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J/ApJS/268/20
  XRT/UVOT obs. of the TeV-detected blazar Mrk501 (Kapanadze+, 2023)
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2023ApJS..268...20K
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1.J/ApJS/268/20/table60.3-10keV intraday variabilities (IDVs) detected at the 99.997% and 99.5% confidence levels (76 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  Set   [1/2] IDV subset (Note 1)   (meta.note)
  ObsID1 (char) XRT Observation identifier, 1st observation (Note 2)   (meta.id;obs)
  ObsID2  (n) XRT second observation ID if needed (meta.id;obs)
  Date1 "Y:M:D" (n)Date of ObsID1 (time.epoch)
  Date2 "Y:M:D" (n)Date of ObsID2, if needed (time.epoch)
  MJD1 d [49576/59919] Modified Julian date, ObsID1 (time.epoch)
  MJD2 d (n) [56787/59780] Modified Julian date, ObsID2 (time.epoch)
  ExpTime s [0.07/23.82] Total length of the particular observation (Note 1)   (time.expo)
  chi2r   [2.42/37.2] Reduced χ2 (meta.note)
  dof   [3/25] Degrees of freedom of fit (stat.fit.dof)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Bin s (n) [60/120] Time bin (time.interval)
  Fvar % [3.8/19.2] Fractional variability amplitude (phot.mag;arith.ratio)
  e_Fvar % [0.6/3] Uncertainty in fvar (stat.error)
  a1  (n) [1.6/2.2] Logparabolic photon index, or lower limit of range (spect.index)
  e_a1  (n) [0.03/0.07] Uncertainty in a1 (stat.error)
  a2  (n) [1.7/2.2] Logparabolic photon index, upper limit of range if needed (spect.index)
  e_a2  (n) [0.03/0.05] Uncertainty in a2 (stat.error)
  Gamma1  (n) [1.7/2.3] 0.3-10keV photon index, or lower limit of range (spect.index)
  e_Gamma1  (n) [0.03/0.06] Uncertainty in Gamma1 (stat.error)
  Gamma2  (n) [1.8/2.3] 0.3-10keV photon index, upper limit of range if needed (spect.index)
  e_Gamma2  (n) [0.03/0.05] Uncertainty in Gamma2 (stat.error)
  b1  (n) [0.1/2.2] Curvature parameter, or lower limit of range (stat.fit.param)
  e_b1  (n) [0.06/0.2] Uncertainty in b1 (stat.error)
  b2  (n) [0.17/0.5] Curvature parameter, upper limit of range if needed (stat.fit.param)
  e_b2  (n) [0.07/0.2] Uncertainty in b2 (stat.error)
  Ep1 keV (n) [0.26/4.3] Synchrotron SED peak, or lower limit of range (em.energy)
  e_Ep1 keV (n) [0.08/0.4] Uncertainty in Ep1 (stat.error)
  Ep2 keV (n) [0.7/6] Synchrotron SED peak, upper limit of range if needed (em.energy)
  e_Ep2 keV (n) [0.09/0.6] Uncertainty in Ep2 (stat.error)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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