Detection of AGN with the MAGIC Telescope

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Detection of AGN with the MAGIC Telescope

• The VHE Sky
• VHE Blazar spectrum
• Observation prospects

• Roger Firpo (IFAE)
• 14th International School of Cosmic Ray
  Astrophysics, Erice 04

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The VHE Sky

• 3rd EGRET catalog
• (20 MeV 30 GeV)
• 271 sources
• 67 AGN (Blazars)
• 168 unidentified
• Cherenkov Telescopes
• (500 GeV 10TeV)
• 18 sources
• 8 blazars, only 4 also in 3rd EGRET catalog

• MAGIC (30 GeV 50 TeV)

TeV Sky
Roger Firpo, ISCRA 2004
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The VHE Blazar spectrum

• The Spectral Energy Distribution (SED)
• Two bumps
• Synchrotron IC
• Flaring (high flux) states
• Sub-day scale variability
• In small E range powerlaw spectrum
• dN/dEk(E/Ec)-?
• ? photon index
• 1.57 gt ? gt 3.45

EGRET
IACTs
Roger Firpo, ISCRA 2004
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Blazar observation prospects

• Naively Extrapolating EGRET spectra
• Powerlaw IC peaks EBL absorption
• Observation time to have a 5s detection lt 50hr
• Ethr 30 GeV
• Flux sensitivity down to 10-11 ph cm-2 s-1

3C 273 Z 0.158 F(Egt0.1) 15.410-8 ? 2.58

• 28 Blazars (9 BL Lacs 19 FSRQs) are expected to
  be detected with a significance of 5s in less
  than 50h
• Also well use X-Ray satellite data to catch
  flaring AGN

MAGIC
Simple Power law
EGRET
Simple Power law IRB
MeV GeV
TeV
Roger Firpo, ISCRA 2004
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MAGIC AGN Candidates
  Source Name Z FPIRB5GeV(ph cm-2 s-1) TPLIRB5GeV (h)
Mrk 421 3EG_J11043809 0.031 8.55E-11 3.2
OD160 3EG_J02371635 0.94 6.41E-11 4.3
3C 279 3EG_J1255-0549 0.538 6.07E-11 4.6
W Comae 3EG_J12222841 0.102 6.03E-11 4.6
CTA026 3EG_J0340-0201 0.852 1.67E-11 23.8
4C29.45 3EG_J12002847 0.729 2.23E-11 27.5
Source Name Z FPIRB (ph cm-2 s-1) TPLIRB (h)
3C 66A 3EG_J02224253 0.444 3.43E-10 0.8
3c454.3 3EG_J22541601 0.859 2.53E-10 1.1
OJ287 3EG_J08531941 0.306 1.58E-10 1.8
4C15.54 3EG_J16051553 0.357 1.55E-10 1.8
4C38.41 3EG_J16353813 1.814 8.96E-11 3.1
  3EG_J12242118 0.435 6.95E-11 4.0
4C15.05 3EG_J02041458 0.405 6.49E-11 4.3
  3EG_J23592041 1.066 5.70E-11 4.9
  3EG_J09586533 0.368 4.80E-11 5.8
  3EG_J09525501 0.901 4.16E-11 6.7
NRAO530 3EG_J1733-1313 0.902 2.48E-11 11.2
  3EG_J04501105 1.207 2.54E-11 16.7
  3EG_J1512-0849 0.361 1.56E-11 18.5
  3EG_J08280508 0.18 1.96E-11 23.4
NRAO190 3EG_J0442-0033 0.844 1.65E-11 25.9
PKS 2155-304 3EG_J2158-3023 0.116 9.33E-12 29.8
3C 273 3EG-J12290210 0.158 1.55E-11 33.3
  3EG_J05301323 2.06 1.83E-11 34.3
  3EG_J16143424 1.401 1.95E-11 34.8
CTA102 3EG_J22321147 1.037 1.74E-11 36.3
  3EG_J0422-0102 0.915 1.19E-11 48.9
Roger Firpo, ISCRA 2004
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SUMMARY

• The AGN are a primary target for MAGIC
• We extrapolated EGRET data to predict the
  observation time for these sources
• We expect to observe at least 28 AGN with MAGIC

Roger Firpo, ISCRA 2004