J/ApJS/208/25ivo://CDS.VizieR/J/ApJS/208/25doi:10.26093/cds/vizier.22080025CDSTakeuchi Y.Kataoka J.Maeda K.Takahashi Y.Nakamori T.Tahara M.2018-05-29T06:26:18Z2015-02-25T08:40:44ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frx-ray-sourcesgamma-ray-astronomyactive-galactic-nucleivisible-astronomybroad-band-photometryultraviolet-photometryradio-sourcesWe have analyzed all the archival X-ray data of 134 unidentified (unID) gamma-ray sources listed in the first Fermi/LAT (1FGL) catalog and subsequently followed up by the Swift/XRT. We constructed the spectral energy distributions (SEDs) from radio to gamma-rays for each X-ray source detected, and tried to pick up unique objects that display anomalous spectral signatures. In these analyses, we target all the 1FGL unID sources, using updated data from the second Fermi/LAT (2FGL) catalog on the Large Area Telescope (LAT) position and spectra. We found several potentially interesting objects, particularly three sources, 1FGL J0022.2-1850, 1FGL J0038.0+1236, and 1FGL J0157.0-5259, which were then more deeply observed with Suzaku as a part of an AO-7 program in 2012. We successfully detected an X-ray counterpart for each source whose X-ray spectra were well fitted by a single power-law function. The positional coincidence with a bright radio counterpart (currently identified as an active galactic nucleus, AGN) in the 2FGL error circles suggests these sources are definitely the X-ray emission from the same AGN, but their SEDs show a wide variety of behavior. In particular, the SED of 1FGL J0038.0+1236 is not easily explained by conventional emission models of blazars. The source 1FGL J0022.2-1850 may be in a transition state between a low-frequency peaked and a high-frequency peaked BL Lac object, and 1FGL J0157.0-5259 could be a rare kind of extreme blazar.2013ApJS..208...25Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/208/25CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/207/4 : Unid. {gamma}-ray sources. III. Radio (Massaro+, 2013)J/ApJS/206/17 : New gamma-ray blazar candidates in the 3PBC (Maselli+, 2013)J/ApJS/206/13 : Blazars with {gamma}-ray counterparts. II. (Massaro+, 2013)J/ApJS/206/12 : Blazars with {gamma}-ray counterparts. I. (D'Abrusco+, 2013)J/A+A/551/A142 : 7 year Swift-XRT point source cat. (1SWXRT) (D'Elia+, 2013)J/ApJS/199/31 : Fermi LAT second source catalog (2FGL) (Nolan+, 2012)J/MNRAS/426/1750 : INTEGRAL/IBIS AGN catalogue (Malizia+, 2012)J/A+A/541/A160 : X & gamma-ray obs. of selected blazars (Giommi+, 2012)J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010)J/MNRAS/403/945 : Swift/XRT obs. of unidentified IBIS sources (Landi+, 2010)J/ApJ/709/1407 : SED of the Fermi blazars (Li+, 2010)J/ApJ/706/L7 : The Fermi LAT sky as seen by INTEGRAL/IBIS (Ubertini+, 2009)J/ApJ/681/113 : Swift BAT survey of AGNs (Tueller+, 2008)J/ApJ/678/102 : BAT X-ray survey. I. (Ajello+, 2008)J/A+A/458/245 : Obs. of 2 Unid. Gamma-ray Sources (La Palombara+, 2006)J/A+A/436/799 : X- & gamma-ray fluxes of {gamma}-ray-loud blazars (Fan+, 2005)J/A+A/379/755 : Radio data of X- and gamma-ray loud blazars (Venturi+, 2001)http://heasarc.nasa.gov/W3Browse/all/radio.html : W3Browse HEARSAC masterhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/208/25https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/208/25http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/208/25https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/208/25https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/208/25http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/208/25GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/208/25/table4 (*Swift/XRT results for 112 1FGL objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/208/25/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/208/25/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/208/25/table4?GETtext/xml+votable180.050000true0.3864-41.92270.0055555555555555566/189 1684 1685 2006 2028 2030 2754 2755 2808 2860 3441 4140 4542 4543 4865 5448 5450 8100 9417 10780 12179 12277 13729 13731 14857 15030 15917 15996 16534 16665 16816 17341 17343 18210 18343 18441 18444 18509 18520 18985 19037 19525 19535 19546 19589 19722 19723 20481 20735 21010 21164 21493 21804 21806 22187 22894 23105 24836 25140 25142 25386 25387 25468 25781 25820 26203 26254 26532 26539 27423 28101 28506 30086 30195 31116 31239 31362 31774 31899 32160 33198 33370 33457 33467 33528 33865 33898 34163 34437 34968 35074 35498 36144 36615 36770 38354 38511 38931 38937 39111 39464 39466 40352 40354 40703 40811 41220 42256 43194 43225 43227 43228 43596 43597 43632 43634 43905 43912 43913 44540 44582 45011 45970 46285 46370 46373 46564 46568 47154 47398 47404 47461 48025 485282.3191243101133513e-25 3.213643678408261e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/208/25?format=asciiX-rayGamma-rayOpticalUVRadiodefaultJ/ApJS/208/25/table4*Swift/XRT results for 112 1FGL objectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint1FGL1FGL source name (JHHMM.m+DDMM)meta.id.parentcharXRT[1/7] XRT source number within Namemeta.idintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainr90[3.5/8.3] Radius of 90% confidence error circlesarcsecstat.error;phys.angSizefloatCRate[0.1/81.6] Count rate in 0.3-10keV bandct/ksphot.count;em.X-raydoublee_CRate[0.4/21] Uncertainty in CRatect/ksstat.errordoubleS/N[3/47.1] Signal-to-Noise ratiostat.snrfloatSimbadSimbad column added by the CDSmeta.ref.urlcharFigFigure number in Figure 11 (G1)meta.id;meta.mainintJ/ApJS/208/25/table5All radio fluxes and Swift/UVOT fluxes plotted in SEDs (Figure 12)l_VflxLimit flag on Vflxmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint1FGL1FGL source name (JHHMM.m+DDMM)meta.id.parentcharNameName complement as in figure 12meta.id.part;meta.maincharl_F350Limit flag on F350meta.code.errorcharF350[0.3/20]? Radio 350MHz flux densitymJyphot.flux.density;em.radio.200-400MHzfloatnullablee_F350[0.001/0.1]? Uncertainty in F350mJystat.errorfloatnullablel_F843Limit flag on F843meta.code.errorcharF843[5/2820]? Radio 843MHz flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_F843[1/4]? Uncertainty in F843mJystat.errorfloatnullablel_F1.4Limit flag on F1.4meta.code.errorcharF1.4[0.02/952]? Radio 1.4GHz flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_F1.4[0.01/11]? Uncertainty in F1.4mJystat.errorfloatnullableF4.85[78]? Radio 4.85GHz flux densitymJyphot.flux.density;em.radio.3-6GHzfloatnullablee_F4.85[4/8]? Uncertainty in F4.85mJystat.errorfloatnullableVflx[0.28/84]? Swift/UVOT V band fluxfW.m**-2phot.flux.density;em.opt.Vfloatnullablee_Vflx[0.06/2]? Uncertainty in VflxfW.m**-2stat.errorfloatnullablel_BflxLimit flag on Bflxmeta.code.errorcharBflx[0.25/57.9]? Swift/UVOT B band fluxfW.m**-2phot.flux.density;em.opt.Bfloatnullablee_Bflx[0.04/1.1]? Uncertainty in BflxfW.m**-2stat.errorfloatnullablel_UflxLimit flag on Uflxmeta.code.errorcharUflx[0.02/193]? Swift/UVOT U band fluxfW.m**-2phot.flux.density;em.opt.Ufloatnullablee_Uflx[0.01/4]? Uncertainty in UflxfW.m**-2stat.errorfloatnullablel_W1flxLimit flag on W1flxmeta.code.errorcharW1flx[0.09/2615]? Swift/UVOT W1 band (lambda0=2600{AA}) fluxfW.m**-2phot.flux;em.UVdoublenullablee_W1flx[0.01/2550]? Uncertainty in W1flxfW.m**-2stat.errordoublenullablel_M2flxLimit flag on M2flxmeta.code.errorcharM2flx[0.046/4886]? Swift/UVOT M2 band (lambda0=2246{AA}) fluxfW.m**-2phot.flux;em.UVdoublenullablee_M2flx[0.006/4874]? Uncertainty in M2flxfW.m**-2stat.errordoublenullablel_W2flxLimit flag on W2flxmeta.code.errorcharW2flx[0.03/108]? Swift/UVOT W2 band (lambda0=1928{AA}) fluxfW.m**-2phot.flux;em.UVfloatnullablee_W2flx[0.01/2]? Uncertainty in W2flxfW.m**-2stat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharFigFigure number in Figure 11 (G1)meta.id;meta.mainintJ/ApJS/208/25/table6Swift/XRT X-Ray fluxes and 2FGL gamma-ray fluxes plotted in SEDs (Figure 12)l_F1-3GUpper limit on F1-3Gphot.flux.density;em.gamma.hardcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint1FGL1FGL source namephot.flux;em.X-raycharNameName complement as in Figure 12phot.flux;em.X-raycharF0.3-0.6k[0.7/1151]? Swift/XRT 0.32-0.64keV fluxaW.m**-2phot.flux.density;em.gamma.harddoublenullablee_F0.3-0.6k[0.2/386]? Uncertainty in F0.3-0.6kaW.m**-2phot.flux.density;em.gamma.harddoublenullableF0.6-1k[0.7/872]? Swift/XRT 0.64-1.28keV fluxaW.m**-2phot.flux.density;em.gamma.harddoublenullablee_F0.6-1k[0.6/157]? Uncertainty in F0.6-1kaW.m**-2phot.flux.density;em.gamma.harddoublenullableF1-2k[1.1/737]? Swift/XRT 1.28-2.56keV fluxaW.m**-2phot.flux.density;em.gamma.harddoublenullablee_F1-2k[0.7/117]? Uncertainty in F1-2kaW.m**-2phot.flux.density;em.gamma.harddoublenullableF2-5k[0.6/825]? Swift/XRT 2.56-5.12keV fluxaW.m**-2phot.flux.density;em.gamma.harddoublenullablee_F2-5k[1.3/201]? Uncertainty in F2-5kaW.m**-2phot.flux.density;em.gamma.harddoublenullableF5-10k[9.5/1510]? Swift/XRT 5.12-10.24keV fluxaW.m**-2phot.flux.density;em.gamma.harddoublenullablee_F5-10k[9.1/134]? Uncertainty in F5-10kaW.m**-2phot.flux.density;em.gamma.harddoublenullablel_UL0.5-8kUpper limit on UL0.5-8kphot.flux.density;em.gamma.hardcharUL0.5-8k[4.8/480]? Upper limit on Swift/XRT 0.5-8keV flux1e-17W.m**-2phot.flux.density;em.gamma.hardfloatnullablel_F0.1-0.3GUpper limit on F0.1-0.3Gphot.flux.density;em.gamma.hardcharF0.1-0.3G[0.8/13] 2FGL catalog 100-300 MeV fluxfW.m**-2phot.flux.density;em.gamma.hardfloate_F0.1-0.3G[0.6/2]? Uncertainty in F0.1-0.3GfW.m**-2phot.flux.density;em.gamma.hardfloatnullablel_F0.3-1GUpper limit on F0.3-1Gphot.flux.density;em.gamma.hardcharF0.3-1G[0.7/16] 2FGL catalog 0.3-1GeV fluxfW.m**-2phot.flux.density;em.gamma.hardfloate_F0.3-1G[0.3/1]? Uncertainty in F0.3-1GfW.m**-2phot.flux.density;em.gamma.hardfloatnullableF1-3G[0.7/15.2] 2FGL catalog 1-3GeV fluxfW.m**-2phot.flux.density;em.gamma.hardfloate_F1-3G[0.2/1]? Uncertainty in F1-3GfW.m**-2phot.flux.density;em.gamma.hardfloatnullablel_F3-10GUpper limit on F3-10Gphot.flux.density;em.gamma.hardcharF3-10G[0.5/8.8] 2FGL catalog 3-10GeV fluxfW.m**-2phot.flux.density;em.gamma.hardfloate_F3-10G[0.3/1.1]? Uncertainty in F3-10GfW.m**-2phot.flux.density;em.gamma.hardfloatnullablel_F10-100GUpper limit on F10-100Gphot.flux.density;em.gamma.hardcharF10-100G[0.6/5.2] 2FGL catalog 10-100GeV fluxfW.m**-2phot.flux.density;em.gamma.hardfloate_F10-100G[0.6/1.3]? Uncertainty in F10-100GfW.m**-2phot.flux.density;em.gamma.hardfloatnullableFGLDisplay the 1FGL data (Cat. J/ApJS/188/405)phot.flux.density;em.gamma.hardcharSimbadSimbad column added by the CDSphot.flux.density;em.gamma.hardcharNEDNED column added by the CDSphot.flux.density;em.gamma.hardcharFigFigure number in Figure 11 (G1)phot.flux.density;em.gamma.hardint