Intermediate Palomar Transient Factory: Realtime Image Subtraction Pipeline

@article{Cao2016IntermediatePT,
  title={Intermediate Palomar Transient Factory: Realtime Image Subtraction Pipeline},
  author={Yi Cao and Peter E. Nugent and Mansi M. Kasliwal},
  journal={Publications of the Astronomical Society of the Pacific},
  year={2016},
  volume={128}
}
A fast-turnaround pipeline for realtime data reduction plays an essential role in discovering and permitting follow-up observations to young supernovae and fast-evolving transients in modern time-domain surveys. In this paper, we present the realtime image subtraction pipeline in the intermediate Palomar Transient Factory. By using high-performance computing, efficient databases, and machine-learning algorithms, this pipeline manages to reliably deliver transient candidates within 10 minutes of… 

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Predicting Resource Requirement in Intermediate Palomar Transient Factory Workflow

  • Qiao KangA. Sim Kesheng Wu
  • Computer Science
    2020 20th IEEE/ACM International Symposium on Cluster, Cloud and Internet Computing (CCGRID)
  • 2020
A machine learning strategy is proposed for quickly identifying astronomical transients from synoptic surveys and its effectiveness is demonstrated using a set of timing measurements from the intermediate Palomar Transient Factory (iPTF) workflow.

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References

SHOWING 1-10 OF 30 REFERENCES

Using machine learning for discovery in synoptic survey imaging data

This work presents a machine learning (ML) framework for discovery of variability in time-domain imaging surveys and shows that the classification methodology is insensitive to mis-labelled training data up to a contamination of nearly 10%, making it easier to compile sufficient training sets for accurate performance in future surveys.

The Palomar Transient Factory: System Overview, Performance, and First Results

The Palomar Transient Factory (PTF) is a fully-automated, wide-field survey aimed at a systematic exploration of the optical transient sky. The transient survey is performed using a new 8.1 square

The rise of SN2014J in the nearby galaxy M82

We report on the discovery of SN 2014J in the nearby galaxy M 82. Given its proximity, it offers the best opportunity to date to study a thermonuclear supernova over a wide range of the

The Zwicky Transient Facility: Observing System

The Zwicky Transient Facility (ZTF) Observing System (OS) is the data collector for the ZTF project to study astrophysical phenomena in the time domain. ZTF OS is based upon the 48 inch aperture

The Palomar Transient Factory Photometric Calibration

The Palomar Transient Factory (PTF) provides multiple epoch imaging for a large fraction of the celestial sphere. Here, we describe the photometric calibration of the PTF data products that allows

DISCOVERY, PROGENITOR AND EARLY EVOLUTION OF A STRIPPED ENVELOPE SUPERNOVA iPTF13bvn

The intermediate Palomar Transient Factory reports our discovery of a young supernova, iPTF13bvn, in the nearby galaxy, NGC 5806 (22.5 Mpc). Our spectral sequence in the optical and infrared suggests

THE RISE OF SN 2014J IN THE NEARBY GALAXY M82

We report on the discovery of SN 2014J in the nearby galaxy M82. Given its proximity, it offers the best opportunity to date to study a thermonuclear supernova (SN) over a wide range of the

iPTF14yb: THE FIRST DISCOVERY OF A GAMMA-RAY BURST AFTERGLOW INDEPENDENT OF A HIGH-ENERGY TRIGGER

We report here the discovery by the Intermediate Palomar Transient Factory (iPTF) of iPTF14yb, a luminous ( M r ≈ − 27.8 ?> mag), cosmological (redshift 1.9733), rapidly fading optical transient. We

PROPER IMAGE SUBTRACTION—OPTIMAL TRANSIENT DETECTION, PHOTOMETRY, AND HYPOTHESIS TESTING

A closed-form statistic is derived that is mathematically proven to be the optimal transient detection statistic in the limit of background-dominated noise, and shows that the optimal way to prepare a reference image is the proper image coaddition presented in Zackay & Ofek.

The Palomar Transient Factory photometric catalog 1.0

We constructed a photometrically calibrated catalog of non-variable sources from the Palomar Transient Factory (PTF) observations. The first version of this catalog presented here, the PTF