output
19932026
most citedObservational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

19.6k citations

Showing 2009 · astro-ph.HEShow all

9 papers · 2 filters

astro-ph.HE2009★ 37 cited

The High-Metallicity Explosion Environment of the Relativistic Supernova 2009bb

E. M. Levesque, A. M. Soderberg, R. J. Foley +23

We investigate the environment of the nearby (d ~ 40Mpc) broad-lined Type Ic supernova SN 2009bb. This event was observed to produce a relativistic outflow likely powered by a cent…

astro-ph.HE2009★ 323 cited

A Relativistic Type Ibc Supernova Without a Detected Gamma-ray Burst

A. M. Soderberg, S. Chakraborti, G. Pignata +21

Long duration gamma-ray bursts (GRBs) mark the explosive death of some massive stars and are a rare sub-class of Type Ibc supernovae (SNe Ibc). They are distinguished by the produc…

astro-ph.HE2009★ 103 cited

GRB 090426: The Environment of a Rest-Frame 0.35-second Gamma-Ray Burst at Redshift z=2.609

Emily M. Levesque, Joshua S. Bloom, Nathaniel R. Butler +14

We present the discovery of an absorption-line redshift of z = 2.609 for GRB 090426, establishing the first firm lower limit to a redshift for a gamma-ray burst with an observed du…

astro-ph.HE2009★ 36 cited

Search for Astrophysical Neutrino Point Sources at Super-Kamiokande

E. Thrane

It has been hypothesized that large fluxes of neutrinos may be created in astrophysical "cosmic accelerators." The primary background for a search for astrophysical neutrinos comes…

astro-ph.HE2009★ 148 cited

The Collimation and Energetics of the Brightest Swift Gamma-Ray Bursts

S. B. Cenko, D. A. Frail, F. A. Harrison +22

Long-duration gamma-ray bursts (GRBs) are widely believed to be highly-collimated explosions (opening angle theta ~ 1-10 deg). As a result of this beaming factor, the true energy r…

astro-ph.HE2009★ 9 cited

Search for Neutrinos from GRB 080319B at Super-Kamiokande

Kamiokande Collaboration, E. Thrane

We perform a search for neutrinos coincident with GRB 080319B, the brightest GRB observed to date, in a +/- 1,000 s window. No statistically significant coincidences were observed…

astro-ph.HE2009★ 133 cited

Limit on the diffuse flux of ultra-high energy tau neutrinos with the surface detector of the Pierre Auger Observatory

The Pierre Auger Collaboration

Data collected at the Pierre Auger Observatory are used to establish an upper limit on the diffuse flux of tau neutrinos in the cosmic radiation. Earth-skimming may interact…

astro-ph.HE2009★ 62 cited

A spectacular giant arc in the massive cluster lens MACSJ1206.2-0847

H. Ebeling, C. J. Ma, J. -P. Kneib +5

We discuss the X-ray and optical properties of the massive galaxy cluster MACSJ1206.2-0847 (z=0.4385), discovered in the Massive Cluster Survey (MACS). Our Chandra observation of t…

astro-ph.HE2009★ 18 cited

Spatio-Kinematic Structure at the Base of the [Fe II] Jets From L1551 IRS 5

Tae-Soo Pyo, Masahiko Hayashi, Naoto Kobayashi +2

We present observational results of the [Fe II] 1.644 um emission from the jets of L1551 IRS 5. The data sets were obtained through 13 fully sampled slits aimed at the base of the…