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Telescope observations, star catalogs, exoplanet surveys, galaxy morphology, gravitational waves, spectroscopy
2,941 datasets
1,135 X-ray detected quasars from the Sloan Digital Sky Survey, observed in 323 Chandra images by the Chandra Multiwavelength Project, represent 36 Msec of effective exposure. The table was created by NASA's HEASARC in April 2009 based on published research. It includes quasars in the redshift range 0.2 to 5.4, with spectroscopic redshifts for about one-third of the sample.
VERITAS, a four-telescope ground-based observatory, collects about 1100 hours of good-weather data per year. This catalog lists sources observed as of April 2022, including cross-matches with other gamma-ray observations and spectral fits. The database table was ingested by NASA's HEASARC in December 2022 and is based on data files from the VERITAS Team.
Brinkmann et al. (1997) compiled a catalog of 654 quasars with measured radio emission detected by the ROSAT satellite. The data includes X-ray flux densities, power law indices, and radio-loudness classifications, with 69 objects classified as radio-quiet. This database was created by NASA's HEASARC in January 1999 based on the CDS/ADC Catalog J/A+A/319/413.
A 2026 study from the ECHO Consortium analyzed data from 8,035 mother-child pairs across 44 U.S. cohorts. The dataset examines associations between prenatal exposure to PM2.5, NO2, and O3 air pollutants and child autism spectrum disorder (ASD) traits and diagnosis. It was authored by Akhgar Ghassabian and shared under a CC-BY-NC-4.0 license.
A study dataset from 2026 containing physiological measurements from 69 participants (26 healthy young adults, 27 healthy older adults, and 16 early-stage Alzheimer's disease patients). Data was collected using two-channel broadband near-infrared spectroscopy (2bbNIRS) to measure hemoglobin and cerebrospinal fluid dynamics in the prefrontal cortex over 7-minute intervals. The dataset, authored by Fiza Saeed and shared under a CC-BY-4.0 license, quantifies cerebrovascular-CSF coupling across infraslow frequency bands.
A 282.0 KB PDF collection presents the formal resolution of the Hubble Tension as a projective effect within the GEO Framework. It includes the internal axiomatic closure, operator definitions, and a 12-digit exact reconstruction audit. The work was authored by leonel torreblanca and last updated on May 31, 2026.
Drastic changes in the age classification of marine Tertiary deposits in Australia have occurred in recent years. The recognition of Eocene deposits across southeastern Australia resulted from detailed mapping in Victoria and microfaunal analysis of sediments. The discovery of the Eocene foraminiferal genus Hantkenina at sites like Bird Rock, Torquay, confirmed an Eocene age for beds previously classified as Upper Oligocene or Miocene.
The Faint Images of the Radio Sky at Twenty cm (FIRST) Survey catalog contains radio source detections from observations between 1993 and 2011. It covers approximately 10,575 square degrees of the north and south Galactic caps, with a typical detection limit of 1 milliJansky. This 14Dec17 version is provided by the National Aeronautics and Space Administration and includes refinements for improved flux accuracy and source reliability.
66% of radio sources in the Australia Telescope Hubble Deep Field-South survey have optical counterparts to an I magnitude of 23.5 mags. The catalog presents optical identifications, including new spectroscopic observations for 98 sources and photometric redshifts from five-band imaging. It was created by the HEASARC in December 2012 based on published data from the Australia Telescope Compact Array and supporting optical telescopes.
320,556 adverse event reports for eight immune checkpoint inhibitors, involving 123,210 patients, were analyzed using disproportionality methods. The study, authored by Caihong Qu and posted in 2026, systematically ranks safety signals across System Organ Class, Standardized MedDRA Query, and Preferred Term levels. Endocrine and hepatobiliary disorders showed the strongest signals, while cardiac and respiratory toxicities had the highest mortality risks.
Andrea Zanette's 2026 paper presents the TUE-1 dark-energy parametrization from the Elastic Universe Theory. The model is tested against Pantheon+ supernovae, DESI DR2 BAO measurements, H(z) cosmic chronometers, and Planck-inspired priors. The work explores physical interpretations of the fitted coefficients in terms of vacuum relaxation and effective elastic rigidity.
Edited electric field intensity measurements from the Voyager 2 Plasma Wave Receiver spectrum analyzer, recorded in the vicinity of Jupiter's magnetosphere. The dataset consists of 4-second scans across 16 logarithmically spaced frequency channels from 10 Hz to 56.2 kHz. Data were collected and edited by the National Aeronautics and Space Administration (NASA) and last updated in the catalog on 2026-04-10.
A 26.0 KB document by Guang-Yun Jiang investigates flavonoid-based interventions for erythrocyte rejuvenation. The study demonstrates that Hydroxysafflor Yellow A can remodel hemoglobin and B3p proteins, restoring cellular properties in aged erythrocytes within hours. This research holds implications for blood storage, disease treatment, and high-altitude medicine.
Maria Luisa Martino authored a qualitative study exploring how parents reconstruct their child's autism spectrum disorder diagnosis. The dataset likely contains verbatim transcriptions of Reaction to Diagnosis Interviews administered to 21 parents (16 mothers, 5 fathers). The analysis identifies themes of suffering, struggle, and patterns of resolution regarding the diagnostic impact.
21 parents, 16 mothers and 5 fathers, participated in Reaction to Diagnosis Interviews exploring their autobiographical memories of receiving a child's ASD diagnosis within five years. Maria Luisa Martino authored this qualitative study, which was last updated on figshare in April 2026. The data comprises verbatim interview transcripts analyzed using Reflexive Thematic Analysis.
Three field surveys in Darwin Harbour, Australia, studied the effect of sewage discharge on water quality and sediment processes in three tidal creeks. The dataset, provided by the Australian Ocean Data Network, compares hypertrophic, oligotrophic-mesotrophic, and pristine reference sites. It captures differences in benthic nutrient fluxes, pelagic primary production, and denitrification efficiency between the creeks.
60 months of observation from March 2005 to March 2010 by the Swift Burst Alert Telescope (BAT) in the 15-55 keV band. The catalog contains 720 detected sources, of which 428 are associated with nearby active galactic nuclei (AGNs), and was created by NASA HEASARC in May 2012 based on published research. It includes at least 15 confirmed Compton-thick AGNs and refines the log N - log S distribution of AGNs above 10 keV.
A catalog of 2976 unique X-ray point sources detected by the Chandra ACIS-I instrument across four DEEP2 galaxy survey fields covering a combined ~3.2 deg². The table includes optical counterpart properties for 2126 (~71.4%) of the X-ray sources, such as magnitude and redshift. This catalog was created by NASA HEASARC in October 2012 based on data from a published astrophysical journal.
A 2007 catalog of 242 serendipitously detected galaxy clusters from a 397 square degree ROSAT PSPC X-ray survey. The survey, created by NASA HEASARC, detected 287 extended X-ray sources, with 266 optically confirmed, and is optimized to sample high-redshift, massive clusters. It demonstrates a decrease in the number density of luminous clusters at redshifts greater than 0.3.
A 63-ks Chandra ACIS-I observation on 2010 September 25 yielded a catalog of 95 X-ray point sources in the nearby spiral galaxy NGC 300. The catalog was created by the HEASARC in September 2014 based on data from the Chandra Local Volume Survey and includes cross-correlation with XMM-Newton data and optical counterpart analysis from Hubble Space Telescope imaging. Sources were detected down to a limiting unabsorbed luminosity of ~10^36 erg/s in the 0.35-8 keV band.