GRB/IPN ivo://nasa.heasarc/ipngrb NASA/GSFC HEASARC Hurley 2026-04-10 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov GRB The Interplanetary Network (IPN) is a group of spacecraft equipped with gamma-ray burst detectors used to localize gamma-ray bursts (GRB) and soft gamma repeaters (SGRs, or magnetars). The astronomical locations of GRBs are determined by the comparison of the arrival times of the event at the locations of the detectors used on different space missions. The precision is proportional to the distance of spacecraft separations, so that the localizational accuracy of a network with baselines of thousands of light-seconds can be equal or superior to that of any other technique. The primary disadvantage of the IPN method, however, is the 1-day to 1.5-day delay in the acquisition of data from all the spacecraft in the network. Interplanetary GRB networks have been in existence since 1977, contributing to the studies of various astrophysical gamma-ray transients, most notably GRBs and SGRs (soft gamma repeaters). The IPN3 began operations in 1990, with the launch of the Ulysses spacecraft. It was joined by the Compton Gamma Ray Observatory in 1991. Pioneer Venus Orbiter, Mars Observer, and the Italian X-ray astronomy satellite BeppoSAX were part of the network while they were operating. Twenty-six experiments or missions have joined the network so far. Today, the main spacecrafts contributing their data are Konus-WIND, Mars Odyssey, INTEGRAL, RHESSI, Swift, Agile, BepiColombo, and Fermi. XMM-Newton and MAXI are kept to record the cosmic ray and SGR but not used for triangulation because of the different energy range. The IPNGRB database table is derived from a list provided by Kevin Hurley <khurley@ssl.berkeley.edu>, based on the IPN3. The initial list also includes particles and solar events as well as unconfirmed SGRs and GRBs. The IPNGRB database includes only the observations of confirmed cosmic gamma-ray bursts and SGR since the launch of the Ulysses spacecraft. It is updated every time a new list is provided to the HEASARC. This HEASARC catalog is derived from the master list of IPN3 events provided by Kevin Hurley. He also provided a FORTRAN program that generates the list of selected events. The output of this program is run at GSFC and ingested into the HEASARC database system. Information on the IPN3 system is available at <a href="http://ipn3.ssl.berkeley.edu/">http://ipn3.ssl.berkeley.edu/</a>. <p> Information on the IPN can be found at <a href="http://heasarc.gsfc.nasa.gov/docs/heasarc/missions/ipn.html">http://heasarc.gsfc.nasa.gov/docs/heasarc/missions/ipn.html</a>. <p> In December 2021 Kevin Hurley passed away. He was one of the initiator of the IPN and its evolution. The last table provided is dated August 2021. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/ipngrb.html Archive Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=ipngrb GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_ipngrb&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GAMMA-RAY BURSTS 0.0166666666666667 Gamma-ray public ipngrb Gamma-Ray Bursts from the Interplanetary Network other_missions Observed by XMM-Newton, CALET, GECAM, Insight, or AstroSat? meta.code;obs char nullable yohkoh Observed by Yohkoh? meta.code;obs char nullable batse_gro Observed by BATSE (CGRO)? meta.code;obs char nullable konus_wind Observed by KONUS (GGS-WIND)? meta.code;obs char nullable "time" Date/Time When Event Occurred mjd time.start double nullable egret_gro Observed by EGRET (CGRO)? meta.code;obs char nullable mars_observer_odyssey Observed by Mars Observer/Odyssey? meta.code;obs char nullable watch_granat Observed by WATCH (Granat)? meta.code;obs char nullable hete2 Observed by HETE-2? meta.code;obs char nullable coronas Observed by the Russian spacecraft Koronas-I? meta.code;obs char nullable time_event Time of the Event in "HH:MM:SS" Format time.start char nullable "second" Number of Seconds from Beginning of Day of When Event Occurred s time.epoch int nullable mars_cross Mars Crossing Window (seconds) s meta.code;obs int nullable asm_rxte Observed by ASM (RXTE)? meta.code;obs char nullable sigma_granat Observed by SIGMA (Granat)? meta.code;obs char nullable sross_c Observed by SROSS-C2? meta.code;obs char nullable ulysses Observed by Ulysses? meta.code char nullable dms Observed by Defense Meteorological Satellites? meta.code;obs char nullable swift Observed by Swift? meta.code;obs char nullable tgrs_wind Observed by TGRS (GGS-WIND)? meta.code;obs char nullable fermi Observed by Fermi? meta.code;obs char nullable integral Observed by INTEGRAL? meta.code;obs char nullable ulysses_cross Ulysses Crossing Window (seconds) s time.crossing int nullable num_sat Satellite Number to Which the Time of the Event Refers short nullable day_year Day of the Year When Event Occurred time.epoch short nullable suzaku Observed by Suzaku? meta.code;obs char nullable watch_eureca Observed by WATCH (EURECA)? meta.code;obs char nullable agile Observed by AGILE? meta.code;obs char nullable "__row" System index column char nullable osse_gro Observed by OSSE (CGRO)? meta.code;obs char nullable maxi Observed by MAXI? meta.code;obs char nullable comptel_gro Observed by Comptel (CGRO)? meta.code;obs char nullable earth_cross Earth Crossing Window (seconds) s time.crossing int nullable gbd_ginga Observed by GINGA Gamma-ray Burst Detector? meta.code;obs char nullable event_number Event Number meta.id;meta.main int nullable comment Comment Field meta.note char nullable event_id Identification of Event src.class char nullable messenger_bcolombo Observed by MESSENGER or BepiColombo? meta.code;obs char nullable date_event Date of Event in "DD MON YY" Format time.epoch char nullable bepposax Observed by BeppoSAX? meta.code;obs char nullable near Observed by NEAR? meta.code;obs char nullable rhessi Observed by RHESSI? meta.code;obs char nullable venus_cross Venus Crossing Window (seconds) s time.crossing int nullable phebus_granat Observed by PHEBUS (Granat)? meta.code;obs char nullable pvo Observed by PVO? meta.code;obs char nullable