Simulated Shower hitting the Milagro Detector

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Milagro
TeV All-Sky Gamma Ray Observatory
 
 
  NEW: Details about Milagro:
  Physics with Milagro (overview)
  Milagro Technical Description
  Recent Milagro Results
  Milagro Sources
  The above figure shows recent results on a number of TeV source candidates. A full description can be found in the Recent Results section or in our Recent Publications
  galaxy
 

The above figure shows the Milagro view of our Galaxy at ~20 TeV.

 

.Milagro is water-Cherenkov extensive air detector that allows us to monitor a significant fraction of the northern sky at TeV energies on a 24-hour, 7-day per week basis. Milagro consists of a ~5,000 m sq central (pond) detector surrounded by an array of 175 instrumented water tanks, (outriggers) that span an area of roughly 40,000 m sq. Unlike scintillation arrays, the Milagro pond densely samples the EAS particles that reach the ground. By measuring the arrival time of the Cherenkov light produced by the shower particles, the arrival direction of the original particle is determined. Milagro is complementary to both air Cherenkov telescopes (ACT) and satellite experiments by observing where and when ACTs cannot and by having a large effective area at high energies which satellites do not. Milagro also has the capability to see large scale structure and diffuse objects which are difficult for exisiting ACTs.

Milagro is located in a 60m x 80m x 8m covered pond in the Jemez mountains near Los Alamos, New Mexico. It is at an altitude of 2630m.
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Schematic of the Milagro Detector

 

 

Outriggers

 

Milagro Simulation Movies (.avi files with divx codec) by Miguel Morales (UCSC)

2 Gev Photons hitting the pond at 20 degrees

2 TeV Proton Shower hitting the pond

2 TeV Gamma Shower followed through atmosphere

2 TeV Proton Shower followed through atmosphere


 

Recent Milagro Publications:

TeV Gamma-Ray Sources from a Survey of the Galactic Plane with Milagro
A. A. Abdo et al.
Accepted for publication in Astrophysical Journal Letters


Milagro Constraints on Very High Energy Emission from Short Duration Gamma-Ray Bursts
A. A. Abdo et al.
Accepted for publication in the Astrophysical Journal


Discovery of TeV Gamma-Ray Emission from the Cygnus Region of the Galaxy
A. A. Abdo et al.
Astrophysical Journal Letters 658 (2007) L33-L36


Evidence for TeV Gamma-Ray Emission from a Region of the Galactic Plane
R. Atkins et al.
Physical Review Letters 95 (2005) 251103


Constraints on Very High Energy Gamma-Ray Emission from Gamma-Ray Bursts
R. Atkins et al.
Astrophysical Journal 630 (2005) 996-1002


Search for very high energy gamma rays from WIMP annihilations near the Sun with the Milagro Detector
R. Atkins et al.
Physical Review D 70 (2004) 083516


TeV Gamma-Ray Survey of the Northern Hemisphere Sky Using the Milagro Observatory
R. Atkins et al.
Astrophysical Journal 608 (2004) 680-685


Limits on Very High Energy Emission from Gamma-Ray Bursts with the Milagro Observatory
R. Atkins et al.
Astrophysical Journal Letters 604 (2004) L25-L28


Observation of TeV Gamma Rays from the Crab Nebula with Milagro Using a New Background Rejection Technique
R. Atkins et al.
Astrophysical Journal 595 (2003) 803-811


Observation of GeV Solar Energetic Particles from the 1997 November 6 Event Using Milagrito
A. Falcone et al.
Astrophysical Journal 588 (2003) 557-565


The High-Energy Gamma-Ray Fluence and Energy Spectrum of GRB 970417a from Observations with Milagrito
R. Atkins et al.
Astrophysical Journal 583 (2003) 824-832


A Survey of the Northern Sky for TeV Point Sources
K. Wang et al.
Astrophysical Journal 558 (2001) 477-481


Milagrito, a TeV air-shower array
R. Atkins et al.
Nuclear Instruments and Methods in Physics Research Section A 449 (2000) 478-499


Evidence for TeV Emission from GRB 970417a
R. Atkins et al.
Astrophysical Journal Letters 533 (2000) L119-L122


TeV Observations of Markarian 501 with the Milagrito Water Cherenkov Detector
R. Atkins et al.
Astrophysical Journal Letters 525 (1999) L25-L28

Collabortaion picture

The Milagro Collaboration - 2007

 

 

Milagro Ph.D. Theses


Discovery of Localized TeV Gamma-Ray Sources and Diffuse TeV Gamma-Ray Emission from the Galactic Plane with Milagro Using a New Background Rejection Technique
Aous Ahmad Abdo
Michigan State University (2007)


A Search for Short Duration Very High Energy Emission from Gamma-Ray Bursts
David Noyes
University of Maryland, College Park (2005)


A Search for TeV Emission from Active Galaxies using the Milagro Observatory
Elizabeth A. Hays
University of Maryland, College Park (2004)


Search for Relic Neutralinos with Milagro
Lazar Fleysher
New York University (2003)


Search for Gamma Ray Emission from Galactic Plane with Milagro
Roman Fleysher
New York University (2003)


A Study of TeV Emission from the Crab Nebula and Selected AGN Using the Milagro Gamma-Ray Observatory
Wystan Benbow
University of California, Santa Cruz (2002)


A Search for TeV Gamma-Ray Burst Emission with the Milagro Observatory
Miguel F. Morales
University of California, Santa Cruz (2002)


A Search of the Northern Sky for Short Bursts of TeV Emission Using the Milagrito Detector
Joseph F. McCullough
University of California, Santa Cruz (2001)


Observation and Study of GeV Solar Energetic Particles Using the MIlagrito Extensive Air Shower Detector
Abraham Falcone
University of New Hampshire (2001)


Study of the Shadow of the Moon in Very High Energy Cosmic Rays with the Milagrito Water Cherenkov Detector
Morgan O'Hagan Wascko
University of California, Riverside (2001)


An All-sky Search for VHE Gamma-Ray Sources With The Milagrito Water Cerenkov Telescope
Kelin Wang
University of California, Riverside (2001)


Search for a TeV Component of Gamma-Ray Bursts Using the Milagrito Detector
Maria Isabel R. Leonor
University of California, Irvine (2000)


Search for High-Energy Emission from Gamma-Ray Bursts with a Large Water Cerenkov Detector
Tom Yang
University of California, Santa Cruz (1998)

 


 

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