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6121. http://hea-www.harvard.edu/AstroStat/Stat310_0809/hl_20080909.pdf
Introduction Assessing Model Preference H. Lee Harvard Smithsonian Center for Astrophysics September 9, 2008 Hyunso ok Lee Introduction Motivation ґVinay called me to get some the 3rd opinion about a.k.a. Vuoung's test. ... Hyunso ok Lee Introduction Astronomer's Model Selection I. Reduced ґFirst, they bin (group) data to increase S/N for 2 fitting. ... Hyunso ok Lee Introduction P(choosing model A over model B) We assume the best fit estimators are unbiased. ... Hyunso ok Lee ...
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Ссылки http://hea-www.harvard.edu/AstroStat/Stat310_0809/hl_20080909.pdf -- 125.8 Кб -- 09.09.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/Stat310_0809/hl_20080909.pdf -- 125.8 Кб -- 09.09.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/Stat310_0809/hl_20080909.pdf -- 125.8 Кб -- 09.09.2008
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6122. http://hea-www.harvard.edu/AstroStat/etc/spie_2008_7016_OP_klsmrdrzicvp.pdf
How to handle calibration uncertainties in high-energy Astrophysics Vinay L. Kashyapa , Hyunsook Leea , Aneta Siemiginowskaa , Jonathan McDowella , Arnold Rotsa , Jeremy ... Arlington, MA, USA; d Univ. of California, Irvine, CA, USA; e Univ. of Pittsburgh, Pittsburgh, PA, USA ABSTRACT Unlike statistical errors , whose importance has been well established in astronomical applications, uncertainties in instrument calibration are generally ignored ... That is, the calibration products R(.) ...
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Ссылки http://hea-www.harvard.edu/AstroStat/etc/spie_2008_7016_OP_klsmrdrzicvp.pdf -- 123.3 Кб -- 04.09.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/etc/spie_2008_7016_OP_klsmrdrzicvp.pdf -- 123.3 Кб -- 04.09.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/etc/spie_2008_7016_OP_klsmrdrzicvp.pdf -- 123.3 Кб -- 04.09.2008
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6123. http://hea-www.harvard.edu/PINTofALE/pro/mk_efold.pro
function mk_efold ,x, norm , scale , yoff , pder , verbose = verbose , _extra=e ;+ ;function mk_efold ; returns an exponential, NORM *exp(-x* SCALE )+ YOFF ; ;syntax ; f= mk_efold (x, norm , scale , yoff , pder , verbose = verbose ) ; ;parameters ; x [ INPUT array; required] where F(X) must be computed ; norm [ INPUT ; required] normalization for exponential ; scale [ ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/pro/mk_efold.pro -- 3.0 Кб -- 29.08.2008
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6124. http://hea-www.harvard.edu/XJET/image_doc.txt
... XJET IMAGE DESCRIPTOR DOCUMENT - ( filename should be identical to image except for . fits - .txt) ------------- cut here ------------------------------------------ FILENAME : # src-detector-freq-date SOURCE: IMAGE NAME: # concise label for thumbnail OBSCODE: # seq.#, obsid, or other useful number FILETYPE: fits primary array # change to 'uv' or 'events' if warranted ARRAY SIZE : # single entry denotes a square array PIXEL ...
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Ссылки http://hea-www.harvard.edu/XJET/image_doc.txt -- 2.2 Кб -- 14.08.2008
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6125. http://hea-www.harvard.edu/~fine/Tech/multi-rsh
... Version 1.0 - 4/26/04 - Initial Version #Version 1.1 - 5/26/05 - Bug Fix: non-existent host translated to localhost #Version 1.2 - 12/29/06 - Bug Fix: typo at line 90, wrong var in chop # if ($ != 0) { print I have to run as root!\n ; exit (1); } $|=1; use Socket; @killlist=(HUP,INT,TERM,KILL); $SIG{'INT'}=report; if ($# ARGV 1) { usage; exit (1); } $numconns=20; $timeout=15; $ user =(getpwuid($ ))[0]; while ($ ...
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Ссылки http://hea-www.harvard.edu/~fine/Tech/multi-rsh -- 7.9 Кб -- 01.08.2008
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6126. http://hea-www.harvard.edu/XJET/image_policy.txt
filename: image_policy Date: 2002 jul 15 originat: deh tlm: 2008 July 17 Subject: XJET policy on images. ... All images shall be bonafide fits files with WCS. While most images will be primary fits arrays, we realize that useful files in some cases could be edited and calibrated uv files (e.g. from the VLA) since then a user can taper to his requirements etc; or events files which have been processed (e.g. Chandra data which have been destreaked and/or had high background intervals filtered). ...
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Ссылки http://hea-www.harvard.edu/XJET/image_policy.txt -- 4.1 Кб -- 01.08.2008
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6127. http://hea-www.harvard.edu/PINTofALE/pro/updatid.pro
... 1).EMIS))[1] ne szem[1] then begin ; don't touch it if the array sizes are different message,'IDSTR.( EMIS incompatible with EMIS ; ignoring',/informational todoem=' nada ' endif endif ; if nl gt 2 and nl eq ns then todos='locmax' if todof ne ' nada ' then todos=' nada ' ; dig=0 if keyword_set(digit) then dig=1 if dig eq 1 then begin if todos eq ' nada ' then begin message,'spectrum not defined; ignoring request for interactive use',/info dig=0 endif else begin if todof ne ' ...
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Ссылки http://hea-www.harvard.edu/PINTofALE/pro/updatid.pro -- 10.8 Кб -- 14.07.2008
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6128. http://hea-www.harvard.edu/ChaMPlane/papers/0805-draft-jaesub-xray_dist.ps
DRAFT VERSION JUNE 12, 2008 Preprint typeset using L A T E X style emulateapj v. 6/22/04 RADIAL DISTRIBUTION OF XґRAY POINT SOURCES NEAR THE GALACTIC CENTER JAESUB HONG 1* , MAUREEN VAN DEN BERG 1 , JONATHAN E. GRINDLAY 1 , XAVIER KOENIG 1 , SILAS LAYCOCK 2 AND PING ZHAO 1 Draft version June 12, 2008 ABSTRACT We present the logNґlogS and spatial distributions of Xґray point sources in the Galactic Bulge (GB) fields. ... TABLE 2 CATALOG OF XґRAY POINT SOURCES IN THE WINDOW FIELDS Source Posi. ...
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Ссылки http://hea-www.harvard.edu/ChaMPlane/papers/0805-draft-jaesub-xray_dist.ps -- 2015.5 Кб -- 12.06.2008
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6129. http://hea-www.harvard.edu/vlp_m33_public/rt08a.pdf
... Here, we present deep (300ks) X-ray imagery of NGC604 obtained as part of the Chandra ACIS Survey of M33 (ChASeM33), which show highly structured X-ray emission covering 70% of the full H extent of NGC604. The main bubbles and cavities in NGC604 are filled with hot (k T = 0.5 keV) X-ray emitting gas and X-ray spectra extracted from these regions indicate that the gas is thermal. ... These values are consistent with a stellar mass loss bubble entirely powered by about 200 OB-stars. ... Fig. 2b). ...
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Ссылки http://hea-www.harvard.edu/vlp_m33_public/rt08a.pdf -- 1183.9 Кб -- 09.06.2008
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6130. http://hea-www.harvard.edu/AstroStat/Stat310_0708/ta_20080422.pdf
... Individual SEDs ґ upper limits constrain physical models Survival analysis for a sample Stacking ґ mean properties of sample Chandra X-ray data (faint point sources ) are photon-limited with low background = stacking in X-rays is very effective X-ray Stacking 2008-Apr-22 Astrostats Stacking basics: Make an image Define ... X-ray Stacking 2008-Apr-22 Astrostats Discussion! ... X-ray Stacking 2008-Apr-22 Astrostats ...
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Ссылки http://hea-www.harvard.edu/AstroStat/Stat310_0708/ta_20080422.pdf -- 369.7 Кб -- 21.04.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/Stat310_0708/ta_20080422.pdf -- 369.7 Кб -- 21.04.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/Stat310_0708/ta_20080422.pdf -- 369.7 Кб -- 21.04.2008
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6131. http://hea-www.harvard.edu/AstroStat/HEAD2008/poster_aconnors.pdf
... PROBLEMS: "Unknown" (i.e. no physics model) components; What's a "Good-Enough-Fit" (e.g. Poisson)? ... ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR ...
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/poster_aconnors.pdf -- 2526.2 Кб -- 05.04.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/poster_aconnors.pdf -- 2526.2 Кб -- 05.04.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/poster_aconnors.pdf -- 2526.2 Кб -- 05.04.2008
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6132. http://hea-www.harvard.edu/AstroStat/HEAD2008/poster_tloredo.pdf
... Population, Observables Measurements Inverse methods try to undo the survey process by correcting catalog estimates. ... Simulations Simulate a (peak) flux survey catalog (producing a number counts or log N ґ log S distribution): Ї Draw source fluxes from a 3-parameter slowly rolling power-law distribution (0 is a fiducial flux): - C2 log () = log 0 - C1 log 0 Amplitude at 0 Log slope at 0 Rate of change of log slope log () Accounting For Source Uncertainties Ignoring ...
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/poster_tloredo.pdf -- 223.4 Кб -- 01.04.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/poster_tloredo.pdf -- 223.4 Кб -- 01.04.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/poster_tloredo.pdf -- 223.4 Кб -- 01.04.2008
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6133. http://hea-www.harvard.edu/AstroStat/HEAD2008/talk_dvandyk.pdf
Hypothesis Testing Mathematical Computations Numerical Computations Fur ther Reading Hypothesis Testing David A. van Dyk1 1 Depar tment of Statistics University of California, Irvine 2008 HEAD Meetings David A. van Dyk Statistics : Handle with Care Hypothesis Testing Mathematical Computations Numerical Computations Fur ther Reading Outline 1 Hypothesis ... H0 : No emission line. ... The test statistic must behavior differently under the alternative hypothesis. ...
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/talk_dvandyk.pdf -- 136.1 Кб -- 01.04.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/talk_dvandyk.pdf -- 136.1 Кб -- 01.04.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/talk_dvandyk.pdf -- 136.1 Кб -- 01.04.2008
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6134. http://hea-www.harvard.edu/AstroStat/HEAD2008/talk_efeigelson.pdf
... The first task of a statistician is cross-examination of data (R. A. Fisher) ґ [Statistics is] the study of algorithms for data analysis (R. Beran) ґ A statistical inference carries us from observations to conclusions about the populations sampled (D. R. Cox) ґ Some statistical models are helpful in a given context, and some are not (T. Speed, addressing astronomers) ґ There is no need for these hypotheses ... Also groups at CMU, Berkeley, Michigan Penn State, Cornell, SAMSI. ...
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/talk_efeigelson.pdf -- 63.2 Кб -- 01.04.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/talk_efeigelson.pdf -- 63.2 Кб -- 01.04.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/talk_efeigelson.pdf -- 63.2 Кб -- 01.04.2008
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6135. http://hea-www.harvard.edu/AstroStat/HEAD2008/haiku_miyaji.pdf
http://saturn.phys.cmu.edu/cstack (password controled, use user=password=guest for CDF N&S
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/haiku_miyaji.pdf -- 229.8 Кб -- 01.04.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/haiku_miyaji.pdf -- 229.8 Кб -- 01.04.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/haiku_miyaji.pdf -- 229.8 Кб -- 01.04.2008
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6136. http://hea-www.harvard.edu/AstroStat/HEAD2008/haiku_tloredo.pdf
Mo deling GRB (and other) p opulations: Some lessons from multilevel mo deling Tom Loredo and Ira Wasserman, Cornell U. Goal: Infer properties of a population from measurements of observables with measurement error and selection effects Multilevel models: Ї Ї Ї Upper level : Draw observables from (adjusted) pop'n dist'n Lower level : Draw measurements from independent data distributions Bayes: ...
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/haiku_tloredo.pdf -- 78.4 Кб -- 01.04.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/haiku_tloredo.pdf -- 78.4 Кб -- 01.04.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/haiku_tloredo.pdf -- 78.4 Кб -- 01.04.2008
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6137. http://hea-www.harvard.edu/AstroStat/HEAD2008/haiku_taldcroft.pdf
Robust source detection limits for Chandra observations Tom Aldcroft, Paul Green, Jean Connelly, Vinay Kashyap, Dong-Woo Kim Smithsonian Astrophysical Observatory and CXC, Cambridge MA, 02138 Need upper limits! Simulate Monte-Carlo? Oh no, too slow, so... See Poster 04.02
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/haiku_taldcroft.pdf -- 489.1 Кб -- 01.04.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/haiku_taldcroft.pdf -- 489.1 Кб -- 01.04.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/haiku_taldcroft.pdf -- 489.1 Кб -- 01.04.2008
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6138. http://hea-www.harvard.edu/AstroStat/HEAD2008/haiku_aconnors.pdf
Quantifiying Doubt and Confidence in Image "Deconvolution" A. Connors, D. van Dyk, J.Chiang, A. Roy, R. Izem, CHASC; (D. Esch, M.Karovska) * Wake Up Your Vision: We cracked tough Poisson Fit problems: * See With New Eyes: Source/Feature Detection (Flexible models: Multiplicative+Multi-Scale-like) * See With New Eyes: Quantify Goodness-of-Fit: (Simulate Null, Data; Summary Statistics; Compare) * See With New Eyes: Confidence Limits on Shape (Think 4D+)
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/haiku_aconnors.pdf -- 885.6 Кб -- 01.04.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/haiku_aconnors.pdf -- 885.6 Кб -- 01.04.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/haiku_aconnors.pdf -- 885.6 Кб -- 01.04.2008
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6139. http://hea-www.harvard.edu/AstroStat/HEAD2008/announcement.pdf
M a r 3 1 , 2 0 0 8 , H E A D , L o s A n g e le s , C A AstroStatistics Special Session Methods & Techniques http://hea-www.harvard.edu/AstroStat/HEAD2008/ Agenda Eric Feigelson [Astrostatistics & High-Energy Astrophysics] Poster Haiku Aldcroft, Boone, Connors, Davis, Kaastra, Kashyap, Loredo, Lee, Takamitsu, Zoglauer David van Dyk [Likelihood Ratio Tests] Andy Ptak [MCMC] A n e t a S ie m ig in o w s k a & V in a y K a s h y a p
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Ссылки http://hea-www.harvard.edu/AstroStat/HEAD2008/announcement.pdf -- 48.4 Кб -- 28.03.2008
[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/announcement.pdf -- 48.4 Кб -- 28.03.2008
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[ Текст ] Ссылки http://hea-www.harvard.edu/astrostat/HEAD2008/announcement.pdf -- 48.4 Кб -- 28.03.2008
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6140. http://hea-www.harvard.edu/~bradw/cv/papers/Ross154.pdf
The Astrophysical Journal, 676:610 Y 627, 2008 March 20 # 2008. The American Astronomical Society. All rights reserved. Printed in U.S.A. X-RAY FLARING ON THE dMe STAR, ROSS 154 B. J. Wargelin, V. L. Kashyap, J. J. Drake, D. GarcДД lvarez,1 and P. W. Ratzlaf f Ii a-A Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 Received 2006 April 12; accepted 2007 December 12 ABSTRACT We present results from two Chandra imaging observations of Ross 154, a nearby flaring M dwarf star. During a 61 ks
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Ссылки http://hea-www.harvard.edu/~bradw/cv/papers/Ross154.pdf -- 1659.4 Кб -- 17.03.2008
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