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• Organization: National Aeronautics and Space Administration
• Updated: 2025-09-10 | Harvested: September 14, 2025 at 06:18 AM

Omega Centauri (NGC 5139) is one of the best studied objects in our galaxy. It is the most massive globular cluster (5.1 x 10<sup>6</sup> solar masses), and is characterized by large...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-09-10 | Harvested: September 15, 2025 at 12:34 AM

The authors have detected 523 X-ray sources in a survey of the Small Magellanic Cloud (SMC) Wing with the Chandra X-ray Observatory. By cross-correlating the X-ray data with optical and...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-09-10 | Harvested: September 29, 2025 at 02:31 AM

A survey of the entire Einstein IPC database (a total of 5934 sources) has been carried out in order to select objects with strong components of ultrasoft X-ray emission (i.e., emission below 0.5...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-09-10 | Harvested: October 30, 2025 at 09:25 PM

The Very Energetic Radiation Imaging Telescope Array System (VERITAS) is a major ground-based gamma-ray observatory operating at the Fred Lawrence Whipple Observatory (FLWO) in southern Arizona,...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-09-10 | Harvested: September 14, 2025 at 06:09 AM

The Fermi LAT 4-Year Point Source Catalog (3FGL) is a catalog of high-energy gamma-ray sources detected by the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope (Fermi) mission...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-09-10 | Harvested: November 04, 2025 at 09:55 PM

This catalog includes the hard X-ray sources detected in the first 157 months of observations with the Burst Alert Telescope (BAT) coded-mask imager on board the Swift observatory. The results of...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-04-23 | Harvested: October 31, 2025 at 09:59 PM

The Fermi GBM Daily Data database table contains entries for each day for which GBM data has been processed.

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-04-01 | Harvested: June 28, 2025 at 10:58 AM

This utility permits you to download the most current version of the spacecraft (FT2) file predicting the LAT's pointing for a given mission week. The FT2 file is a FITS-formatted file describing...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-07-17 | Harvested: October 25, 2025 at 09:40 PM

The Fermi Gamma-Ray Burst Monitor (GBM) is not a pointed or imaging instrument. To determine fluxes for known sources, we measure the change in the count rate observed in the NaI (or BGO)...

• Organization: National Aeronautics and Space Administration
• Updated: 2025-04-23 | Harvested: June 28, 2025 at 09:03 AM

This table lists all of the triggers observed by one or more of the 14 GBM detectors (12 NaI and 2 BGO). Note that there are two Browse catalogs resulting from GBM triggers. All GBM triggers are...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-04-23 | Harvested: June 28, 2025 at 09:15 AM

This table lists all of the triggers observed by a subset of the 14 GBM detectors (12 NaI and 2 BGO) which have been classified as gamma-ray bursts (GRBs). Note that there are two Browse catalogs...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-07-17 | Harvested: July 17, 2025 at 06:32 PM

This List is based on GCN Circulars issued by the GBM collaboration.