The AstroStat Slog » EGRET http://hea-www.harvard.edu/AstroStat/slog Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders Fri, 09 Sep 2011 17:05:33 +0000 en-US hourly 1 http://wordpress.org/?v=3.4 [ArXiv] 1st week, June 2008 http://hea-www.harvard.edu/AstroStat/slog/2008/arxiv-1st-week-june-2008/ http://hea-www.harvard.edu/AstroStat/slog/2008/arxiv-1st-week-june-2008/#comments Mon, 09 Jun 2008 01:45:45 +0000 hlee http://hea-www.harvard.edu/AstroStat/slog/?p=328 Despite no statistic related discussion, a paper comparing XSPEC and ISIS, spectral analysis open source applications might bring high energy astrophysicists’ interests this week.

  • [astro-ph:0806.0650] Kimball and Ivezi\’c
    A Unified Catalog of Radio Objects Detected by NVSS, FIRST, WENSS, GB6, and SDSS (The catalog is available HERE. I’m always fascinated with the possibilities in catalog data sets which machine learning and statistics can explore. And I do hope that the measurement error columns get recognition from non astronomers.)

  • [astro-ph:0806.0820] Landau and Simeone
    A statistical analysis of the data of Delta \alpha/ alpha from quasar absorption systems (It discusses Student t-tests from which confidence intervals for unknown variances and sample size based on Type I and II errors are obtained.)

  • [stat.ML:0806.0729] R. Girard
    High dimensional gaussian classification (Model based – gaussian mixture approach – classification, although it is often mentioned as clustering in astronomy, on multi- dimensional data is very popular in astronomy)

  • [astro-ph:0806.0520] Vio and Andreani
    A Statistical Analysis of the “Internal Linear Combination” Method in Problems of Signal Separation as in CMB Observations (Independent component analysis, ICA is discussed)

  • [astro-ph:0806.0560] Nobel and Nowak
    Beyond XSPEC: Towards Highly Configurable Analysis (The flow of spectral analysis with XSPEC and Sherpa has not been accepted smoothly; instead, it has been a personal struggle. It seems the paper considers XSPEC as a black box, which I completely agree with. The main objective of the paper is comparing XSPEC and ISIS)

  • [astro-ph:0806.0113] Casandjian and Grenier
    A revised catalogue of EGRET gamma-ray sources (The maximum likelihood detection method, which I never heard from statistical literature, is utilized)
]]> http://hea-www.harvard.edu/AstroStat/slog/2008/arxiv-1st-week-june-2008/feed/ 0 [ArXiv] 1st week, Nov. 2007 http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-1st-week-nov-2007/ http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-1st-week-nov-2007/#comments Fri, 02 Nov 2007 21:59:08 +0000 hlee http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-1st-week-nov-2007/ To be exact, the title of this posting should contain 5th week, Oct, which seems to be the week of EGRET. In addition to astro-ph papers, although they are not directly related to astrostatistics, I include a few statistics papers which may be profitable for astronomical data analysis.

  • [astro-ph:0710.4966]
    Uncertainties of the antiproton flux from Dark Matter annihilation in comparison to the EGRET excess of diffuse gamma rays by Iris Gebauer
  • [astro-ph:0710.5106]
    The dark connection between the Canis Major dwarf, the Monoceros ring, the gas flaring, the rotation curve and the EGRET excess of diffuse Galactic Gamma Rays by W. de Boer et.al.
  • [astro-ph:0710.5119]
    Determination of the Dark Matter profile from the EGRET excess of diffuse Galactic gamma radiation by Markus Weber
  • [astro-ph:0710.5171]
    Systematic Bias in Cosmic Shear: Beyond the Fisher Matrix by A.Amara and A. Refregier
  • [astro-ph:0710.5560]
    Principal Component Analysis of the Time- and Position-Dependent Point Spread Function of the Advanced Camera for Surveys by M.J. Jee et.al.
  • [astro-ph:0710.5637]
    A method of open cluster membership determination by G. Javakhishvili et.al.
  • [stat.CO:0710.5670]
    An Elegant Method for Generating Multivariate Poisson Data by I. Yahav and G.Shmueli
  • [astro-ph:0710.5788]
    Variations in Stellar Clustering with Environment: Dispersed Star Formation and the Origin of Faint Fuzzies by B. G. Elmegreen
  • [math.ST:0710.5749]
    On the Laplace transform of some quadratic forms and the exact distribution of the sample variance from a gamma or uniform parent distribution by T.Royen
  • [math.ST:0710.5797]
    The Distribution of Maxima of Approximately Gaussian Random Fields by Y. Nardi, D.Siegmund and B.Yakir
  • [astro-ph:0711.0177]
    Maximum Likelihood Method for Cross Correlations with Astrophysical Sources by R.Jansson and G. R. Farrar
  • [stat.ME:0711.0198]
    A Geometric Approach to Confidence Sets for Ratios: Fieller’s Theorem, Generalizations, and Bootstrap by U. von Luxburg and V. H. Franz
]]> http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-1st-week-nov-2007/feed/ 1 [ArXiv] 1st week, Oct. 2007 http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-1st-week-oct-2007/ http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-1st-week-oct-2007/#comments Sat, 06 Oct 2007 16:45:19 +0000 hlee http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-1st-week-oct-2007/ This week, instead of only filtering AstroStatistics related papers from arxiv, I chose additional arxiv/astro-ph papers related to CHASC folks’ astrophysical projects. Some of papers you see from this week do not have sophisticated statistical analysis but contain data from specific satellites and possibly relevant information related to CHASC projects. Due to the CHACS’ long history (we are celebrating the 10th birthday this year) and my being a newbie to CHASC, I may not pick up all papers related to the projects of current, former, and future CHASC members and dedicated slog readers. For creating a satisfying posting every week, your inputs are welcome to improve my adaptive filter. For the list of this week, click the following.

  • [astro-ph:0709.4598]
    Upper Limits from Hess Observations of AGN in 2005-2007 by Benbow and Buehler
  • [physics.data-an:0709.3662] provides physical insights toward some families of probability distributions
    Econophysics, Statistical Mechanics Approach to by V.M.Yakovenko
  • [astro-ph:0709.4488] could motivate developing machine learning algorithms.
    Determining the Type, Redshift, and Age of a Supernova Spectrum by S. Blondin and J.L. Tonry
  • [astro-ph:0709.4531]
    A Problem with the Clustering of Recent Measures of the Distance to the Large Magellanic Cloud by B. E. Schaefer
  • [astro-ph:0709.4601]
    Multiple stellar populations in Globular Clusters: collection of information from the Horizontal Branch by F. D’Antona and V. Caloi
  • [astro-ph:0710.0370]
    MegaPipe: the MegaCam image stacking pipeline at the Canadian Astronomical Data Centre by S. D. J. Gwyn
  • [astro-ph:0710.0373]
    To Bin or Not To Bin: Decorrelating the Cosmic Equation of State by R. de Putter and E. V. Linder
  • [astro-ph:0710.0619] About EGRET and GLAST
    Unresolved Unidentified Source Contribution to the Gamma-ray Background by V. Pavlidou et. al.
  • [astro-ph:0710.0757] About SOHO(MDI) and RHESSI
    The Cause of Photospheric and Helioseismic Responses to Solar Flares: High-Energy Electrons or Protons? by A. G. Kosovichev
  • [astro-ph:0710.0774]
    NGC 346 in the Small Magellanic Cloud. III. Recent Star Formation and Stellar Clustering Properties in the Bright HII Region N 66 by E. Hennekemper et.al
  • [astro-ph:0710.0874] discusses GLAST as well.
    Constraints on Galactic populations of gamma-ray emitters from the unidentified EGRET sources by J. M. Siegal-Gaskins et.al.
  • [astro-ph:0710.0875]
    Evidence of Cosmic Evolution of the Stellar Initial Mass Function by P. van Dokkum
]]> http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-1st-week-oct-2007/feed/ 0 [ArXiv] Gamma-ray albedo of the moon, Aug. 15, 2007 http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-gamma-ray-albedo-of-the-moon/ http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-gamma-ray-albedo-of-the-moon/#comments Thu, 16 Aug 2007 22:34:23 +0000 hlee http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-gamma-ray-albedo-of-the-moon/ From arxiv/astro-ph:0705.3856 Gamma-ray albedo of the moon by Moskalenko and Porter

The title sounds very interesting although the significance of albedo spectra is not recognized for a statistician. This study was performed to utilize GLAST and PAMELA via Monte Carlo simulations (the toolkit for MC was GEANT 8.2) with EGRET data.

]]> From arxiv/astro-ph:0705.3856
Gamma-ray albedo of the moon by Moskalenko and Porter

The title sounds very interesting although the significance of albedo spectra is not recognized by a statistician. This study was performed to utilize GLAST and PAMELA via Monte Carlo simulations (the toolkit for MC was GEANT 8.2) with EGRET data.

]]> http://hea-www.harvard.edu/AstroStat/slog/2007/arxiv-gamma-ray-albedo-of-the-moon/feed/ 0