Change History
A complete history of new items and changes made on the LAMBDA site.
The list of recent items is available through this RSS feed:
http://lambda.gsfc.nasa.gov/outreach/whatsnew.xml
| Type | Description | Date |
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High Resolution Microwave Simulations of the Full Sky A collection of simulated full sky maps at several microwave frequencies showing different contributing emitters has been delivered to the LAMBDA site. Maps showing individual contributing sources have been supplied as well as maps combining different sources. A corresponding set of catalogs identifying sources has been supplied. |
01-Oct-09 |
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WMAP IDL Software Update A new release of the WMAP IDL Software has been released. |
01-Oct-09 |
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WMAP Uncalibrated Time-Ordered Data FITS Header Correction It was discovered that the FITS headers reported the data in the uncalibrated TOD files to be in millikelvin. These files have been corrected to report that data to be in counts. More... |
16-Sep-09 |
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WMAP Beam Map Pixelization Characterization The 2.4 arcminute binning used in the beam maps filters some of the high frequency content. A transfer function is derived from an estimate of the symmetrized radial profile of the pixelization function. Both the transfer function and the radial profile have been provided. More... |
20-Jul-09 |
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Sloan Digital Sky Survey LRG Likelihood Software A software package that computes parameter likelihoods for the Luminous Red Galaxies data form the Sloan Digital Sky Survey has been released! |
13-Jul-09 |
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WMAP Sky Map Data in Image Format Previously released sky maps in HEALPix format are now also available in more traditional projection formats: Mollweide and Zenith Equal Area. These files may be manipulated and displayed with standard astronomical display software such as DS9 and SAOImage. |
15-Jun-09 |
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ACBAR 2008 Data High-resolution CMB power spectrum and ancillary data from the complete ACBAR data set. |
03-Jun-09 |
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WMAP Noise Level Table Correction for Foreground-Reduced Sky Maps The table of noise levels, σ0, for the full-resolution, foreground-reduced maps were updated on 2 June 2009 to correct an error. The previously posted values were inadvertantly copied from the 3-year release. |
02-Jun-09 |
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Skyviewer executable for Microsoft Windows The LAMBDA team has built skyviewer under Microsoft Windows and has released the executable image. |
12-Mar-09 |
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WMAP Likelihood Software Optimization The performance of the WMAP Likelihood software was significantly improved by reordering nested DO loops. More... |
05-Mar-09 |
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Skyviewer Tool Major Release A new version of Skyviewer has been released. This version supports Qt4, and the user interface has been completely redesigned. |
06-Feb-09 |
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WMAP Cosmological Parameters Table Update The WMAP Cosmological Parameters Table has been updated with best-fit Cl spectra. |
03-Feb-09 |
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MCMC Foreground Maps -- Shifted Spinning Dust Model WMAP galactic foreground model maps were delivered; these maps were generated using a pixel-based MCMC algorithm implemented with a shifted spinning dust fitting model. More... |
19-Nov-08 |
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MCMC Foreground Maps -- Steepening Synchrotron Model WMAP galactic foreground model maps were delivered; these maps were generated using a pixel-based MCMC algorithm implemented with a steepening synchrotron fitting model. More... |
19-Nov-08 |
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Astronomical Coordinates of HEALPix pixels We supply galactic coordinate projection map files containing the astronomical coordinates of the pixel centers at several HEALPix resolutions and both HEALPix ordering schemes. |
06-Nov-08 |
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CAMB Online Tool Update The CAMB Online interface was updated to support the September 2008 version of CAMB and its new parameters. More... |
30-Oct-08 |
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WMAP Likelihood Software Patch A user-supplied patch has been released that allows the data directory to be supplied through an operating system environment variable instead of being hard-coded into the software. More... |
20-Oct-08 |
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WMAP Loss Imbalance Templates Polarization templates (Q,U) that trace the effect of a small transmission imbalance between the A & B sides of the WMAP instrument. One per differencing assembly. More... |
09-Oct-08 |
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Corrected Singular Value Decompositions of WMAP Inverse Covariance Matrices New versions (v3p1) of the N-1 SVD files have been delivered to LAMBDA. The decompositions were done on N-1 matrices in Nobs units. Scaling to mK-2 units has been applied to the eigenvalues. These files supersede the originally delivered versions (v3) in which the scaling to mK-2 was erroneously applied to the eigenvectors. More... |
02-Oct-08 |
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WMAP Temperature Point Source Exclusion Mask A point source only exclusion mask for temperature maps has been delivered by the WMAP team. More... |
09-Sep-08 |
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WMAP Effective Frequency Calculator WMAP has supplied a web tool that calculates the effective frequency of each of its frequency bands given one or more spectral indices. |
01-Aug-08 |
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WMAP Worldwide Telescope Map Images Microsoft has formatted a set of maps for their Worldwide Telescope 3D visualization application. |
30-Jul-08 |
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WMAP "Science On a Sphere" Map Images Sky map images formatted to be compatible with the NOAA "Science On A Sphere" 3D visualization system have been provided |
06-Jun-08 |
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WMAP Google Earth Map Images Sky map images formatted to be compatible with the Google Earth 3D visualization application have been provided |
06-Jun-08 |
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WMAP Bandpass Frequency Response Tables Delivered The WMAP team has delivered frequency response tables for each detector in WMAP's twenty radiometers. More... |
30-May-08 |
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LAMBDA and HEASARC Merge The High Energy Astrophysics Science Archive Research Center (HEASARC) and the Legacy Archive for Microwave Background Data Analysis (LAMBDA) have merged into a single organization that will use the name HEASARC. The merged archive will continue to provide all of the services currently being offered by the two archives, while better serving users interested in studies requiring both high energy and microwave data. Users will notice few immediate changes, but we will gradually fully integrate all the services of the archives. |
20-May-08 |
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Updated WMAP Cosmological Parameters Table The most recent Cosmological Parameters table has been updated with Markov chains for most of the model/dataset combinations reported. |
25-Apr-08 |
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WMAP Chain Analysis Software A WMAP modification of the CosmoMC getdist program has been released. |
25-Apr-08 |
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MCMC Foreground Maps Galactic foreground model maps generated using a pixel-based MCMC algorithm, as described in Gold et al. More... |
10-Apr-08 |
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WMAP Cosmological Parameter Plotter This tool plots or tabulates cosmological parameter likelihoods for the different model & data set combinations found in the WMAP Cosmological Parameter Table. The user may select one or more model & data set combinations to plot simultaneously. Each selected parameter will be plotted in a separate panel. |
19-Mar-08 |
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The WMAP Five-Year Data Release The five-year WMAP data, including power spectra and the likelihood routine, temperature and polarization sky maps, raw and calibrated time-ordered data, and ancillary instrument data. |
05-Mar-08 |
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Leiden/Argentine/Bohn (LAB) HI survey The LAB survey contains the final data release of observations of 21-cm emission from Galactic neutral hydrogen over the entire sky. More... |
15-Nov-07 |
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Updated WMAP Inverse Covariance Matrices A small effect due to transmission imbalance between the A side and the B side of the instrument has been projected out of the inverse variance matrices as described in Section 3.5.1 of Jarosik et. al. (2007). This marginalization was inadvertently omitted from the initial v2 release of these files, but it is small enough that it is unlikely to change any results obtained with the original matrices. More... |
13-Jun-07 |
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WMAP 3-Year Paper Figures The figures from the 3-year WMAP papers are now available in PNG format for use in talks. More... |
22-Mar-07 |
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Contributed Software Archive An astro-ph-style archive that members of the community may use to share software packages. More... |
14-Mar-07 |
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FIRAS Data in HEALPix Format The FIRAS data that formed the final COBE Project data release have been partially reprocessed to produce sky products in HEALPix format. More... |
25-Jan-07 |
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WMAP Best Fit Matter Power Spectra Matter power spectra have been supplied for the model/dataset combinations displayed in the WMAP Cosmological Parameter Table. More... |
25-Jan-07 |
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WMAP TB & EB Power Spectra Best estimates for the TB and EB power spectra of the CMB, unbinned for analysis. More... |
12-Jan-07 |
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skyviewer 0.2.4 Released A problem with the Mollweide projection in skyviewer was fixed. |
10-Jan-07 |
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Revised Three-Year WMAP Papers The three-year papers have been updated to reflect the versions in press at ApJ. More... |
08-Jan-07 |
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Updated Cosmological Parameter Table There are three revised entries and one new entry in the cosmlogical parameter table, in association with the revised three-year papers. On 12 January 2007, three of these chains were updated with additive constants as described in the Release Notes. More... |
08-Jan-07 |
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COBE DIRBE Zodiacal Light Prediction Software IDL software for calculating the zodiacal light predicted from the DIRBE team interplanetary dust model. More... |
28-Dec-06 |
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WMAP Likelihood Software An update to the WMAP Likelihood code that incorporates a faster low-l TT likelihood module, suggested by Jon Sievers of CITA. Also includes fixes for some memory allocation and compiler-related problems. Release Notes. More... |
24-Nov-06 |
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Low-l Likelihood Software Code and data from Eriksen et al. used to estimate the low-l TT likelihood using a Blackwell-Rao estimator in conjunction with pre-computed Gibbs samples. More... |
02-Nov-06 |
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WMAP Likelihood Software An update to the WMAP Likelihood code that incorporates new capability to evaluate the low l TT likelihood, a revision to the point source amplitude and uncertainty, and numerous software enhancement. Release Notes. More... |
17-Oct-06 |
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DMR Calibrated Individual Observations (CIO) The DMR CIO files contain the DMR 4-year time-ordered data in FITS format. More... |
03-Oct-06 |
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SYNFAST tied into the CAMB and CMBFAST Online tools The HEALPix synfast application is now used in the CMBFAST and CAMB online tools to produce sky maps based upon spectra computed by these applications. |
24-Aug-06 |
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The WMAP IDL Software Library Update IDL procedures to read the temperature/polarization WMAP skymaps and to read the second release time-ordered data were added and/or modified. A procedure to compute pointing positions in astronomical coordinates for the observations in a time-ordered data record was written. |
16-Aug-06 |
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Additional CMB Polarization Masks More aggressive polarizations masks, labeled P04 and P02, are provided for researchers who wish to investigate the effects of more extensive foreground cuts. More... |
27-Jul-06 |
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Augmented Cosmological Parameter Table The cosmological parameter table has been augmented with 3 additional models: non-flat CDM ("ocdm"), non-flat CDM with quintessence ("ocdm+wpert"), and flat CDM with a running spectral index and tensors ("lcdm+run+tens"). |
12-Jul-06 |
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Updated Cosmological Parameter Table The Cosmological Parameter Table has been reorganized and updated with several new Markov chains, best-fit model power spectrum files and printable parameter tables. The new entries all carry the version string 'v2p1' (some of which were posted prior to this announcement). Results for non-flat models and CDM models with running plus tensors are forthcoming. |
14-Jun-06 |
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EE & BB Power Spectra WMAP EE and BB binned power spectrum data, which are plotted in Figure 25 of "Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis," Page et al. (2006). |
05-May-06 |
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WMAP ILC Region Definition Map Defines the sky coordinate boundaries of the 12 regions used in the generation of the WMAP Internal Linear Combination (ILC) Map. More... |
17-Apr-06 |
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Predicted SZ Power Spectrum The angular power spectrum due to the Sunyaev-Zeldovich effect, as predicted by Komatsu & Seljak (2002). |
21-Mar-06 |
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The WMAP Three-Year Data Release The three-year WMAP data, including power spectra and the likelihood routine, temperature and polarization sky maps, raw and calibrated time-ordered data, and ancillary instrument data. |
16-Mar-06 |
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Skyviewer Update Skyviewer was updated to compile against libQGLViewer 2.1.1 |
19-Dec-05 |
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CAMB Online Interface We have developed a web-based interface to the CAMB tool. |
02-Dec-05 |
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QMAP Calibrated Sky Maps Sky maps from both flights of the QMAP balloon experiment, including maps at 33 GHz (Ka band) and 41 GHz (Q band). |
18-Nov-05 |
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QMASK Calibrated Sky Map and Power Spectrum Sky map and angular power spectrum obtained by combining data from the QMAP and Saskatoon experiments. More... |
18-Nov-05 |
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LILC Reduced-Foreground Map Reduced galaxy map produced by Eriksen et al. using a variant of the ILC algorithm that employs a Lagrange multiplier, hence LILC. More... |
03-Nov-05 |
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Simulated ILC maps An ensemble of simulated ILC map, transformed to harmonic space, produced by Eriksen et al. for use with error analyses of the real ILC map. More... |
21-Oct-05 |
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ARCHEOPS Experiment Results Improved results from the ARCHEOPS Experiment have been added to the LAMBDA archive. |
17-Oct-05 |
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WMAPViewer tool added to the CMB toolbox This is a web-based tool that allows the user to view a CMB sky map using a technology similar to that used on maps.google.com |
30-Sep-05 |
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IRAS/ISSA plates IRAS diffuse emission data projected info HEALPix format. More... |
20-Sep-05 |
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COBE-FIRAS CMB Monopole Spectrum Spectrum of the CMB monopole with uncertainties. More... |
01-Sep-05 |
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SWAS Data Release 10 Includes all data taken in the five and a half years of the nominal science mission. More... |
22-Jul-05 |
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WMAP 1st-year Reduced-Foreground Maps WMAP 1st-year Reduced-Foreground Maps produced by Tegmark et al. More... |
11-Mar-05 |
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Skyviewer Skyviewer is an OpenGL based program to display HEALPix-based skymaps, saved in FITS format files. |
25-Feb-05 |
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COBE/DMR 4 -year Sky Map in HEALPix DMR 4-year sky maps reprocessed from the time-ordered data into HEALPix tessellated sky maps. More... |
11-Feb-05 |
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CMBFast Online Update Corrected a problem with timeouts between the browser, server, and intervening firewall. |
07-Jan-05 |
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WMAP Beam Radial Profiles New product; symmetrized radial beam profiles for each WMAP differencing assembly, as derived from first year data. More... |
18-Nov-04 |
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SWAS Data Release 9 Includes all data taken in the first four and a half years of the mission. More... |
03-Aug-04 |
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MAPVIEW "IDL Virtual Machine" Widget Healpix FITS file display viewer, useable without an IDL license. |
02-Aug-04 |
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WMAP IDL Library Include quaternion interpolation software, enhanced capabilities for MAPVIEW. |
02-Aug-04 |
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VSA Experiment Results The 2nd data release by the VSA experiment in February 2004 has been added to the LAMBDA archive. The new results incorporate the previous data releases. |
21-Jul-04 |
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CMBFAST 4.5.1 Installed CMBFAST 4.5.1 as the backend to the online interface. Updated the online interface to support the changes in input parameters. Added tensor modes plots to the results page. |
08-Apr-04 |
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SWAS Data Release 8 Includes all data taken in the first four years of the mission. More... |
18-Feb-04 |
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'Foreground Cleaned' I Maps The documentation was augmented to add a warning that the template sky maps used in the cleaning contain ringing artifacts around bright sources like the LMC. More... |
09-Jan-04 |
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VSA Experiment Results Data released by the VSA experiment in December 2002 have been added to the LAMBDA archive. |
21-Nov-03 |
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WMAP Simulated Noise Maps 110 sky maps containing simulated instrument noise for each WMAP differencing assembly. More... |
21-Nov-03 |
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WMAP Binned TT Power Spectrum Inserted two new columns documenting the lower and upper values of multipole moment 1 used to form each bin. More... |
31-Oct-03 |
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CBI Experiment Deep Field and Mosaic Results Data obtained by the CBI Experiment in 2000 have been added to the LAMBDA archive. |
17-Oct-03 |
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ARCHEOPS Experiment KS3 Results Data obtained by the ARCHEOPS Experiment have been added to the LAMBDA archive. |
11-Sep-03 |
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SWAS Data Release 7 Includes all data taken in the first three and a half years of the mission. More... |
05-Sep-03 |
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WMAP Temperature Correlation Function Two-point temperature correlation function computed from the WMAP ILC map. More... |
19-Aug-03 |
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ACBAR Band Powers and Window Functions Data obtained by the ACBAR experiment at the South Pole in 2001-2 have been added to the LAMBDA archive. |
01-Aug-03 |
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WMAP Composite Mask Several intensity masks bundled into one file. The point source mask is specifically broken out from the diffuse emission masks. More... |
31-Jul-03 |
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WMAP IDL Library Includes minor fixes to version 1.1, improved Windows compatibility, additional reprojection capability. More... |
30-Jul-03 |
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WMAP Point Source Catalog The initial release has been revised to include spectral index information and updated fluxes for four sources. More... |
29-Jul-03 |
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MAXIMA-1 Calibrated Sky Map and Derived CMB Products Data obtained by the MAXIMA-1 balloon experiment in 1998 have been added to the LAMBDA archive. |
22-Jul-03 |
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WMAP Theoretical LCDM Power Spectra, FITS format The theoretical LCDM power spectra already provided in ASCII format are now available in FITS format compatible with SYNFAST. More... |
18-Jul-03 |
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Composite HI column density map All-sky map derived from the Leiden/Dwingeloo survey combined with data from Dickey & Lockman. More... |
16-Jul-03 |
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Composite W(CO) map The composite map of Dame, Hartmann & Thaddeus (2001). More... |
16-Jul-03 |
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WMAP ILC Region Definition Map Defines the sky coordinate boundaries of the 12 regions used in the generation of the WMAP Internal Linear Combination (ILC) Map. More... |
08-Jul-03 |
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WMAP 'Foreground Cleaned' I Maps Q, V and W band I Maps used in the generation of the WMAP first-year CMB power spectrum. More... |
26-Jun-03 |
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COBE FIRAS Spectrum Browser This tool permits browsing of the FIRAS data for preliminary investigations of localized sources. |
06-Jun-03 |
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Rewritten Outreach section The publications lists in the Outreach section were rewritten to be more useful. The default list shows all publications submitted to astro-ph within a year; a second list is provided to show all tracked publications. |
22-May-03 |
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COBE DIRBE Small Source Spectral Energy Distribution Browser This tool permits browsing of the DIRBE data for preliminary investigations of potential point sources. |
20-May-03 |
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LAMBDA Site Update The site has been re-implemented using ColdFusion to enable dynamic page building. Page extensions have changed from .html to .cfm, which may require users to update some of their links. |
15-May-03 |
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WMAP Theoretical LCDM Power Spectrum Selected theoretical power spectra fit to WMAP data in combination with other datasets. More... |
16-Apr-03 |
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SWAS Data Release 6 Includes all data taken in the first three years of the mission. More... |
09-Apr-03 |
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WMAP IDL Library Includes minor fixes to version 1.0, plus new routines to compute sky coordinates from quaternions. More... |
19-Mar-03 |
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WMAP Binned TE Power Spectrum New product; a binned version of the combined TE power spectrum, useful for plotting. More... |
17-Mar-03 |
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WMAP Cosmological Parameters Table Summary table of the best-fit cosmological parameters from the WMAP team. More... |
11-Mar-03 |
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WMAP Binned TT Power Spectrum New product; a binned version of the combined TT power spectrum, useful for plotting. More... |
21-Feb-03 |
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WMAP Combined TT Power Spectrum Cosmic variance portion of error in column 3 modified to reflect best-fit running index model. Added columns 4 and 5 to document contributions to total error from measurement errors and cosmic variance. More... |
21-Feb-03 |
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WMAP Likelihood Code Fixed a bug in code that reads in the off-diagonal elements of the TE covariance matrix. Users report that this bug had a minimal effect on likelihood analyses and does not warrant re-running of previous results. More... |
21-Feb-03 |
