MARS ODYSSEY WIND GLAST MESSENGER

ADDING THE GLAST GAMMA-RAY BURST MONITOR TO THE 3rd INTERPLANETARY NETWORK Kevin Hurley UC Berkeley Space Sciences Laboratory Berkeley, CA

SUZAKU INTEGRAL RHESSI SWIFT AGILE THE GLAST GRBM

• 200 bursts/year

• Threshold sensitivity 0.35 photons cm-2 s-1 for untriggered events (cf. BATSE untriggered threshold ~0.1 photons cm-2 s-1)

• Location accuracies: – ~8º onboard, real-time – ~5º, near real-time IPN, ~arcminutes – ~3º after manual intervention A QUICK REVIEW OF IPN – BATSE RESULTS

•919 BATSE GRBs observed and localized by the IPN, + many SGR bursts

•Data used to refine the BATSE localization error model (Pendleton et al. 1999)

•IPN Results published in four catalogs

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200 I L U N N A 1 50 N P I

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1B 00 M U N

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0 0.1 1 10 100 ANNULUS WIDTH, ARCMINUTES THE 3rd INTERPLANETARY NETWORK IN 2007

• Mars Odyssey, Ulysses, Wind, MESSENGER, Suzaku, INTEGRAL, RHESSI, Swift , + AGILE, GLAST, and a possible Space Station experiment

10 10 N P I

E 8 8 H T

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E 6 6 M I R E P X E

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R E B M U

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0 0 1991 1993 1995 1997 1999 2001 2003 2005 2007 YEAR IPN EFFICIENCY (FLUX UNITS) GLAST THRESHOLD (0.35, UNTRIGGERED) 1

0.8 Y C N E I C I F

0F .6 E

N P I

0.4 IPN EFFICIENCY ~32% 0.2 0.1 1 10 GRB 256 ms PEAK FLUX, photons cm-2 s-1 GRBM + 1 DISTANT IPN GRBM + 2 OR MORE SPACECRAFT

REDUCTION IN AREA REDUCTION IN AREA X 30 - 100 3 – 4 ORDERS OF MAG. EVEN A SINGLE IPN ANNULUS CAN MAKE A DIFFERENCE

IPN ANNULUS 18 GeV PHOTON

COMPTEL

EGRET GRB LOCALIZATION UTILISATION OF GLAST & IPN LOCALIZATIONS

• REFINING THE GRBM LOCALIZATION UNCERTAINTY

• LAT OBSERVATIONS OF GRBM ERROR BOXES

• AMANDA, ICE CUBE, RICE, ANITA ν OBSERVATIONS

• MILAGRO SEARCHES FOR VHE EMISSION

• LIGO

• SWIFT ToO OBSERVATIONS SUMMARY

• GRBM WILL BE THE 28th EXPERIMENT TO JOIN THE 3rd IPN SINCE 1990

• IPN/GRBM PERFORMANCE CAN BE PREDICTED BASED ON BATSE RESULTS

• GRBM ERROR BOXES CAN BE SUBSTANTIALLY IMPROVED FOR ~70 GRBs/YEAR

• IPN/GRBM LOCALIZATIONS CAN BE USED BY A WIDE COMMUNITY MARS ODYSSEY ULYSSES WIND GLAST MESSENGER

SUZAKU INTEGRAL RHESSI SWIFT AGILE IPN EFFICIENCY (FLUENCE UNITS)

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0.8 Y C N E I C I F

0F .6 E

N P I

0.4

0.2 10-7 10-6 10-5 GRB FLUENCE, erg cm-2