Swift Master Catalog Virtual Observatory Resource

Authors
  1. Nasa
  2. HEASARC
  3. Published by
    CDS
Abstract

This table records high-level information for each Swift observation and provides access to the data archive. Each record is associated with a single observation that contains data from all instruments on board Swift. The BAT is the large field of view instrument and operates in the 10-300 keV energy band. The narrow field instruments, XRT and UVOT, operate in the X-ray and UV/optical regime, respectively. An observation is defined as a collection of snapshots, where a snapshot is defined as the time spent observing the same position continuously. Because of observing constraints, the length of a snapshot can be shorter than a single orbit and it can be interrupted because the satellite will point in a different direction of the sky or because the time allocated to that observation ends. The typical Swift observing strategy for a Gamma Ray Burst (GRB) and/or afterglow, consists of a serious of observations aimed at following the GRB and its afterglow evolution. This strategy is achieved with two different type of observations named Automatic Targets and Pre-Planned Targets. The Automatic Target is initiated on board soon after an event is triggered by the BAT. The Figure of Merit (FOM) algorithm, part of the observatory's autonomy, decides if it is worth requesting a slew maneuver to point the narrow field instruments (NFI) on Swift, XRT and UVOT, in the direction of the trigger. If the conditions to slew to the new position are satisfied, the Automatic Target observation takes place; all the instruments have a pre-set standard configuration of operating modes and filters and about 20000 seconds on source will be collected. The Pre-Planned Target observations instead are initiated from the ground once the trigger is known. These observations are planned on ground and uploaded onto the spacecraft.

Keywords
  1. observational-astronomy
  2. x-ray-sources
  3. ultraviolet-astronomy
Bibliographic source
The High Energy Astrophysics Science Archive Research Center
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/B/swift
IVOA Identifier IVOID
ivo://CDS.VizieR/B/swift
Document Object Identifer DOI

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=B/swift
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=B/swift
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=B/swift
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/B/swift/swiftlog?
https://vizier.iucaa.in/viz-bin/conesearch/B/swift/swiftlog?
http://vizieridia.saao.ac.za/viz-bin/conesearch/B/swift/swiftlog?

History

2018-01-31T12:26:44Z
Resource record created
2018-01-31T12:26:44Z
Created
2024-04-21T07:20:39Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr