Tenth International Fermi Symposium

Session

Parallel 8

12 Oct 2022, 14:15

Conveners

Parallel 8: Solar

• Nicola Omodei (Stanford University)

94. Fermi LAT observation of the Moon

Francesco Loparco (Universita e INFN, Bari (IT))

12/10/2022, 14:15

Contributed Talk

We have reconstructed the gamma-ray flux from the Moon in the energy range from 30 MeV up to a few GeV using a 14-years dataset collected by the Fermi Large Area Telescope since its launch in 2008. Gamma rays from the Moon are originated in the interactions of cosmic-ray nuclei with the regolith of the lunar surface and their flux is sensitive to solar activity, which modulates the charged...

83. Study of gamma rays from the Small Solar System Bodies with the Fermi-LAT data

Mr Salvatore De Gaetano (INFN sezione di Bari, Università degli Studi di Bari "Aldo Moro")

12/10/2022, 14:30

Contributed Talk

All known small Solar System bodies have a diameter between 1 m and a few thousands of km. Based on the collisional evolution of Solar System bodies, a model predicting the existence of a larger number of asteroids with diameters down to 10 m has been suggested. In this work, we propose an extension of this model to diameters of a few cm. Like all Solar System bodies, asteroids can be passive...

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12/10/2022, 14:45

95. Investigation of Coronal Mass Ejection Driven Shock in Relation to the Fermi-LAT Long-Duration Solar Flares using Data-driven Global MHD Simulations

Meng Jin

12/10/2022, 15:00

Contributed Talk

The increasing number of long-duration gamma-ray solar flares >100 MeV observed by Fermi/LAT poses a puzzle on the particle acceleration and transport mechanisms. Since most of the long-duration events are associated with fast coronal mass ejections (CMEs), it is therefore intriguing to understand the role of CMEs and CME-driven shocks in these events. In this study, we perform data-driven,...

96. Cosmic Ray Electron Transport and Radiation in the Inner Heliosphere and X-ray and Gamma-ray Observations of the Quiet Sun

Vahe' Petrosian (Stanford University)

12/10/2022, 15:15

Contributed Talk

Fermi routinely observes gamma-rays from the quiet Sun (QS), i.e. when there is no flaring activity, and there are upper limits in X-ray regime from RHESSI. The gamma-rays are produced by Cosmic Ray (CR) protons (via pion production) and electrons via inverse Compton (IC) scattering of solar optical photons. This problem has received considerable attention. A possible source of the X-rays...

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