Next: *period* - Period search Up: *fft* - Period search Previous: A summed or incoherent . The distribution of coefficient values for a single FFT is exponential if the original data contain no periodic signal. ... Significant coefficients will appear beyond the high-value end of the normal distributions. ... xt> fft.histogram_bi=0.5 # if necessary, adjust number for an aesthetic plot xt> ftpplot input table file: rp90_ftp The plot will appear on the screen. ...

XMM-Newton CCF Release Note XMM-CCF-REL-183 EPIC-pn spectral response R. D. Saxton 11 November 2004 1 CCF components Name of CCF VALDATE Blocks changed XSCS ag EPN QUANTUMEF 0015.CCF 2000-01-01 FRACTION CHANNEL, FRACTION ENERGY QE TOTAL, EBINS FRACTION NO EPN REDIST 0009.CCF 2000-01-01 NOISE PARAMS, PARTEVENT PARAMS THRESH LOSS NO 2 Changes Recent calibration work has shown that the Epic-pn redistribution function is in practice narrower than that represented in the current matrices. ...

... Minute Values of Geomagnetic Field Components . ... AA 1868 - Present (3 hourly and daily) (monthly) (yearly) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) KP_AP 1932 - Present (3 hourly and daily) (Lists and histograms of geomagnetic disturbance and Solar Sunspots) AE_HV 1957-75, 78-88 (hourly) AE_MIN 1978-881-6;198903;1990-94 (minute) DST 1957 - Present (hourly) PC 1975 - Present (15-minute) AMANAS 1959 - Present (3 hourly and daily) KMKNKS 1983 - Present (3 hourly) . ...

... GPI Data Pipeline 1.0 documentation . ... Installing Compiled Executables for use with the IDL Runtime . ... If you do not have an IDL license, the GPI Data Reduction Pipeline is distributed as compiled code along with the IDL runtime. ... gpi_pipeline_1.0_runtime_macosx.zip - GPI pipeline compiled code plus IDL runtime for Mac OS X . gpi_pipeline_1.0_runtime_linux.zip - GPI pipeline compiled code plus IDL runtime for Linux . ... unix% idl -rt=/path/to/executables/gpi_launch_pipeline.sav . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

Next: Structure of the Galaxy Up: Model of the Galaxy Previous: Model of the Galaxy . As discussed above (Section  6 ), galactic binary systems are assumed to be distributed logarithmically along their semi-major axis A (Abt and Levy, 1976[ 2 ]), . ... Figure 40: Number of binary stars per frequency decade. ... As the observed distribution of binary periods is flat (equation ( 15.3.1 )), the normalization constant is the total number of galactic binaries per frequency decade: . ...

... Namespaces . Classes . Files . ... File List . ... components . ComponentModels . ... include < casa/aips.h > . include < casa/BasicSL/Complex.h > . include < components/ComponentModels/ComponentType.h > . include < components/ComponentModels/TwoSidedShape.h > . Go to the source code of this file. class . ... All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines . Generated on Fri Sep 3 2010 13:07:39 for casacore by 1.7.1 ...

... Our resulting sample of ELGs presented in Tables 2 and 3 is not artificially biased to any specific type of galaxies. ... Since we are looking for selection of a sample of Case BCGs, it is interesting to examine how the detected BCGs are connected with Case emission-line codes. ... Altogether BCGs comprise about 60 % of all Case ELGs which display emission lines in our spectra, or about 44 % of all Case galaxies with some emission-line code. ... Among those with the code ``w'' about 40 % are BCGs. ...

Last time we saw that flat rotation curves for galaxies, when measured in galaxies with extended gas distributions, provides unambiguous data that shows the mass distribution is dominated by an unseen, spherical halo. ... Perhaps only galaxies with extended dark matter halos are capable of retaining large gaseous extents? . ... Clusters of Galaxies: . ... The case of the Cancer cluster: . ... Below is the velocity distribution of galaxies in the Cancer cluster: . ... What's going on in Cancer? ...