AndreaBozzo/ceres-open-data-index huggingface dataset:
Sloan Digital Sky Survey/XMM-Newton Type1 AGN X-Ray and Radio Properties Catalog

X-ray emission from active galactic nuclei (AGN) is dominated by the accretion disk around a supermassive black hole. The radio luminosity, however, has not such a clear origin except in the most powerful sources where jets are evident. The origin (and even the very existence) of the local bi-modal distribution in radio-loudness is also a debated issue. By analyzing X-ray, optical and radio properties of a large sample of type 1 AGN and quasars (QSOs) up to z &gt; 2, where the bulk of this population resides, the authors aim to explore the interplay between radio and X-ray emission in AGN, in order to further our knowledge on the origin of radio emission, and its relation to accretion. They analyze a large (~800 sources) sample of type 1 AGN and QSOs selected from the 2XMMi XMM-Newton X-ray source catalog, cross-correlated with the SDSS DR7 spectroscopic catalog, covering a redshift range from z ~ 0.3 to z ~ 2.3. Supermassive black hole masses are estimated from the Mg II emission line, bolometric luminosities from the X-ray data, and radio emission or upper limits from the FIRST catalog. Most of the sources accrete close to the Eddington limit and the distribution in radio-loudness does not appear to have a bi-modal behavior. This study confirms that radio-loud AGN are also X-ray loud, with an X-ray-to-optical ratio up to twice that of radio-quiet objects, even excluding the most extreme strongly jetted sources. By analyzing complementary radio-selected control samples, the authors find evidence that these conclusions are not an effect of the X-ray selection, but are likely a property of the dominant QSO population. The authors of this catalog conclude that their findings are best interpreted in a context where radio emission in AGN, with the exception of a minority of beamed sources, arises from very close to the accretion disk and is therefore heavily linked to X-ray emission. They also speculate that the radio-loud/radio-quiet dichotomy might either be an evolutionary effect that developed well after the QSO peak epoch, or an effect of incompleteness in small samples. Basic information and derived properties are presented for the sample of X-ray selected type 1 AGN (as well as for the 11 X-ray undetected type 1 AGN in the &quot;control sample&quot;): coordinates, redshift, X-ray and radio fluxes, optical magnitudes, from the SDSS, 2XMMi, and FIRST catalogs; continuum luminosities at 3000 Angstroms and in the X-ray band, black hole masses, bolometric luminosities, Eddington ratios; for the sources falling in the FIRST field, optical fluxes at 2500 and 4400 Angstroms, X-ray-to-optical index, radio classification, and the ratios between the radio and the UV, optical, and X-ray fluxes. This table was created by the HEASARC in October 2012 based on &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/545/A66"&gt;CDS Catalog J/A+A/545/A66&lt;/a&gt; files table3.dat, table4.dat and table5.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 7 4010 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2019-01-01 to 2020-12-31. It is a Occultation measurement and covers the time 2019-05-21T08:28:58.100 to 2019-05-21T08:51:06.349.

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Organization: National Aeronautics and Space Administration
Chandra Extended Deep Field South Survey Point Source Catalog

This table contains the combined point-source catalogs for the Extended Chandra Deep Field- South (E-CDF-S) survey. The E-CDF-S consists of four contiguous 250 ks Chandra observations covering an approximately square region of total solid angle ~0.3 square degrees, which flank the existing ~1 Ms Chandra Deep Field-South (CDF-S). The survey reaches sensitivity limits of ~1.1 x 10&lt;sup&gt;-16&lt;/sup&gt; and ~6.7 x 10&lt;sup&gt;-16&lt;/sup&gt; ergs cm&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt; for the 0.5-2.0 and 2-8 keV bands, respectively. 762 distinct X-ray point sources are detected within the E-CDF-S exposure; 589 of these sources are new (i.e., not previously detected in the ~1 Ms CDF-S). This brings the total number of X-ray point sources detected in the E-CDF-S region to 915 (via the E-CDF-S and ~1 Ms CDF-S observations). Source positions are determined using matched-filter and centroiding techniques; the median positional uncertainty is ~0.35&quot;. The basic X-ray and optical properties of these sources indicate a variety of source types, although absorbed active galactic nuclei (AGNs) seem to dominate. In addition to the main Chandra catalog, this table contains the supplementary source catalog with 33 lower-significance X-ray point sources that have bright optical counterparts (R &lt; 23 mag). These sources generally have X-ray-to-optical flux ratios expected for normal and starburst galaxies, which lack a strong AGN component. The basic number-count results for the main Chandra catalog are in good agreement with the ~1 Ms CDF-S for sources with 0.5-2.0 and 2-8 keV fluxes greater than 3 x 10&lt;sup&gt;-16&lt;/sup&gt; and 1 x 10&lt;sup&gt;-15&lt;/sup&gt; ergs cm&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt;, respectively. This HEASARC table contains 809 entries: 762 entries corresponding to the 762 sources listed in the main catalog (Table 2 of the published paper), 14 sources from the cross-field source list (Table 3) which give properties for sources which were detected in more than one observational sources, e.g. there are two entries for the source with source_number = 367, one entry coming from the main catalog, the other entry from the cross-field catalog, and 33 entries corresponding to the 33 sources in the supplementary, optically bright source catalog (Table 6). The HEASARC has created a new parameter called source_type to identify from which of these 3 original tables any given entry comes from; it is set to &#39;main&#39;, &#39;crossfield&#39; and &#39;supplement&#39; for entries from Tables 2, 3, and 6, respectively. This online catalog was created by the HEASARC in January 2006 based on machine-readable versions of tables 2, 3, and 6 from the paper which were obtained from the ApJ website. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RSI 1/2/3 COMET ESCORT 2 0730 V1.0

This is a Rosetta Radio Science data set, collected during the COMET ESCORT 2 phase 2015-03-11 to 2015-06-30. It is a Global Gravity measurement at the comet 67P and covers the time 2015-04-25T02:02:15.000 to 2015-04-25T05:24:07.000.

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Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 5 3814 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2015-01-01 to 2016-12-31. It is a Occultation measurement and covers the time 2015-09-08T09:15:54.000 to 2015-09-08T09:39:44.949.

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Organization: National Aeronautics and Space Administration
MSL MARS ALPHA PARTICLE X-RAY SPECTROMETER 4/5 RDR V1.0

The MSL APXS RDR data set contains calibrated spectra and oxide weight percent data derived from observations of the APXS instrument aboard the Mars Science Laboratory rover. Two types of products are included: summed X-ray spectra in counts as a function of energy, and abundance data for a set of standard elements and oxides, derived from the summed spectra. Both product types are given as ASCII text files in comma-separated-value (CSV) format, suitable for reading with spreadsheet software.

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Organization: National Aeronautics and Space Administration
Small Magellanic Cloud ATCA and Parkes 1400-MHz Source Catalog

This table contains a new catalog of radio-continuum sources in the field of the Small Magellanic Cloud (SMC). This catalog contains 1560 radio-continuum sources detected at 1400 MHz (lambda = 20 cm) from a set of new high-resolution radio-continuum mosaic images of the SMC created by combining observations from ATCA and Parkes (Wong et al. 2011, SerAJ, 182, 43). The 20 cm mosaic image (Fig. 2 in above reference)was created by combining data from ATCA project C1288 (Mao et al. 2008, ApJ, 688, 1029) with data obtained for a Parkes radio-continuum study of the SMC (Filipovic et al. 1997, A&amp;AS, 121, 321). This image had a beam size of 17.8 x 12.2 arcseconds and an rms noise of 0.7 mJy/beam. The MIRIAD task &#39;imsad&#39; was used to detect sources in the 20-cm image, requiring a fitted Gaussian flux density &gt; 5 sigma (3.5 mJy). All sources were then visually examined to confirm that they were genuine point sources, excluding extended emission, bright side lobes, etc. This table was created by the HEASARC in September 2014 based on CDS Catalog J_other/Ser/183.103/ file tablea2.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
IRTF S NSFCAM RAW AND CALIBRATED RING PLANE CROSSING V1.0

This dataset contains IRTF images of the Saturn system obtained  with the NSFCam in early August 1995. The observations were made  four days prior to the ring plane crossing when the sun and  Earth were on opposite sides of the ring plane. The observations include sequences of rapid exposures of several satellite  mutual events and spectroscopic data of the main rings and  the E and G rings.

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Organization: National Aeronautics and Space Administration
CMS: LiDAR Data for Forested Sites on Borneo Island, Kalimantan, Indonesia, 2014

This dataset provides airborne LiDAR data collected over 90 sites totaling approximately 100,000 hectares of forested land in Kalimantan, Indonesia on the island of Borneo in late 2014. The data were collected as part of an effort to establish a national forest monitoring system for Indonesia that uses a combination of remote sensing and ground-based forest carbon inventory approaches.

Tags: earth-science-lidar-spectral-engineering, earth-science-topography-land-surface-terrain-elevation-digital-elevation-terrain-model-dem
Organization: National Aeronautics and Space Administration
7C Catalog 151-MHz Survey Final Unified Source Catalog

This table contains a final unified catalog for the 7C survey at 151 MHz with a spatial resolution of 70 x 70cosec(Dec) arcsec&lt;sup&gt;2&lt;/sup&gt;. This has been constructed by amalgamating the existing catalogs derived from individual fields imaged at this resolution and eliminating redundancy in regions of mutual overlap. This was a non-trivial procedure because the flux in multiple-component sources may be fitted differently on alternative images, owing, for example, to differences in local noise and beam distortion. The final catalog as published thus produced contains 43683 sources. (Note that the HEASARC removed one duplicate source entry for &#39;7C 083231.6+262635&#39; since it had two entries, which were identical except that in one the beam-fitted flux density S&lt;sub&gt;bf&lt;/sub&gt; was 834 mJy/beam, while, in the other entry now removed, S&lt;sub&gt;bf&lt;/sub&gt; was 840 mJy/beam). Separate final catalogs have been previously published for the 7C Galactic Plane 7CG survey (available as the HEASARC table GP7C151MHZ), and the lower-resolution survey of the low-declination strip 9&lt;sup&gt;h&lt;/sup&gt; &lt; RA &lt; 16&lt;sup&gt;h&lt;/sup&gt;, 20&lt;sup&gt;o&lt;/sup&gt; &lt; Dec &lt; 35&lt;sup&gt;o&lt;/sup&gt; (available as the HEASARC table LD7C151MHZ). The individual catalogs for about 40 of the 96 regions contributing to the total have already been published, together with full details of the methodology, in MNRAS or A&amp;AS: &lt;pre&gt; Reference Region Lacy et al. 1995, MNRAS, 276, 614 92 Visser et al. 1995, A&amp;AS, 110, 419 93 Pooley et al. 1998, MNRAS, 298, 637 94-96 Riley et al. 1999, MNRAS, 306, 31 1-33 &lt;/pre&gt; and these data are also available via the MRAO website: &lt;a href="http://www.mrao.cam.ac.uk/surveys/7C/"&gt;http://www.mrao.cam.ac.uk/surveys/7C/&lt;/a&gt; Individual catalogs for the remaining 58 regions by Riley et al. (regions 34-91) were released electronically via the MRAO website in November 2001. These include a re-analysis of data originally published in rather a different parametrization by McGilchrist et al. 1990, MNRAS, 246, 110. The regions re-analyzed are those numbered 41, 44, 59, 60, 62 and 63 and they supersede McGilchrist&#39;s 1990 publication. The RA x Dec coverage, the average rms noise, the flux density of the faintest source listed and the completeness limit for each of the individual regions contributing to the final catalog are given in the table &lt;a href="http://cdsarc.u-strasbg.fr/ftp/cats/J_MNRAS/382/1639/regions.dat"&gt;http://cdsarc.u-strasbg.fr/ftp/cats/J_MNRAS/382/1639/regions.dat&lt;/a&gt;. For further details of the surveys and data analysis procedures please refer to the published papers referenced above and other references contained therein. This table was created by the HEASARC in October 2010 based on CDS table J/MNRAS/382/1639 files 7c.dat and regions.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
CMS: Atmospheric Methane Concentrations and Prior Emissions, Boston, MA, 2012-2014

This data set provides average hourly measured, modeled enhancements, and background methane (CH4) concentrations, atmospheric ethane (C2H6) measurements, prior CH4 flux fields by sector, and a spatial reconstruction of natural gas (NG) consumption in Boston, Massachusetts and the surrounding region. Atmospheric CH4 concentrations were measured continuously from September 2012 through August 2013 at four locations and atmospheric ethane was measured continuously for several months during 2012-2014 at one location. Spatial models of prior CH4 emissions and natural gas consumption are given for an ~18,000 km^2 area centered on Boston, MA.

Tags: earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-methane, earth-science-environmental-impacts-human-dimensions-industrial-emissions
Organization: National Aeronautics and Space Administration
Chandra Typical Galactic Plane Region Point Source Catalog

Using the Chandra Advanced CCD Imaging Spectrometer Imaging array (ACIS-I), the authors carried out a deep hard X-ray observation of the Galactic plane region at a location (l, b) ~ (28.5 degrees, 0.0 degrees), where no discrete X-ray source had been reported previously. They detected 274 new point X-ray sources (4-sigma or greater confidence in any of the 3 energy bands 0.5 - 3.0 keV, 3.0 - 8.0 keV or 0.5 - 8.0 keV), as well as strong Galactic diffuse emission within two partially overlapping ACIS-I fields (~ 250 square arcminutes in total). The point-source sensitivity was ~ 3 x 10&lt;sup&gt;-15&lt;/sup&gt; ergs/s/cm&lt;sup&gt;2&lt;/sup&gt; in the 2 - 10 keV band and ~ 2 x 10&lt;sup&gt;-16&lt;/sup&gt; erg/s/cm&lt;sup&gt;2&lt;/sup&gt; in the 0.5 - 2 keV band The sum of all the detected point-source fluxes accounts for only ~ 10% of the total X-ray flux in the field of view. Only 26 point sources were detected in both the soft and hard bands, indicating that there are two distinct classes of X-ray source distinguished by their spectral hardness ratios. The surface number density of the hard sources is only slightly higher than that measured in high Galactic latitude regions, indicating that the majority of the hard sources are background AGNs. Following up the Chandra observation, the authors performed a near-infrared (NIR) survey with SofI at ESO/NTT. Almost all the soft X-ray sources have been identified in the NIR, and their spectral types are consistent with main-sequence stars, suggesting that most of them are nearby X-ray-active stars. On the other hand, only 22% of the hard sources had near-IR counterparts, which are presumably Galactic. From X-ray and near-IR spectral study, they are most likely to be quiescent cataclysmic variables. This Browse table was created by the HEASARC in December 2006 based on &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJ/635/214/"&gt;CDS Catalog J/ApJ/635/214/&lt;/a&gt;, the file table1.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
CGRO Timeline

The Compton Gamma-Ray Observatory (CGRO) was the second of NASA&#39;s Great Observatories. It was launched on April 5, 1991, from Space Shuttle Atlantis. It operated successfully for 9 years, and then was safely de-orbited and re-entered the Earth&#39;s atmosphere on June 4, 2000. Compton had four instruments that covered an unprecedented six decades of the electromagnetic spectrum, from 30 keV to 30 GeV. In order of increasing spectral energy coverage, these instruments were the Burst And Transient Source Experiment (BATSE), the Oriented Scintillation Spectrometer Experiment (OSSE), the Imaging Compton Telescope (CompTel), and the Energetic Gamma Ray Experiment Telescope (EGRET). BATSE viewed the full sky, as a transient monitor and is thus not included in this database table of pointed telescope observations. Also, EGRET and CompTel had wide fields of view, about 30 degrees, and, as such, viewed multiple targets per X-axis pointing. OSSE could be slewed (about one axis) independently from the spacecraft, so it typically viewed 2 targets per spacecraft Z-axis orientation, or &quot;viewing period.&quot; Viewing periods were typically two weeks long. This database table contains the CGRO observations for Cycles 1 through 9. The Cycle 1 observations for EGRET and COMPTEL were part of the All-Sky Survey with no defined targets. This database table was last updated in November 2001. The information contained therein was provided by the Compton Observatory Science Support Center (COSSC). Galactic coordinates were added to the table by the HEASARC in August 2005. Duplicate entries in the table were removed in June 2019. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
Stern et al. (2001) BATSE Gamma-Ray Burst Catalog

The Stern et al. (2001) BATSE Gamma-Ray Burst (GRB) Catalog was constructed by scanning the archival BATSE daily records (DISCLA data) covering the entire 9.1 years of BATSE&#39;s operation. 3906 GRBs were detected, 2068 of which are previously known BATSE triggers while 1838 of them are new non-triggered bursts. All events were detected in the same kind of data with 1.024 seconds time resolution and were processed with the same procedure, and thus constitute a uniform sample. This scan lowers the BATSE detection threshold to ~0.1 photons/s/cm**2. This database table was created at the HEASARC in August 2001 using the file &lt;a href="ftp://ftp.astro.su.se/pub/head/grb/catalogs/etable2.txt"&gt;ftp://ftp.astro.su.se/pub/head/grb/catalogs/etable2.txt&lt;/a&gt; on the Stockholm Observatory ftp site. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
MARS EXPRESS MARSIS RDR ACTIVE IONOSPHERE SOUNDING EXT3 V1.0

The Mars Express MARSIS Active Ionospheric Sounder (AIS) full      resolution data set includes all spectral information      calibrated in units of spectral density for the Mars Express      third extended mission, EXT3.  The data set consists of a      transmit frequency followed by a time series of spectral density      measurements of the received power.  Browse products contain      a spectrogram overview plot and individual ionograms for each      sounding  activity.

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Organization: National Aeronautics and Space Administration
Giant Metrewave Radio Telescope Lockman Hole 610-MHz Radio Source Catalog 3

In the run-up to routine observations with the upcoming generation of radio facilities, the nature of the sub-mJy radio population has been hotly debated. In this paper, the authors describe multi-frequency data designed to probe the emission mechanism that dominates in these faint radio sources. Their analysis is based on observations of the Lockman Hole (LH) using the Giant Metrewave Radio Telescope (GMRT) near Pune, India - the deepest 610-MHz imaging yet reported - together with 1.4-GHz imaging from the Very Large Array (VLA), which are well matched in resolution and sensitivity to the GMRT data: sigma&lt;sub&gt;610MHz&lt;/sub&gt; ~ 15 &micro;Jy/beam (&micro;Jy/beam), sigma}&lt;sub&gt;1.4GHz&lt;/sub&gt; ~ 6 &micro;Jy/beam, and full width at half-maximum (FWHM) ~ 5 arcseconds. The GMRT and VLA data are cross-matched to obtain the radio spectral indices for the faint radio emitters. During six 12-hr sessions in 2006 February and July, the authors obtained data at 610 MHz for three pointings (FWHM ~ 43 arcminutes) in the LH (see Table 1 of the reference paper for full details), separated by 11 arcminutes (the LOCKMAN-E, LOCK-3 and LHEX-4 fields), typically with 28 of the 30 antennas that comprise the GMRT. The total integration time in each field, after overheads, was 16 hr. The final image had a noise level in the central 100 arcmin&lt;sup&gt;2&lt;/sup&gt; of 14.7 &micro;Jy/beam, the deepest map reported at 610 MHz as of the date of publication, despite the modest integration time. New and archival data were obtained at the same three positions using the National Radio Astronomy Observatory&#39;s VLA, largely in its B configuration. This table contains 1585 sources found in the LH field at 610 MHz by the GMRT. For 19 of the sources which have multiple components, the 34 individual components are listed as well. Thus, the final table contains 1619 (1585 + 34) entries. Source extraction was based on criteria of peak brightness &gt; 5 times the local rms and integrated flux density &gt; 3 times the local rms. This table was created by the HEASARC in February 2012 based on &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/397/281"&gt;CDS Catalog J/MNRAS/397/281&lt;/a&gt; file table3.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration