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Analysis of Local Interstellar Emission from 100 MeV to 1 GeV with CO and HI Maps

This study examines local interstellar emission in the energy range of 100 MeV to 1 GeV over a six-day observation period, focusing on regions defined by 0.2° x 0.2° angular resolution and galactic latitudes |b| between 5° and 30°. Using CO and HI maps, the research presents fit results for various emission sources, including measured values of qHI, qH2, and Ibkg. It discusses the implications of source biases and potential exotic halo contributions. Gaussian fits for source profiles are also provided, exploring longitude and latitude dependencies.

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Analysis of Local Interstellar Emission from 100 MeV to 1 GeV with CO and HI Maps

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  1. Local interstellar emission • 100 MeV – 1 GeV, 6 days, 0.2°x0.2° • 5° ≤ |b| ≤ 30°

  2. CO maps

  3. HI maps

  4. GLAST 0.1-1 GeV

  5. interstellar fit with all sources • qHI = (2.59 ± 0.03) 10-26 at-1 sr-1(high)asuming 7300 cm² • qH2 = (4.6 ± 0.3) 10-6 sr-1cm-2 K-1 km-1 • Ibkg = (1.94 ± 0.03) 10-5 cm-2 s-1 sr-1 • X = (0.9 ± 0.1) 1020mol. cm-2 K-1 km-1 s

  6. interstellar fit removing sources • qHI = (2.52 ± 0.03) 10-26 at-1 sr-1asuming 7300 cm² • qH2 = (4.6 ± 0.3) 10-6 sr-1cm-2 K-1 km-1 • Ibkg = (1.91 ± 0.03) 10-5 cm-2 s-1 sr-1 • X = (0.9 ± 0.1) 1020mol. cm-2 K-1 km-1 s • source bias << • not true at |b|<5° ! • IC or exotic halo?

  7. source profiles • gaussian fits to longitude and latitude profiles

  8. source profiles

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