H e s s phases i and ii
This presentation is the property of its rightful owner.
Sponsored Links
1 / 16

H.E.S.S. Phases I and II PowerPoint PPT Presentation


  • 55 Views
  • Uploaded on
  • Presentation posted in: General

H.E.S.S. Phases I and II. Paula Chadwick, Dept. of Physics University of Durham. High Energy Stereoscopic System – H.E.S.S. Four 13m diameter telescopes Davies-Cotton design, 382 0.6 m diameter mirrors FoV 5 ° 960-pixel cameras Routine operations since January 2004.

Download Presentation

H.E.S.S. Phases I and II

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


H e s s phases i and ii

H.E.S.S. Phases I and II

Paula Chadwick, Dept. of Physics

University of Durham


High energy stereoscopic system h e s s

High Energy Stereoscopic System – H.E.S.S.

Four 13m diameter telescopes

Davies-Cotton design, 382 0.6 m diameter mirrors

FoV 5°

960-pixel cameras

Routine operations since January 2004

23°16'18'' S, 16°30'00'' E 1.8 km a.s.l


H e s s phases i and ii

M-PIK Heidelberg; Humboldt University, Berlin; University of Hamburg; Ruhr University, Bochum; Landessternwarte Heidelberg

LLR Ecole Polytechnique, LPNHE, PCC College de France, University of Grenoble, CERS Toulouse, CEA Saclay, Observatoire de Paris-Meudon, University of Montpellier II

Durham University, Leeds University

Dublin Institute for Advanced Studies

Charles University, Prague

Yerevan Physics Institute, Armenia

University of Namibia

North-Western University, South Africa

Nicolaus Copernicus Astronomical Centre, Warsaw

Astronomical Observatory, Jagiellonian University, Cracow


Many different categories of object observed with h e s s i

Many Different Categories of Object Observed with H.E.S.S. I

  • Pulsar Wind Nebulae

  • Shell Supernova Remnants

  • Binary systems

  • Young star cluster(s)

  • Galactic centre (inc. diffuse emission)

  • Blazars

  • Radio galaxy/ies

  • Unidentified objects…

The beginnings of source taxonomy


Improvement in sensitivity the crab nebula

Improvement in Sensitivity – The Crab Nebula

The Crab Nebula is the ‘standard candle’ in this field – it is a bright, constant source of gamma rays right up to several 10s of TeV.


Pks2155 304 in 2006

PKS2155-304in 2006

Preliminary

WOW!

In late July 2006, this AGN produced a burst that made the object on average 7 times brighter than the Crab Nebula. The burst contained over 60,000 gamma rays – c.f. 5134 gamma rays from the Crab detected over lifetime of EGRET.


H e s s phases i and ii

H.E.S.S. Phase II

Original idea – have an array of 16 telescopes in total….

…it’s also expensive, so how about another 4 telescopes?

Factor of about 2 improvement in area, slightly better angular resolution and 20.5 improvement in sensitivity.

…provides about a factor of 4 extra in area, slightly better angular resolution and a factor of 2-3 in sensitivity.

Hmmm….


H e s s phases i and ii

HESS II – a single, large (600 m2) telescope.

Lower energy in standalone mode

Improved sensitivity at higher energy in coincidence mode


Telescope structure

Telescope Structure

Altaz mount, rotation on rails

Parabolic mirror, 596 m2, f = 36m

Total weight – 560 tonnes


Trial assembly earlier this year

Trial Assembly Earlier this Year


Central bearings and azimuth rail

Central Bearings and Azimuth Rail


Camera design

Camera Design


H e s s phases i and ii

Can we really let the sun set on UK involvement in VHE gamma rays??


  • Login