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Search for cosmic rays from gamma ray bursts

Marcin Molak

Faculty of PhysicsWarsaw University of Technology

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Plan of presentation:

• UHE and EHE Cosmic Rays• Origin of UHE Cosmic Rays:

– Astrophysical Sources (bottom-up mechanisms)

– Top-down scenarios• Methods of CR Detection• Roland Mazé Project description• MazePi system• Plans for future…

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UHE and EHE Cosmic Rays

• Ultra High Energy Cosmic Rays – CR with energy ≥ 1018 eV

• Extremely High Energy Cosmic Rays - CR with energy ≥ 1020 eV

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Possible origin of UHE Cosmic Rays

• Astrophysical Sources (acceleration scenarios):– Pulsars and magnetars – neutron stars with

surface magnetic field up to 1015 Gauss (acceleration of charged nuclei up to 1015 eV)

– Active Galactic Nuclei and Radio Galaxes (extragalactic sources) -> photo-pion production (up to 1018eV) and acceleration in hot-spots of Fanarotf-Riley II galaxies (up to 1021 eV, no adiabatic deceleration problem)

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Possible origin of UHE Cosmic Rays

• Astrophysical Sources– Quiet Black Holes – up to 1020 eV for mass of

109 MΘ.

– Colliding Galaxies and Cluster of Galacties

– Gamma Ray Burst• Top-down scenario

– Very massive X particles decay into EHE CS• Hybrids Models

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- Lorentz factor of shock matterZ – charged of the nucleusB – magnetic field valueR – linear dimension of object

Possible origin of UHE Cosmic rays

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Methods of CR Detection

• Direct measurements (spacecraft or satellite), ex.: Energetic Gamma ray Experiment Telescope (EGRET)

• Scintillation detectors in ground arrays for UHECR extensive ray showers (EAS), ex.: Akeno Giant Air Shower Array (AGASA)

• Water-Cherenkov detector, ex.: Multi-Institution Los Alamos Gamma Ray Observatory (MILAGRO)

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Roland Maze Project

• Detection points would being placed on the roofs of Lódź schools.

• Each of station will be equipped with:– 4 scintillation counters

(1m2 area, 10m distance separation) with ADC

– GPS Motorola M12+ Timing with antenna

– PC-class computer

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MazePi DB

MazePi System

Station 1

Station i

MazeIPJ Łódź

Main Server

SOAPClients

MazePi Server

SOAPWeb

Services

DB Trigger

TriggerBroadcast

System

Pi Server

Pi DB

PiMan

SOAPClients

…

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Plans for future…

• Develop SOAP web services• Prepare database triggers and broadcast

system• Construct and mount detectors on all high

school• Check Gamma Ray Burst and cosmic ray

coincidence (full spectrum)