γ ray selected AGN (Blazars) · 5BZB J1427+2348: an example of Blazar in 2FHL and in the 2WHSP...
Transcript of γ ray selected AGN (Blazars) · 5BZB J1427+2348: an example of Blazar in 2FHL and in the 2WHSP...
γ-ray selected AGN (Blazars)
AGN:Twomaincategories1. Dominatedby(mostly)thermalemissionfromaccre7on
disk- RadioquietAGN(>~90%)(normalQSOpoweredbyaccreBonontoaSMblackhole)
1. DominatedbyNon-Thermalradia7on–
JetdominatedAGN(<10%)
WhenΘ<θblazar
Blazar
AccreBonontoSMBH
AccreBonontoSMBH
AccreBonontoSMBH
100
MeV
- 10
0 G
eV –
HE
band
100
GeV
- 1
0 Te
V –
VHE
band
Currentlyopera=nginstruments/telescopescapableofdetec=ngcosmicΥ-raysourcesInspace:HEgamma-rays(Eγ>100MeV)AGILE(launchedinApril2007)Fermi(launchedinJune2008)AMS-2(launchedinMay2011–experimentontheISS)DAMPE(launchedinDecember2015)Ontheground:VHEgamma-rays(Eγ>50/100GeV)IACTS(HESS,MAGIC,VERITAS->CTA),SmallFieldofView,goodsensiBvityWaterCherenkov/Airshower(HAWK,ARGO,->LHAASO.)LargeFOV,largeintegraBonBmes
1451 srcs 43% unassoc.
1873 35% unassoc.
3033 33% unassoc.
Fermi 3FGL catalog: Acero et al. 2015 ApJS 218,23 arXiv:1501.02003
4 years of PASS 7 data: 3033 sources
~98%oftheAGNareblazars
Fermi 3rd AGN catalog (3LAC) : Ackermann et al. 2015, ApJ 810, 14, arXiv:1501.06054
415FSRQs 657BLLacs 402blazarsofunknowntype
1773sourceswithTS>251444in“cleansample”
X-ray:BlazarsinRASScr>0.05(BZCAT,Massaro,E.etal.2015)
−2.5 −2 −1.5 −1 −0.5 0 0.5 1 1.5 2 2.5
−10
1
μ-waves:PlanckERCSCBlazars
−2.5 −2 −1.5 −1 −0.5 0 0.5 1 1.5 2 2.5
−10
1
VHEband:Fermi2FHL(E>50GeV)
γ-ray:Fermi-LAT4yrBlazarCatalog(Ackermannetal.2015)
3C 454.3
3C 454.3
100
MeV
- 10
0 G
eV b
and
3C 454.3
100
MeV
- 10
0 G
eV b
and
100
GeV
- 1
0 Te
V ba
nd
factor1
04!LBLobject,HEemiier,withsteepspectrun
Mrk 501
HBLobject,HE+VHEemiier,withhardHEspectrun
PKS 2155-304
Aharonianetal2007
2015,MNRAS450,2404arXiv:1504.01978
2015,ApJL800L,27,arXiv:1501.050301
Summary of γ-ray detections (TS > 25) in 27 month Fermi-LAT data.
Summary of γ-ray detections (TS > 25) in 27 month Fermi-LAT data.
Arsiolietal.2016,inpreparaBon) PRELIMINARY
PRELIMINARY
PRELIMINARY
Outof104Radiobrightestnorthernsources:• 83havecounterpartsfromFGLcatalogs(allTS>25)
• 6newdetecBonswithTS>25
• 4newdetecBonswithTSinbetween10to25
• 2newassociaBonwith3FGL(frombeierposiBoningwhenusingTSmaps)
• 2newdetecBonsfromsolvingsourceconfusion
• 3transients(onlydetectableduringshortflareepisodes,confirmedwithTSmaps,TS~10-15alongonemonth,orfewmonths)
So,outofthe104sources,only4casescanbeconsideredasnon-detecBonsingamma-rays
PRELIMINARY
2015,ApJL800L,27,arXiv:1501.050301
The Very High Energy (VHE)
(E > 50 GeV)
Υ-ray sky
New large samples of high-energy synchrotron
peaked blazars
-The most energetic particle accelerators known and likely VHE emitters -
νpeak>1015Hz
VHE-
TeV
band
νpeakF(νpeak)
FOM=νpeakF(νpeak)/5.x10-12
A&A2015,A&A,2015,579,34DOI:10.1051/0004-6361/201424148
30
+90o
−90o
−60o
−30o
+0o
+30o
+60o
180o180o 0o30o60o90o120o150o 210o240o270o300o330o
2WHSP~1,700 objects Y-L.Chang,B.Arsioli,P.Giommi,P.Padovani,2016inpreparaBon
TalkbyY-L.Chang
The VHE sky (IACTs) F > ~ 10 mC.U.
+90o
−90o
−60o
−30o
+0o
+30o
+60o
180o180o 0o30o60o90o120o150o 210o240o270o300o330o
The VHE sky (IACTs+Fermi 2FHL) F > ~ 10 mC.U. F > ~ 10 mC.U.
+90o
−90o
−60o
−30o
+0o
+30o
+60o
180o180o 0o30o60o90o120o150o 210o240o270o300o330o
−11.5 −11 −10.5 −10 −9.5
00.1
0.2
0.3
frequency
Log(ebl−deabsorbedF>50GeV/fom)
2WHSP - Fermi 2FHL Common sources
15 15.5 16 16.5 17 17.5 18 18.5
−11.5
−11
−10.5
−10
Log(ebl−deabsorbedF >
50GeV/fom)
Log(νpeak)
Factorof2frombestfit
PRELIMINARY
Flux(E>50GeV)ebl-deabsorbed=2.x1011*Sync_peak_flux*10(-0.154*log(nu_peak)-8.03)
PRELIMINARY
The VHE sky (IACTs+Fermi 2FHL+2WHSP bright)
PRELIMINARY +90o
−90o
−60o
−30o
+0o
+30o
+60o
180o180o 0o30o60o90o120o150o 210o240o270o300o330o
F > ~ 10 mC.U F > ~ 10 mC.U. F > ~ 10 mC.U
10 15 20 25−16
−14
−12
−10
Log νf
(ν)[e
rg c
m−2
s−1 ]
Log frequency ν [Hz]10 15 20 25−1
6−1
4−1
2−1
0
Log νf
(ν)[e
rg c
m−2
s−1 ]
Log frequency ν [Hz]
5BZBJ1427+2348:anexampleofBlazarin2FHLandinthe2WHSPsample
10 15 20 25−16
−14
−12
−10
Log νf
(ν)[e
rg c
m−2
s−1 ]
Log frequency ν [Hz]10 15 20 25−1
6−1
4−1
2−1
0
Log νf
(ν)[e
rg c
m−2
s−1 ]
Log frequency ν [Hz]
5BZUJ0221+3556:anexampleofBlazarin2FHLbutnotinthe2WHSPsample
About 1/3 of the Fermi 2FHL blazars have νpeak < 1015Hz
(not in 2WHSP)
The VHE sky (IACTs+Fermi 2FHL+2WHSP bright)
PRELIMINARY +90o
−90o
−60o
−30o
+0o
+30o
+60o
180o180o 0o30o60o90o120o150o 210o240o270o300o330o
F > ~ 10 mC.U F > ~ 10 mC.U. F > ~ 10 mC.U
The VHE sky (IACTs+Fermi 2FHL+2WHSP bright + faint)
PRELIMINARY +90o
−90o
−60o
−30o
+0o
+30o
+60o
180o180o 0o30o60o90o120o150o 210o240o270o300o330o
F > ~ 1 mC.U ~ CTA sensitvity
Open Universe
Paolo Giommi Italian Space Agency
Anini=a=veundertheauspicesofCOPUOSannouncedbytheASIpresidentanddescribedinaconferenceroompaperpresentedbyItaly
forexpandingavailabilityofandaccessibilitytoopensourcespacesciencedata
ApprovedbythegeneralassemblyofCOPUOSatits59thsession(June2016)
42Vienna,10/06/2016 CommiieeonthePeacefulUsesofOuterSpace59thsession