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Roger Blandford KIPAC Stanford. Exploring the Crab Nebula with the Hubble, Chandra and Fermi Space Telescopes. Anasazi Indians. Charles Messier. Sam Okoye discovers compact radio source. Franco Pacini predicts Crab Nebula Powered by Neutron Star . Jocelyn Bell Discovers Pulsars.

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Roger blandford kipac stanford

Roger Blandford

KIPAC

Stanford

Exploring the Crab Nebula with theHubble, Chandra and FermiSpace Telescopes

NASM


Anasazi indians
Anasazi Indians

NASM



Sam okoye discovers compact radio source
Sam Okoye discovers compact radio source

NASM


Franco pacini predicts crab nebula powered by neutron star
Franco Pacini predictsCrab Nebula Powered by Neutron Star

NASM



John bahcall 1934 2005
John Bahcall (1934-2005)

Astrophysicist

Astronomical Leader

Mentor to Young Scientists

Champion of Hubble Space Telescope

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VERITAS/H.E.S.S.

High Energy Astronomy!

eVkeVMeVGeVTeVPeVEeVZeV

LIGO

X

Radio

Gamma-Rays

Cosmic Rays

Ice Cube

Electromagnetic waves comprise particles calledPhotons

Cosmic rays comprise mainly Protons and Electrons

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Fermi the scientist and the telescope
Fermi(the scientist and the telescope)

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The pulsing g ray sky
The Pulsing g-ray Sky

Pulses at

1/10th true rate

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H e s s
H.E.S.S.

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Supernova explosion
Supernova Explosion

Supernova 1987a

in Magellanic Cloud

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The entire spectrum
The Entire Spectrum

TeV

Synchrotron

Radiation

Compton

Scattering

Gamma Rays

Radio

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Synchrotron radiation
Synchrotron Radiation

10 TeV

~0.01 Gauss

10 keV

Maximum Synchrotron Photon Energy ~ 100 MeV

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Compton scattering
Compton Scattering

10 TeV Electron

0.1 eV Infrared Photon

5 TeV Electron

5 TeV Gamma-rayPhoton

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Neutron star
Neutron Star

  • Mass: 1.5 suns

  • Radius: 10 km

  • Density: million, billion x water

  • Rotation Rate: 30 per second

  • Magnetic Field: 1 trillion Gauss

Wilson

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Faraday s disk
Faraday’s Disk

Magnet

Conducting

Disk

Crank

Voltage: 50 PetaVolts

Current: 300 TeraAmps

Power: 100,000 Suns

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The r estless crab
The Restless Crab

Hester

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Fermi flares
FermiFlares

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Spectral changes
Spectral Changes

September Flare

4 day variation

Synchrotron

Radiation

Limit

Compton

Scattering

Synchrotron

Radiation

NASM


Where is the flare
Where is the Flare?

Pulsar

Torus

Jet

NASM



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