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SWIFTGRB - Swift Gamma Ray Bursts Catalog

HEASARC
Archive

Overview

This table contains the results of the Gamma Ray Bursts (GRBs) observed by Swift. The GRBs included are either triggered by Swift or follow-ups of GRBs discovered by other satellites. The table reports results and/or information, when possible, for each burst from all three instruments on board Swift, e.g. the Bursts Alert Telescope, BAT,the X-ray Telescope, XRT, and the Ultra-Violet Optical Telescope, UVOT. The results are obtained from a standard analysis processing of the Swift data which creates several data products available via this table. Additional information on the burst either from Gamma-ray and X-ray observations or results from ground-based telescopes are extracted from the GCN and the BAT Burst catalog. This table's data products are also available from the dedicated web pages http://heasarc.gsfc.nasa.gov/docs/swift/archive/grbsummary/.

The current database contains all bursts observed by Swift from the beginning of the mission, 20 Nov 2004 up to 31 Dec 2012. The data products are available for Bursts detected after 15 Feb 2005.


Bulletin

The SWIFTGRB database table was last updated on 30 October 2014.

References

Donato D., Angelini L., Padgett C.A., Reichard T., Gehrels N., Marshall F.E., Sakamoto T. 2012, ApJS, 203, 2D

Band D, Matteson J., Ford L., Schaefer B., Palmer D., et al., 1993, ApJ, 413, 281

Provenance

This online catalog is created by the HEASARC based on machine-readable tables compiled by the HEASARC staff. Details are published in Donato et al (2012).

Parameters

Name
This field contains the designation of the pointed source. It is written using the convention "GRB YYMMDD", with a space between the GRB prefix and the date. If multiple GRBs occur during one day, the convention is to append a letter to alphabetically differentiate the GRBs, as in "GRB YYMMDDn", where "n" is a letter starting from A. After January 1st, 2010 all the GRB names contain the letter.

Target_ID
This field uniquely identifies the burst. Its value is identical to the Target_ID assigned on board. It is a numerical value that can include up to 8 digits. A value in the range 20000-29999 is related to GRBs triggered by other missions or discovered from ground analysis of BAT data. A value higher than 100000 is assigned to BAT triggers.

Other_ID
This field contains an alternative burst identifier, where applicable. The value highly depends on the mission or telescope that triggered the GRB.

Det_Flag
The detection flag indicates if the GRB was triggered by the Swift satellite only ("S"), by other missions or telescopes only ("O"), or by both ("B").

Slew_Info
This field is used to report the reason for a delay in follow-up observation. The 3-letter values have the following meanings:

    BTS = GRB candidate automatically detected by the BAT Slew Survey (BATSS)
    DIS = automated slewing not enabled at the time of the trigger
    EAR = Earth constraint
    GRN = GRB candidate found with ground processing
    MOO = Moon constraint
    OBS = observational constraint, either Earth or Moon
    SUN = Sun constraint
    TOO = execution of a target of opportunity observation
  

RA
This corresponds to the best right ascension available, obtained from one of the Swift instruments or from other space or ground measurements in equatorial coordinates.

Dec
This corresponds to the best declination available, obtained from one of the Swift instruments or from other space or ground measurements in equatorial coordinates.

Pos_Err
The error in the best position is given in arcseconds.

LII
This field contains the Galactic Longitude of the best position available, in degrees.

BII
This field contains the Galactic Latitude of the best position available, in degrees.

Pos_Flag
This flag indicates whether the best position was obtained from the spatial analysis of BAT ("B"), XRT ("X"), UVOT ("U"), ground telescopes ("G"), or other missions instruments ("O").

Pos_Ref
This field reports the reference for the best position using the ADS reference code.

Start_Time
This field corresponds to the start time of the first Swift observation available. It is given as "YYYY-MM-DD hh:mm:ss.s" in UTC.

Stop_Time
This field corresponds to the stop time of the last Swift observation available. It is given as "YYYY-MM-DD hh:mm:ss.s" in UTC.

Duration
This field contains the duration of the observations between the start and stop times. The value is given in days.

Trigger_Time
For Swift bursts (detected by BAT), this corresponds to the start time of the foreground time interval of the image from which the GRB is detected on-board. For the other missions/telescopes, this time is taken from the GCN Circular. The value is given as "YYYY-MM-DD hh:mm:ss.s" in UTC.

Trigger_Ref
This field contains the reference for the trigger time using the ADS reference code.

BAT_Detection
If the GRB has been observed by BAT, the value is set to "Y". If the GRB was detected by another mission/telescope and was not in the BAT field of view, the value is set to "U" (unobserved). If the GRB was not detected by BAT, the value is set to "N".

BAT_Dettype
This field contains a flag that indicates whether this is a rate ("R") or an image ("I") trigger.

BAT_RA
The best BAT right ascension (J2000), as recalculated on ground, in degrees.

BAT_Dec
The best BAT declination (J2000), as recalculated on ground, in degrees.

BAT_Pos_Err
This field contains the error in the best BAT position, in arcminutes.

BAT_Pos_Ref
This field reports the reference for the best BAT position using the ADS reference code.

BAT_Theta
The angle of the target (trigger) about the BAT boresight, in degrees. Values range from 0 to 90 degrees. If set to 0, it is in the spacecraft +Y direction. If it is set to 90, it is in the spacecraft -Z direction.

BAT_Phi
The angular separation between the target (trigger) and the BAT boresight, in degrees. Values range from -180 to 180 degrees.

BAT_Imagesig
The BAT image detection significance of the trigger provided by the on-board analysis.

BAT_T90
T90 measures the duration of the time interval during which 90% of the total observed counts have been detected. The start and stop of the T90 interval are defined by the time at which 5% and 95% of the total counts have been detected. This value, given in seconds, is derived for the energy band 15-150 keV.

BAT_T50
T50 measures the duration of the time interval during which 50% of the total observed counts have been detected. The start and stop of the T50 interval are defined by the time at which 25% and 75% of the total counts have been detected. This value, given in seconds, is derived for the energy band 15-150 keV.

BAT_Start
The start time, in seconds, from the BAT trigger time of the event data.

BAT_Stop
The stop time, in seconds, from the BAT trigger time of the event data.

BAT_T100_Start
The BAT start time, in seconds, for the interval where the fluence and spectra are calculated.

BAT_T100_Stop
The BAT stop time, in seconds, for the interval where the fluence and spectra are calculated.

BAT_Fluence_Model
This field indicates the BAT model used to derive the fluence, coded as follows:

    PL  = simple power-law model
    CPL = cut-off power-law model
  

BAT_Fluence
This field contains the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 15-150 keV energy band.

BAT_Fluence_Err
The error in the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 15-150keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Fluence1
This field contains the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 15-25 keV energy band.

BAT_Fluence1_Err
The error in the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 15-25 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Fluence2
This field contains the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 25-50 keV energy band.

BAT_Fluence2_Err
The error in the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 25-50 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Fluence3
This field contains the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 50-100 keV energy band.

BAT_Fluence3_Err
The error in the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 50-100 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Fluence4
This field contains the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 100-150 keV energy band.

BAT_Fluence4_Err
The error in the BAT fluence (in ergs cm-2) obtained in the T100 interval in the 100-150 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peak_Time
This parameter reports the time of the BAT peak flux, recorded as seconds since the time of the trigger.

BAT_Peak_Model
This field indicates the BAT model used to derive the peak flux, coded as follows:

    PL  = simple power-law model
    CPL = cut-off power-law model
  

BAT_Peak_Flux
This parameter contains the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 15-150 keV energy band.

BAT_Peak_Flux_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 15-150 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peak_Flux1
This parameter contains the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 15-25 keV energy band.

BAT_Peak_Flux1_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 15-25 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peak_Flux2
This parameter contains the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 25-50 keV energy band.

BAT_Peak_Flux2_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 25-50 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peak_Flux3
This parameter contains the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 50-100 keV energy band.

BAT_Peak_Flux3_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 50-100 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peak_Flux4
This parameter contains the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 100-150 keV energy band.

BAT_Peak_Flux4_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in ergs cm-2 s-1) in the 100-150 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peakfluxp
This parameter contains the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 15-150 keV energy band.

BAT_Peakfluxp_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 15-150 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peakfluxp1
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 15-25 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peakfluxp1_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 15-25 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peakfluxp2
This parameter contains the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 25-50 keV energy band.

BAT_Peakfluxp2_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 25-50 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peakfluxp3
This parameter contains the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 50-100 keV energy band.

BAT_Peakfluxp3_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 50-100 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Peakfluxp4
This parameter contains the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 100-150 keV energy band.

BAT_Peakfluxp4_Err
This parameter contains the uncertainty in the BAT integrated 1-s peak flux (in photons cm-2 s-1) in the 100-150 keV energy band. If no value is reported, the measurement is an upper limit.

BAT_Plsl
This parameter reports the time-averaged photon index obtained from fitting the simple power-law model to the spectral distribution of the events in the T100 interval in the 15-150 keV energy band. This value is always given, regardless if this is the best fit.

BAT_Plsl_Err
This is the single-sided error for the time-averaged photon index obtained from fitting the simple power-law model to the spectral distribution of the events in the T100 interval in the 15-150 keV energy band.

BAT_PL_Chi2
Reduced chi squared for the BAT spectral fit with the simple power-law model.

BAT_PL_DoF
The number of degrees of freedom for the BAT spectral fit with the simple power-law model. The value is always set to 57 for this model.

BAT_Ctslope
The time-averaged photon index obtained from fitting with the exponential cut-off power-law model the spectral distribution of the events in the T100 interval in the 15-150 keV energy band. This value is given only if fit is better than the one obtained with a simple power-law model (i.e., if the difference between the chi squared values of the simple and the cut-off power-law models is greater than 6).

BAT_Ctslope_Err
This is the low error for the time-averaged photon index obtained from fitting the exponential cut-off power-law model to the spectral distribution of the events in the T100 interval in the 15-150 keV energy band.

BAT_Ctslope_N_Err
This is the high error for the time-averaged photon index obtained from fitting the exponential cut-off power-law model to the spectral distribution of the events in the T100 interval in the 15-150 keV energy band.

BAT_Ctezero
This is the value of the observed energy, in keV, where the exponential cut-off eventually overwhelms the power-law behavior.

BAT_Ctezero_Err
The low error of the exponential cut-off observed energy, in keV.

BAT_Ctezero_N_Err
The high error of the exponential cut-off observed energy, in keV.

BAT_Ct_Chi2
This parameter contains the reduced chi squared for the spectral fit with the exponential cut-off power-law model.

BAT_Ct_DoF
The number of degrees of freedom for the spectral fit with the exponential cut-off power-law model. The value is always set to 56 for this model.

BAT_Epeak
Observed peak energy, in keV, in the nu-F_nu spectrum. This parameter is given when it is known either from the BAT or other missions or telescopes.

BAT_Epeak_Ref
This field reports if the peak energy is from the BAT measurement.

BAT_Eiso
This parameter contains the estimated broad band isotropic equivalent energy in the 15-150 keV energy band (in ergs s-1). This parameter is given only if the redshift is known.

BAT_Eiso1000
This parameter contains the estimated broad band isotropic equivalent energy in the 1-1000 keV energy band (in ergs s-1). This parameter is given only if the redshift is known.

BAT_Eiso_Alpha
This parameter contains the low-energy spectral index defined in the smoothly broken power-law proposed by Band (1993).

BAT_Eiso_Beta
This parameter contains the high-energy spectral index defined in the smoothly broken power-law proposed by Band (1993).

BAT_Eiso_Norm
This parameter contains the normalization (at 100 keV) defined in the smoothly broken power-law proposed by Band (1993).

BAT_Eiso_Dur
This field reports the observed GRB duration, in seconds, in which the isotropic equivalent energy is estimated.

BAT_Eiso_Ref
This field reports the reference for the observed GRB duration using the ADS reference code.

BAT_Redshift
This field reports the redshift used for the isotropic equivalent energy calculation.

BAT_Hrd1
This parameter contains the estimated hardness ratio, defined as the ratio of the fluence in the 25-50 keV and in the 15-25 keV energy ranges.

BAT_Hrd1_Err
This parameter contains the estimated error on the 25-50 keV to 15-25 keV hardness ratio.

BAT_Hrd2
This parameter contains the estimated hardness ratio, defined as the ratio of the fluence in the 50-100 keV and in the 15-25 keV energy ranges.

BAT_Hrd2_Err
This parameter contains the estimated error on the 50-100 keV to 15-25 keV hardness ratio.

BAT_Comment
This field reports comments on the BAT analysis, if needed.

XRT_Detection
This parameter is set to "Y" or "N" if the GRB has been or has been not detected by XRT. It is set to "U" if no XRT observations are available.

XRT_RA
The best XRT right ascension, as recalculated on ground, in degrees.

XRT_Dec
The best XRT right declination, as recalculated on ground, in degrees.

XRT_Pos_Err
This field contains the error in the best XRT position, in arcseconds.

XRT_Pos_Ref
This field reports the reference for the best XRT position using the ADS reference code.

XRT_OnSource
This parameter contains the time after the trigger, in seconds, when the XRT started operations.

XRT_C100_Rate
This field reports the XRT corrected count/s for the first 100 counts interval in the 0.3-10 keV band.

XRT_C100_Start
This field reports the XRT start time, in seconds, of the first 100 counts time interval.

XRT_C100_Stop
This field reports the XRT stop time, in seconds, of the first 100 counts time interval.

XRT_C100_Expo
This field reports the XRT duration, in seconds, of the first 100 counts time interval.

XRT_C100_Mode
This field indicates the XRT mode used to derive the first 100 counts interval, coded as follows:

    PUPD = Piled-Up Photodiode
    LRPD = Low-Rate Photodiode
    WT   = Windowed Timing mode
    PC   = Photon-Counting mode
  

XRT_E1_Rate
This field reports the XRT corrected count rate (count/s) observed across the 300-seconds mark after the burst in the 0.3-10 keV band. The rate is estimated as follows: 1) if there are at least 100 counts detected across 300 seconds, the time range corresponds to the arrival of these counts; 2) if there are less than 100 counts, the time range is the full observation (if there is not a detection, an upper limit is provided); 3) if the observation starts 400 seconds or more after the GRB trigger time, no value is reported.

XRT_E1_Rate_Err
This field reports the error on the XRT corrected count rate (count/s) observed across the 300-sec mark after the burst in the 0.3-10 keV band. If the rate corresponds to an upper limit, the error is set to 0.

XRT_E1_Rate1
This field reports the XRT corrected count rate (count/s) observed at 300 sec in the 0.3-1 keV band. Criteria similar to those applied to column xrt_e1_rate have been adopted.

XRT_E1_Rate1_Err
This field reports the error on the XRT corrected count rate (count/s) observed at 300 sec in the 0.3-1 keV band. If the rate corresponds to an upper limit, the error is set to 0.

XRT_E1_Rate2
This field reports the XRT corrected count rate (count/s) observed at 300 sec in the 1-2 keV band. Criteria similar to those applied to column xrt_e1_rate have been adopted.

XRT_E1_Rate2_Err
This field reports the error on the XRT corrected count rate (count/s) observed at 300 sec in the 1-2 keV band. If the rate corresponds to an upper limit, the error is set to 0.

XRT_E1_Rate3
This field reports the XRT corrected count rate (count/s) observed at 300 sec in the 2-10 keV band. Criteria similar to those applied to column xrt_e1_rate have been adopted.

XRT_E1_Rate3_Err
This field reports the error on the XRT corrected count rate (count/s) observed at 300 sec in the 2-10 keV band. If the rate corresponds to an upper limit, the error is set to 0.

XRT_E1_Start
This field reports the XRT start time, in seconds, of the 300-sec count rate, estimated from the time of the burst's trigger.

XRT_E1_Stop
This field reports the XRT stop time, in seconds, of the 300-sec count rate, estimated from the time of the burst's trigger.

XRT_E1_Expo
This field reports the XRT total exposure time, in seconds, for the 300-sec count rate.

XRT_Hrd1
This parameter contains the estimated hardness ratio, defined as the ratio of the 300-sec corrected rates obtained in the 0.3-1 keV and 1-2 keV energy bands.

XRT_Hrd1_Err
This parameter contains the error on the 0.3-1 keV vs 1-2 keV hardness ratio.

XRT_Hrd2
This parameter contains the estimated hardness ratio, defined as the ratio of the 300-sec corrected rates obtained in the 1-2 keV and 2-10 keV energy bands.

XRT_Hrd2_Err
This parameter contains the error on the 1-2 keV vs 2-10 keV hardness ratio.

XRT_E1_Mode
This field reports the XRT mode used to derive the 300-sec count rate (count/s) observed across the 300 seconds mark after the burst in the 0.3-10 keV band.

XRT_Lcchange
This field reports the number of breaks observed in the XRT 0.3-10 keV corrected light curve.

XRT_Flare
This field is used to report flares in the XRT 0.3-10 keV corrected light curve are observed ("Y") or not ("N").

UVOT_Detection
This parameter is set to "Y" or "N" if the GRB has been or has been not detected by UVOT. It is set to "U" if no UVOT observations are available.

UVOT_RA
The best UVOT right ascension, as recalculated on ground, in degrees.

UVOT_Dec
The best UVOT declination, as recalculated on ground, in degrees.

UVOT_Pos_Err
This field contains the error in the best UVOT position, in arcseconds.

UVOT_Pos_Ref
This field reports the reference for the best UVOT position using the ADS reference code.

UVOT_OnSource
This parameter contains the time after the trigger, in seconds, when the UVOT started operations.

UVOT_VV_Flux
This field reports the UVOT observed flux density, in ergs cm-2 s-1 A-1, from the first exposure on source with the V filter.

UVOT_VV_Mag
This field reports the UVOT observed magnitude from the first exposure on source with the V filter.

UVOT_VV_Mag_Err
This field reports the UVOT observed magnitude error from the first exposure on source with the V filter. If an upper limit was obtained, this parameter is set to 0.

UVOT_VV_Start
This field reports the UVOT start time of the first exposure on source with the V filter. The time is in seconds after the burst's trigger time.

UVOT_VV_Stop
This field reports the UVOT stop time of the first exposure on source with the V filter. The time is in seconds after the burst's trigger time.

UVOT_VV_Expo
This field reports the length of the first exposure, in seconds, on source with the V filter.

UVOT_W1_Flux
This field reports the UVOT observed flux density, in ergs cm-2 s-1 A-1, from the first exposure on source with the W1 filter.

UVOT_W1_Mag
This field reports the UVOT observed magnitude from the first exposure on source with the W1 filter.

UVOT_W1_Mag_Err
This field reports the UVOT observed magnitude error from the first exposure on source with the W1 filter. If an upper limit was obtained, this parameter is set to 0.

UVOT_W1_Start
This field reports the UVOT start time of the first exposure on source with the UVW1 filter. The time is in seconds after the burst's trigger time.

UVOT_W1_Stop
This field reports the UVOT stop time of the first exposure on source with the UVW1 filter. The time is in seconds after the burst's trigger time.

UVOT_W1_Expo
This field reports the length of the first exposure, in seconds, on source with the UVW1 filter.

Redshift
This parameter contains the value of the optical afterglow redshift, if measured.

Redshift_Err
This parameter contains the value of the optical afterglow redshift error, if measured.

Redshift_Type
This field indicates the origin of the redshift measurement. The letter values have the following meanings:

    P  = photometric
    PL = photometric upper/lower limit
    S  = spectroscopic
    SL = spectroscopic upper/lower limit
    G  = guess
  

Redshift_Line
This field indicates if the spectroscopic redshift measurement have been obtained using absorption ("A") lines, emission ("E") lines, or a combination of the two ("B").

Redshift_From
This field indicates if the redshift is from Swift ("S") or other observatories ("O").

Redshift_Ref
This field reports the reference on the redshift measurement using the ADS reference code.

Galactic_NH
This field reports the average Galactic H I column density (n_H, in units of cm-2) at the GRB position. The value is estimated using the Dicky and Lockman radio map.

Followup
This field indicates if any follow-up observation have been ("Y") or have not been ("N") performed by other observatories or telescopes.

Radio_Detection
This field indicates if there is a detection at radio frequencies.

Radio_Ref
This field reports the reference of the radio observation using the ADS reference code.

Infra_Detection
This field indicates if there is ("Y") or there is not ("N") a detection at infrared frequencies.

Infra_Ref
This field reports the reference of the infrared observation using the ADS reference code.

Opt_Detection
This field indicates if there is ("Y") or there is not ("N") a detection at optical frequencies.

Opt_Ref
This field reports the reference of the optical observation using the ADS reference code.

Ot_RA
This parameter contains the best right ascension, in degrees, available for the optical transient, obtained from radio, infrared, or optical observations or from the UVOT data.

Ot_Dec
This parameter contains the best declination, in degrees, available for the optical transient, obtained from radio, infrared, or optical observations or from the UVOT data.

Ot_Pos_Err
This parameter contains the error, in arcseconds, on the best position for the optical transient.

Ot_Pos_Ref
This field contains the reference for the best position of the optical transient using the ADS reference code.

Other_Obs
This field contains the name of another high energy observatory that triggered the GRB. The field is left blank if the GRB was triggered by Swift. A name is also reported if the number of observatories that observed the GRB exceeds 4.

Other_Obs_Ref
This field reports the reference for the observation performed by another high energy observatory using the ADS reference code.

Other_Obs2
This field contains the name of another high energy observatory that triggered or observed the GRB.

Other_Obs2_Ref
This field reports the reference for the observation performed by another high energy observatory using the ADS reference code.

Other_Obs3
This field contains the name of another high energy observatory that triggered or observed the GRB.

Other_Obs3_Ref
This field reports the reference for the observation performed by another high energy observatory using the ADS reference code.

Other_Obs4
This field contains the name of another high energy observatory that triggered or observed the GRB.

Other_Obs4_Ref
This field reports the reference for the observation performed by another high energy observatory using the ADS reference code.

Supernova_Flag
This parameter is set to "Y" or "N" if there is or there is not a possible supernova association with optical transient. It is set to "P" if the association is not certain.

Galaxy_Flag
This parameter is set to "Y" or "N" if a host galaxy is or is not associated with an optical transient. It is set to "P" if the association is not certain.

Galaxy_Name
This field contains the name of the host galaxy, if known.

Galaxy_Type
This field contains the host galaxy type, if known.

Galaxy_RA
This field contains the right ascension of the host galaxy position.

Galaxy_Dec
This field contains the declination of the host galaxy position.

Galaxy_Pos_Ref
This field reports the reference of the host galaxy position using the ADS reference code.

Galaxy_Redshift
This field contains the redshift of the host galaxy, if known.

Galaxy_Ref
This field reports the reference from where the host galaxy information is derived (using the SIMBAD catalog code) or the reference of published paper using the ADS reference code.

Galaxy_Offset
This field contains the offset of the host galaxy and the best GRB position, in arcseconds.

Ground_Counterpart
This field contains a flag that indicates whether a counterpart of the GRB was detected on ground at radio, infrared, or optical frequencies. The parameter is set to "Y" if the optical transient have been observed at least in one of the frequencies; "P" if there is only a possible detection; "U" if no observation was performed in all the frequencies; or "N" if the field was observed but no detection has been claimed for all the used frequencies.

Web_Page
This field contains a link to the web page where the results of the data analysis for each instrument are presented.

Comments
This field contains additional information that was not possible to insert in any other column.


Contact Person

Questions regarding the SWIFTGRB database table can be addressed to the HEASARC User Hotline.
Page Author: Browse Software Development Team
Last Modified: Tuesday, 16-Dec-2014 16:40:09 EST