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| Tues, May 28 | Wed, May 29 | Thurs, May 30 | Fri, May 31 | Sat, June 1 | |
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| 8:00 | Breakfast | Breakfast | Breakfast | Breakfast | Breakfast |
| 9:00 | Welcome and Introductions - Liz | Astroparticle Radiation and Acceleration I - Damiano Caprioli | Astroparticle Radiation and Acceleration II - Damiano | Astroparticle Radiation and Acceleration III - Damiano | Stats Lecture 5 - Cole |
| 10:00 | Intro to Fermi - Liz Fermi Survey Strategy - Joe Eggen | Intro to Fermi LAT - Liz | Neutron Stars Part 2 - Cecilia | ||
| 11:00 | Break | Break | Break | Break (Photo!) | Break |
| 11:30 | Stats Lecture 1 - Cole Miller | Neutron Stars - Cecilia Chirenti | Intro to Fermi GBM - Colleen Wilson-Hodge (remote) | Student Talks / 1 Slide Summaries | X-ray and Gamma-ray observations of pulsar wind nebulae - Jordan Eagle |
| 12:30 | Lunch | Lunch | Lunch | Lunch | Lunch |
| 1:30 | Getting started with Fermi: Tools and Resources - Joe Eggen, Joe Asercion, Alex Reustle, Sheimy, Paz, Nestor Mirabal (remote), Don Horner (remote) | Stats Lecture 2 - Cole Getting Started with Likelihood Analysis - Liz, Joe fermi-summer-school Github repository - See README file for instructions to download data and precomputed files for the 3C279 example analysis. 3C279 Example Analysis Likelihood Notebook Look here for a few project Ideas | Stats Lecture 3 - Cole Intro to the LAT Photon Data Catalog - Sheimy Paz LAT Instrument Response and Next Steps with Likelihood - Liz | Stats Lecture 4 - Cole Extended sources (3C 279 intro, W51C) - Liz, Jordan | Making LAT Spectra and lightcurves |
| 4:45 | End of the Day Tag-up | End of the Day Tag-up | End of the Day Tag-up | End of the Day Tag-up | End of the Day Tag-up |
| Bike rental pick-up - leave by 4:30 |
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| Mon, June 3 | Tues, June 4 | Wed, June 5 | Thurs, June 6 | Fri, June 7 | |
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| 8:00 | Breakfast | Breakfast | Breakfast | Breakfast | Breakfast |
| 9:00 | Active Galactic Nuclei - Qi Feng | Polarization - Haocheng Zhang | Magnetars - Oliver | 9:00 -9:30 Pack up. Feedback Form | |
| 10:00 | The High-energy Universe with Fermi-GBM - Oliver Roberts | Student Talks / 1 Slide Summaries | Gamma-ray Binaries - Jamie | ||
| 11:00 | Break | Break | Break | Break | Break |
| 11:30 | The Transient Gamma-ray Sky seen by Fermi-LAT - Niccolò Di Lalla | Rubin LSST - Federica Bianco | Student Talks / 1 Slide Summaries | Complete packing up and return bikes. | |
| 12:30 | Lunch | Lunch | Lunch | Lunch | Lunch |
| 1:30 | Burst analysis workshop - Niccolò Di Lalla: Analysis notebooks: | Free Afternoon | Time-based analysis topics LAT Light Curve Repository (unbinned likelihood) Lightcurve tool in fermipy example (binned likelihood) | Checking results, errors and next steps. | |
| 4:45 | End of the Day Tag-up | End of the Day Tag-up | End of the Day Tag-up | ||
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| Abstract: Star-forming regions (SFRs) are known sites of particle acceleration and may potentially be important sources of gamma-rays in the Galaxy. While a few Galactic SFRs have been associated with gamma-ray sources, the majority lack detections. Using all available Fermi data in combination with improved optical measurements, we are performing a systematic study of Galactic SFRs. The goal of our systematic study is to characterize the morphology and spectral emission of Galactic SFRs, and understand their energetics and particle acceleration processes. In this talk I will discuss the preliminary results of this project focusing on the connection of SFRs’ emission and their physical properties. |
Pranab Deka - "Exponential Methods for Anisotropic Diffusion"
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| Abstract: Anisotropic diffusion is imperative in understanding cosmic ray diffusion across the Galaxy, the heliosphere, and the interplay of cosmic rays with the Galactic magnetic field. The diffusion term contributes to the highly-stiff nature of the cosmic ray transport equation. In order to conduct numerical simulations of time-dependent cosmic ray transport, the implicit Crank-Nicolson integrator has been traditionally favoured over the CFL-bound explicit integrators to be able to take large time-step sizes. We propose exponential methods that directly compute the exponential of the underlying matrix (or the exponential-like functions) to treat the linear anisotropic diffusion equation. We consider time-dependent sources to emulate cosmic rays being ejected into the Galaxy at different points in time. We compare and contrast the performance of two second-order and one fourth-order exponential quadrature methods with that of Crank-Nicolson. The exponential methods allow us to take substantially large time-step sizes, thereby reducing the computational cost by almost an order of magnitude. The accuracy of the second-order exponential methods is similar to that of Crank-Nicolson (as one would expect) whilst the fourth-order solver yields highly accurate solutions. The boost in the performance offered by the exponential methods without compromising the accuracy of the solutions makes them an excellent alternative to the traditional methods for treating the time-dependent cosmic ray transport equation. |
Zachary Metzler - "Opportunities for Multimessenger Observations of Millisecond Pulsars"
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| Abstract: The first gravitational wave was detected by LIGO in 2015, and since that time over 100 events have been detected. However, these detections have been transient signals from binary mergers of black holes and neutron stars. In addition to transient, LIGO is sensitive to continuous gravitational waves. Millisecond pulsars are strong candidates for continuous gravitational waves, since the accretion from a nearby star can sustain spins >500 Hz and the accreting matter provides an inherent ellipticity. I will discuss the relationship between ellipticity, accretion rate, and gamma ray emission as well as discuss prospects for directly measuring these in the near future. |
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| Abstract: EIRSAT-1 is Ireland’s first satellite, it was developed by students in University College Dublin as a part of ESAs Fly your Satellite program. On December 1st 2023 EIRSAT-1 was launched into a Sun Synchronous Orbit from Vandenberg Space Base on a Space-X Falcon 9. It is a 2U CubeSat equipped with three payloads, one of which is GMOD; a gamma ray detecting module. GMOD uses a CeBr3 scintillator which produces flashes of light in the visible range when struck by gamma ray photons. The scintillations are measured with silicone photomultipliers (SiPMs) and read using an application specific integrated circuit (ASIC) known as SIPHRA. EIRSAT-1 is performing well in orbit and will soon be producing scientific data. This presentation will give an overview of the satellite subsystems with particular focus on the gamma ray detection module. The challenges faced in the lead up to launch and in the early operations phase will be presented. The results of the first few months of gamma ray detection with EIRSAT-1 will be discussed. Finally, the advantages and disadvantages of gamma ray detection with CubeSats will be presented using EIRSAT-1 as an example. |
Marianna Dafčíková - "The First GRBAlpha and VZLUSAT-2 catalogue: gamma-ray transients and detector sensitivity"
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| Abstract: In recent years there have been numerous efforts to build a constellation of small satellites which would provide an all-sky coverage and quick localization of gamma-ray bursts (GRBs). One of the mission proposals is the CAMELOT constellation with a newly developed gamma-ray detector composed of a CsI(Tl) scintillator coupled with silicon photomultipliers (SiPMs). The prototype of this detector is already employed in two space missions, GRBAlpha 1U CubeSat launched in March 2021 and VZLUSAT-2 3U CubeSat launched in January 2022. To date, the satellites have detected over 150 gamma-ray transients. In this presentation, I will show the first catalogue of the transients detected by these two missions and present the empirical sensitivity of the detector. The weakest GRB detection belongs to the faintest 10% of those observed by Fermi/GBM which demonstrates the detector potential for routine observation of GRBs. |
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Paolo Cristarella Orestano - "Study of Periodicity in Blazar Light Curves" - Periodicity_PCO.pdf
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| Abstract: Long term periodicity in gamma-ray Blazar light curves could be linked to the innermost zone of the complex structure of AGN, like possible presence of binary system of supermassive black holes, or it could shed light on the origin of gamma-rays emission. The work analyses 1525 sources, whose 14 years light curves come from the Fermi LAT Light Curve Repository (LCR), making use of Lomb-Scargle Periodogram (LSP) and wavelet weighted Z transform (WWZ), to express the significance we performed simulations using the Emmanoulopoulos algorithm. All the available possibilities for the light curves in the LCR, such as different temporal samplings and the use of photon flux and energy flux, are taken into account in order to ensure more reliable results. We found out high significance periodicity in less than 1% of the sources considered, and in few other sources hints of possible periodicity. Our results are compliant with the findings of recent literature focused on searches of periodic modulation in AGNs. |
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| Abstract: Gamma-ray bursts (GRBs) are energetic phenomena that serve as probes for extreme physics, but their emission mechanisms, jet geometry, and magnetic field structure are not well understood and require new detection capabilities. The Compton Spectrometer and Imager (COSI) is a gamma-ray space telescope set to launch in 2027 that aims to further our understanding of GRBs, in addition to studying positron annihilation and nucleosynthesis in the Galaxy. COSI’s wide field-of-view, excellent energy resolution, sub-degree localizations, and polarization capabilities may reveal insight into GRB prompt emission. In this presentation, I will give a brief overview of the COSI mission and discuss the GRB science it enables. |
Cuán de Barra - "GIFTS (Gamma-Ray Investigation of the Full Transient Sky)"
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| Abstract: Gravitational waves were detected in 2015 for the first time. In 2017, gravitational waves from a binary neutron star merger were detected in coincidence with a gamma-ray burst (GRB) confirming that some short events are produced by mergers. The multi-messenger astrophysics era began, and the discovery highlighted the importance of space missions to detect and localise bursts at a time when gravitational wave systems are becoming more sensitive to merger events. Currently there is a lack of large future gamma-ray missions to enable similar measurements and scientific discovery. Consequently we propose to build Gamma-ray Investigation of the Full Transient Sky (GIFTS), a novel 6U CubeSat, which has been designed, prototyped and demonstrated previous work by the PI. The proposed design is based on detailed in-house instrument development and on the gamma-ray detector in the 2U CubeSat EIRSAT-1 which launched in 2023. GIFTS will comprise six gamma-ray detectors and will detect and localise 70 GRBs per year including 11 short GRBs. Detailed design and simulations demonstrate it will detect up to 2 GRBs per year coincident with GW detections. We will build and prepare GIFTS for operation when GW detectors reach peak sensitivity. |
Zoe Brisson-Tsavoussis - 1-slide
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IceCube: Gen2 Prototype, Southern Sky eHBLs
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Group Photos
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