Last Updated: 2004oct14

AstroStatistics Workshop

Data Analysis Challenges in Astrophysics

High-Energy Astrophysics Division Meeting, New Orleans

Friday, 6:30-8:30pm, Sep 10, 2004

hea-www.harvard.edu/AstroStat/HEAD2004

Analysis Challenges

• Contact: Vinay Kashyap (SAO)

  Announcement (ppt)

   

• Jeff Scargle (NASA/Ames)

  Data Analysis Through Segmentation: Bayesian Blocks and Beyond

  Abstract (txt)

  Presentation (staroffice/ppt)

  References and resources (html)

   

• Xiao-li Meng (Harvard U)

  An Introductory Overview of Statistical Methods for Discrete Time Series

  Abstract (txt)

   

• Jim Chiang (GLAST)

  Challenges in Analyzing Data from the GLAST Large Area Telescope

  Abstract (txt)

  Presentation (ppt)

  Q&A

   

Panel Discussion: Challenges Met

• Moderator: Alanna Connors (Eureka)
• Ashish Mahabal (CalTech)

  VOStat

  presentation (ppt)

  web page: www.vostat.org

   

• David van Dyk (UC Irvine)

  Bayesian fitting of Low Count X-ray Spectra (BLoCXS) and Bayesian Estimation of Hardness Ratios (BEHR)

  presentation (pdf)

   

• Tom Aldcroft (SAO)

  Distributions and Uncertainties in Hydrogen (DUH)

  presentation (ppt)

   

• Aneta Siemiginowska (SAO)

  Sherpa: features and demo

  presentation (pdf)

   

• Tom Loredo (Cornell)

  Python tools

  presentation (pdf)

   

• Keith Arnaud (GSFC)

  New features in XSPEC, and a modest proposal

  presentation (ppt)

  reactions

   

• Discussion

  -- Center for Astro-Statistics at Penn State

  Description

  web page: astrostatistics.psu.edu/stat05.html

  -- XAssist

  -- Do you compound your priors if you save your posteriors?

  comments

  -- Is there a way to tell what is the best method to use for my data?

  comments

  -- "Consulting"

  comments

  -- A rogue's gallery of "Bad AstroStatistics"?

  comments

  -- Energy Quantiles as an alternative to hardness ratios

  comments (ppt)

Posters of interest

[5.01] Reconstructing Stellar DEMs from X-ray Spectra

H. Kang (Department of Statistics, Harvard University), D. van Dyk (Department of Statistics, University of California at Irvine), V. Kashyap (Harvard-Smithsonian Center for Astrophysics), A. Connors (Eureka Scientific)

Abstract

Poster (ps)

Poster (pdf)

[5.02] An Ion-by-Ion Technique for Determination of Temperature Distributions and Application to Nine Hot Stars.

P. S. Wojdowski, N. S. Schulz (Massachusetts Institute of Technology)

Abstract

[16.26] Event Reconstruction and Background Identification for Advanced Compton Telescopes

A. Zoglauer (MPE/UCB), G. Weidenspointner (CESR), C. Wunderer, S. Boggs (UCB), R.M. Kippen (LANL), ACT Collaboration

Abstract

[16.27] Computing Hardness Ratios with Poissonian Errors

D. A. van Dyk (Department of Statistics, University of California, Irvine), T. Park (Department of Statistics, Harvard University), V. L. Kashyap, A. Zezas (Harvard Smithsonian Center for Astrophysics)

Abstract

Poster (pdf)

[16.29] XSPEC: Progress and Plans

K. Arnaud (GSFC and University of Maryland College Park)

Abstract

[16.30] Interpreting the Discrete Correlation Function

L. M. Boone, T. G. Spears (The College of Wooster)

Abstract

[16.31] Detecting Variations in Source Intensity for Poisson Data

Y. Yu, X.L. Meng (Dept. of Statistics, Harvard Univ.), D. Van Dyk (Dept. of Statistics, UC Irvine), V. Kashyap, A. Zezas (Smithsonian Astrophysical Observatory, Harvard Univ.)

Abstract

Poster (ps)

[16.32] Self-consistent Modeling of the logN-logS in the Poisson Limit

E. Sourlas (CHQOER), V. Kashyap, A. Zezas (SAO), D. van Dyk (UC-Irvine)

Abstract

Poster (pdf)

Poster (ps)

[16.33] Fitting Narrow Emission Lines in X-ray Spectra

T. Park (Harvard University), D. van Dyk (University of California at Irvine), A. Siemiginowska (Harvard-Smithsonian Center for Astrophysics)

Abstract

Poster (pdf)

[16.34] XAssist: A System for the Automation of X-ray Astrophysics Analysis

A. Ptak (JHU)

Abstract

[16.35] Accounting for Pileup in Chandra ACIS Spectra

Y. Yu (Dept. of Statistics, Harvard Univ.), D. Van Dyk (Dept. of Statistics, UC Irvine), A. Siemiginowska, P. Freeman, A. Zezas, V. Kashyap (Smithsonian Astrophysical Observatory, Harvard Univ.), A. Connors (Eureka Scientific)

Abstract

Poster (ps)

[16.36] Relative Point Source Sensitivities with Tracking Compton Telescopes

M. Polsen (IGPP, UC Riverside), A. Aky�z (Physics Dept., University of Cukurova, Adana, Turkey), D. Bhattacharya, T. J. O'Neill (IGPP, UC Riverside), J. Samimi (Physics Dept., Sharif Technical University, Tehran, Iran), A. D. Zych (IGPP, UC Riverside)

Abstract

[16.37] Monte Carlo Simulations of a System of 2 Very Large Cherenkov Telescopes

S. B. Hughes, H. Krawczynski (Washington University in St. Louis), A. Falcone (Purdue University), I. Jung, J. Buckley (Washington University in St. Louis)

Abstract

[24.20] A Principal Component Analysis of X-ray Spectral Variations in Four Galactic SNRs

J. S. Warren, J. P. Hughes (Rutgers University)

Abstract

[25.08] Quantile analysis on faint X-ray sources of ChaMPlane survey

J. Hong, J. Grindlay, E. Schlegel, S. Laycock, M. van den Berg, P. Zhao, X. Koenig (CfA), H. Cohn, P. Lugger, A. Rogel (IU)

Abstract

[##.##] Inference -- A Python Package for Astrostatistics

Tom Loredo (Dept. of Astronomy, Cornell University), Alanna Connors (Eureka Scientific), and Travis Oliphant (Dept. of Electrical & Computer Engineering, Brigham Young University)

Poster (pdf)