{
  "editedOn": 1791208246374,
  "submittedHow": "email",
  "eventType": [],
  "subject": "EP#01709320865: Swift-XRT observations",
  "createdOn": 1791190708459,
  "submitter": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
  "circularId": 45808,
  "version": 2,
  "body": "P.A. Evans (U. Leicester), J.A. Kennea (PSU), E. Ambrosi  (INAF-IASFPA) , A.P.\nBeardmore (U. Leicester), M.G. Bernardini (INAF-OAB), R. Brivio (INAF-OAB), D.N.\nBurrows (PSU), S. Campana (INAF-OAB), M. Capalbi (INAF-OAR), A. D'Ai (INAF-IASFPA),\nP. D'Avanzo (INAF-OAB), V. D'Elia (SSDC & INAF-OAR), S. Dichiara (PSU), M. Ferro\n(INAF-OAB), A. Melandri (INAF-OAR), J.P. Osborne (U. Leicester), K.L. Page (U.\nLeicester), M. Perri (SSDC & INAF-OAR), C. Salvaggio (INAF-OAB), T. Sbarrato\n(INAF-OAB), B. Sbarufatti (INAF-OAB), M.A. Williams (PSU) report on behalf of the\nSwift-XRT team:\n\nSwift-XRT has performed follow-up observations of the Einstein Probe/WXT-detected\nsource EP#01709320865, collecting 847 s of Photon Counting (PC) mode data between\nT0+15 ks and T0+16 ks after the trigger. We have detected 1 source.  This has been\nautomatically classified as an uncatalogued X-ray source.\n\nUncatalogued X-ray sources\n--------------------------\n\n  Source 1 (SWIFT J203008.6-125641):\n  ==================================\n    RA (J2000.0):   307.5359  =  20 30 08.62\n    Dec (J2000.0):  -12.9448  =  -12 56 41.3\n    Error:\t    6.2 (arcsec, radius, 90% confidence).\n    Detect flag:    GOOD\n    Distance:\t    52 arcsec from the Einstein Probe/WXT position.\n    Mean rate:\t    0.0156 [+0.0064, -0.0051] ct s^-1\n    Mean flux:\t    (6.0 [+2.4, -1.9])e-13 erg cm^-2 s^-1\n    Peak rate:\t    0.0156 [+0.0064, -0.0051] ct s^-1\n    Peak flux:\t    (6.0 [+2.4, -1.9])e-13 erg cm^-2 s^-1\n    ECF:\t    3.82e-11 erg cm^-2 ct^-1\n\t\t      assuming NH=4.73e+20 cm^-2, gamma=1.84\n\t\t      determined from a spectral fit.\n    RASS UL:\t    5.5e-02 ct s^-1 (converted to XRT; 0.3-10 keV)\n\t\t      so the source is not above this 3-sigma upper limit.\n    There is no evidence for fading.\n\nAll fluxes are 0.3-10 keV, observed. For all flux conversions and comparisons with\ncatalogues and upper limits  from other missions, we assumed a power-law spectrum\nwith NH=3x10^20 cm^-2 and photon index (Gamma)=1.7 unless otherwise stated.\n\nThe results of the XRT-team automatic analysis of the XRT observations, including a\nposition-specific upper limit calculator, are available at\nhttps://www.swift.ac.uk/EP/EP_FIELD00091.\n\nThis circular is an official product of the Swift-XRT team.\n\n\n",
  "eventId": "EP261003a",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "format": "text/plain"
}