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J/A+A/458/245
936
Obs. of 2 Unidentified Gamma-ray Sources (La Palombara+, 2006)
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2006A&A...458..245L
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1.
J/A+A/458/245/table7
Main characteristics of the X-ray sources with no candidate optical counterpart and log(FX/Fopt)≳2 (
chart
)
(9 rows)
meta
J/A+A/458/245/table7
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Constraint
Explain
(
UCD
)
recno
Record number assigned by the VizieR team. Should Not be used for identification.
(
meta.record
)
(
RECORD
)
Obs
EPIC field sequential reference number
(
meta.id;obs.field
)
(
ID_NUMBER
)
XMMU
(char)
XMMU designation (JHHMMSS.s+DDMMSS)
(
meta.id;meta.main
)
(
ID_MAIN
)
Bands
(char)
Detection bands
(
instr.bandpass
)
(
INST_BAND_PASS
)
l_kTbt
(char)
[<≥ ] Limit flag on kTbt
(
meta.code.error
)
(
CODE_LIMIT
)
kTbt
keV
Range of possible kT temperature for thermal bremsstrahlung spectrum
(
phys.temperature
)
(
PHYS_TEMP_MISC
)
kTbt2
keV
(n)
Range of possible kT temperature for thermal bremsstrahlung spectrum
(
phys.temperature
)
(
PHYS_TEMP_MISC
)
l_kTbb
(char)
[<≥ ] Limit flag on kTbb
(
meta.code.error
)
(
CODE_LIMIT
)
kTbb
keV
Range of possible kT temperature for thermal blackbody spectrum
(
phys.temperature
)
(
PHYS_TEMP_MISC
)
kTbb2
keV
(n)
Range of possible kT temperature for thermal blackbody spectrum
(
phys.temperature
)
(
PHYS_TEMP_MISC
)
l_Gamma
(char)
[<≥ ] Limit flag on Gamma
(
meta.code.error
)
(
CODE_LIMIT
)
Gamma
keV
Range of photon index for a power law spectrum
(
meta.code;spect.index
)
(
SPECT_SP-INDEX
)
Gamma2
keV
(n)
Range of photon index for a power law spectrum
(
spect.index
)
(
SPECT_SP-INDEX
)
Flux
10-17W/m2
Source flux in 0.3-10keV energy range
(
phot.flux;em.X-ray
)
(
PHOT_FLUX_X
)
e_Flux
10-17W/m2
rms uncertainty on Flux
(
stat.error;phot.flux
)
(
ERROR
)
log(FX/Fopt)
[-]
Lower limit of X-ray-to-optical flux ratio
(
phot.flux;arith.ratio
)
(
PHOT_FLUX_RATIO
)
e_log(FX/Fopt)
[-]
rms uncertainty on log(FX/Fopt)
(
stat.error
)
(
ERROR
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
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