth in the number of (often automated or robotic)…

Two generations of a novel detector for high-resolution transmission imaging and spectrometry of fast-neutrons are presented. These devices are based on a hydrogenous fiber scintillator screen and single- or multiple-gated intensified…

We present a sample of 23 spectroscopically confirmed Type Ia supernovae that were discovered in the background of galaxy clusters targeted by ROTSE-IIIb and use up to 18 of these to determine the local (z = 0.05) volumetric rate. Since our…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Robert M. Quimby , Fang Yuan , Carl Akerlof , J. Craig Wheeler , Michael S. Warren

Detection of moving sources over complicated background is important for several reasons. First is measuring the astrophysical motion of the source. Second is that such motion resulting from atmospheric scintillation, color refraction, or…

Instrumentation and Methods for Astrophysics · Physics 2024-03-18 O. Springer , E. O. Ofek , B. Zackay , R. Konno , A. Sharon , G. Nir , A. Rubin , A. Haddad , J. Friedman , L. Schein Lubomirsky , I. Aizenberg , A. Krassilchtchikov , A. Gal-Yam

We describe the fast transient classification algorithm in the center of the kilonova (KN) science module currently implemented in the Fink broker and report classification results based on simulated catalogs and real data from the ZTF…

Instrumentation and Methods for Astrophysics · Physics 2023-10-06 B. Biswas , E. E. O. Ishida , J. Peloton , A. Moller , M. V. Pruzhinskaya , R. S. de Souza , D. Muthukrishna

We develop a method for predicting the yield of transiting planets from a photometric survey given the parameters of the survey (nights observed, bandpass, exposure time, telescope aperture, locations of the target fields, observational…

Astrophysics · Physics 2009-11-13 Thomas G. Beatty , B. Scott Gaudi

The observed delay-time distribution (DTD) of Type-Ia supernovae (SNe Ia) is a valuable probe of SN Ia progenitors and physics, and of the role of SNe Ia in cosmic metal enrichment. The SN Ia rate in galaxy clusters as a function of cluster…

Astrophysics of Galaxies · Physics 2018-07-11 Matan Friedmann , Dan Maoz

We investigate the capability of the Probe Of Extreme Multi-Messenger Astrophysics (POEMMA) in performing Target-of-Opportunity (ToO) neutrino observations. POEMMA will detect tau neutrinos via Cherenkov radiation from their upward-moving…

High Energy Astrophysical Phenomena · Physics 2021-01-04 Tonia M. Venters , Mary Hall Reno , John F. Krizmanic , Luis A. Anchordoqui , Claire Guépin , Angela V. Olinto

Large modern surveys require efficient review of data in order to find transient sources such as supernovae, and to distinguish such sources from artefacts and noise. Much effort has been put into the development of automatic algorithms,…

The Australian Square Kilometre Array Pathfinder (ASKAP) will give us an unprecedented opportunity to investigate the transient sky at radio wavelengths. In this paper we present VAST, an ASKAP survey for Variables and Slow Transients. VAST…

Though there has been a significant amount of work investigating the early stages of low-mass star formation in recent years, the evolution of the mass assembly rate onto the central protostar remains largely unconstrained. Examining in…

In this paper we advance the simple analytic photometric redshift estimator for Type Ia supernovae (SNe Ia) proposed by Wang (2007), and use it to study simulated SN Ia data. We find that better than 0.5% accuracy in z_phot (with…

Astrophysics · Physics 2009-11-13 Yun Wang , Gautham Narayan , Michael Wood-Vasey

We explore the idea that the Type Ia supernovae (SNe Ia) rate consists of two components: a prompt piece that is proportional to the star formation rate (SFR) and an extended piece that is proportional to the total stellar mass. We fit the…

Astrophysics · Physics 2011-01-28 Evan Scannapieco , Lars Bildsten

We re-analyze the detectability of large scale dark flow (or local bulk flow) with respect to the CMB background based upon the redshift-distance relation for Type Ia supernovae (SN Ia). We made two independent analyses: one based upon…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-19 G. J. Mathews , B. Rose , P. Garnavich , D. Yamazaki , T. Kajino

We describe our ongoing program designed to measure the SN-Ia rate in a sample of massive z=0.5-0.9 galaxy clusters. The SN-Ia rate is a poorly known observable, especially at high z, and in cluster environments. The SN rate and its…

This paper presents a method for detecting salient objects in videos where temporal information in addition to spatial information is fully taken into account. Following recent reports on the advantage of deep features over conventional…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Trung-Nghia Le , Akihiro Sugimoto

We present the results of the first transient survey from the Owens Valley Radio Observatory Long Wavelength Array (OVRO-LWA) using 31 hr of data, in which we place the most constraining limits on the instantaneous transient surface density…

Classification and characterization of variable phenomena and transient phenomena are critical for astrophysics and cosmology. These objects are commonly studied using photometric time series or spectroscopic data. Given that many ongoing…

Instrumentation and Methods for Astrophysics · Physics 2020-01-08 Javiera Astudillo , Pavlos Protopapas , Karim Pichara , Pablo Huijse

We describe the process of stacking radio interferometry visibilities to form a deep composite image and its application to the observation of transient phenomena. We apply "visibility stacking" to 46 archival Very Large Array observations…

Solar and Stellar Astrophysics · Physics 2015-05-28 Paul Hancock , Bryan M. Gaensler , Tara Murphy
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