diffuse emission ()01/Oct/09

1) 2) 3) 4) 5) 6) g , . . .7) 8) open questions from source2-ry products(diff. compo.)

1) . . . . . . . . . . X LHC1

= (4p /c) E [dI/dE] dE = dI/dE cm-2 sec-1 sr -1 GeV-1 1 eV/cm31 eV/cm3 p r2 h dddisk 1055 erg 1055 erg/107y 3 1040 erg/secSN 1051~ 52 erg/30y 1041~ 42 erg/sec

2)

SSSS r-

SSSSSS[ H2 + HI ] r-

::

with

SS r-

Leaky-Box modelGas density : uniformCR density : uniformCR source : uniform but valid only for stable CRs !!! (not valid for isotope, g, X, radio)well mixed in Galaxy(no anisotropy in CR s)

Ginzburg-Ptuskin modelhalodiskhaloSS20 30kpc(Diffusion-halo model )

3) s (E0, E)

CRCR- H = Huni + Hran< H > = < Huni >< Hran > = 0 vM 20km/s4)

random walk:[cm-3sec-1GeV-1]

E withi

energy loss of electrons in ISM withbremsstrahlungionization constantin the case of charged CRs (but g-rays)free parameter

SS[ H2 + HI ] r-

energy loss of electrons in ISRF with

in the case of electrons (but g-rays & radios)

comparison between with and without approx.

comparison between with and without approx.

vM 20km/svM k -2+aenergy gain

total energy-loss of electrons in ISM and ISRF ISMISRF

5) source :diffusion :

perturbative termsforinterstellar environment(for HE)

6) g, radio, . . . emissivity of secondary products at r :(e, p, He ,)

Intensity for -ray (radio) components :g;

emissivity of es, s, ps from cosmological origin _

electron flux at SS emissivity at rastronomical origin and/or cosmological one Green function for (survival probability)

g -ray flux at SS

[7-1] CR-hadronic componentsor(average path length at SS)(reacceleration efficiency)key parameters for CRs:7) (disk-to-halo ratio)

2.6-2.8Energy spectra for 1-ry components

secondary-to-primary ratio

Galactic plane : halo thickness: isotope spread , normalized to radio-nuclide abundance ratios note 15-20% uncertainty in s-frag.

antiproton-to-proton ratio

Summary for CR hadronic components :

[7-2] electron components

hadron-induced electron-induced[7-3] diffusive g -ray componentnote !!! n(r) e (r) __,,,

estimation of the extragalactic-gsEG-g(EGRET)

Boer, W. 2005 CERN COURIER45, 17

Summary and open questions1) Diffusion + reacceleration with b = 2.7-2.8 and a = 1/3 => consistent with CRs & electrons (< 100 GeV) data2) EGRET data on (Eg , l, b-dist) are in harmony with CRs & electrons data, both in shape and absolute value for 30MeV < Eg < 1GeV3) FERMI-LAT data on Eg -spectrum are in harmony with CRs & electrons data, both in shape and absolute value for 0.2GeV < Eg < 10GeV4) Electron spectrum in 0.1-1TeV => new components ? new results from PAMELA, AMS, BESS are requiredradio, TeV-g electron anomalycontradiction among PPB/BETS-ATIC, FERMI, EC need further studies for cross-checks each other !!!

[7-2] electron components

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