output
19922026
most citedMeasurements of Omega and Lambda from 42 High-Redshift Supernovae

18.1k citations

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390 papers · 1 filter

astro-ph2008★ 23 cited

An XMM-Newton Spectral and Timing Study of IGR J16207-5129: An Obscured and Non-Pulsating HMXB

John A. Tomsick, Sylvain Chaty, Jerome Rodriguez +3

We report on a 12 hr XMM-Newton observation of the supergiant High-Mass X-ray Binary IGR J16207-5129. This is only the second soft X-ray (0.4-15 keV, in this case) study of the sou…

astro-ph2008★ 3 cited

Search for Redshifted 2.2 MeV Neutron Capture Line From A0535+262 in Outburst

Sirin Caliskan, Emrah Kalemci, Matthew G. Baring +2

The Be/X-ray binary system A0535+262 underwent a giant outburst in May-June 2005, followed by a dimmer outburst in August-September 2005. This increased intensity provided an oppor…

astro-ph2008★ 130 cited

The Disruption and Fueling of M33

M. E. Putman, J. E. G. Peek, A. Muratov +7

The disruption of the M33 galaxy is evident from its extended gaseous structure. We present new data from the Galactic Arecibo L-Band Feed Array HI (GALFA-HI) Survey that show the…

astro-ph2008★ 53 cited

The Keck Aperture Masking Experiment: spectro-interferometry of 3 Mira Variables from 1.1 to 3.8 microns

H. C. Woodruff, M. J. Ireland, P. G. Tuthill +6

We present results from a spectro-interferometric study of the Miras o Cet, R Leo and W Hya obtained with the Keck Aperture Masking Experiment from 1998 Sep to 2002 Jul. The spectr…

astro-ph2008★ 41 cited

New SETI Sky Surveys for Radio Pulses

Andrew Siemion, Joshua Von Korff, Peter McMahon +9

Berkeley conducts 7 SETI programs at IR, visible and radio wavelengths. Here we review two of the newest efforts, Astropulse and Fly's Eye. A variety of possible sources of microse…

astro-ph2008★ 205 cited

GRB 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended Emission

D. A. Perley, B. D. Metzger, J. Granot +22

We report on observations of GRB 080503, a short gamma-ray burst with very bright extended emission (about 30 times the gamma-ray fluence of the initial spike) in conjunction with…

astro-ph2008★ 43 cited

Low-Velocity Halo Clouds

J. E. G. Peek, Carl Heiles, M. E. Putman +1

Models that reproduce the observed high-velocity clouds (HVCs) also predict clouds at lower radial velocities that may easily be confused with Galactic disk (|z| < 1 kpc) gas. We d…

astro-ph2008★ 11 cited

Chandra astrometry sets a tight upper limit to the proper motion of SGR 1900+14

A. De Luca, P. A. Caraveo, P. Esposito +1

The soft gamma-ray repeater (SGR) SGR 1900+14 lies a few arcminutes outside the edge of the shell supernova remnant (SNR) G42.8+0.6. A physical association between the two systems…

astro-ph2008★ 124 cited

Discovery of an Unusual Optical Transient with the Hubble Space Telescope

K. Barbary, K. S. Dawson, K. Tokita +27

We present observations of SCP 06F6, an unusual optical transient discovered during the Hubble Space Telescope Cluster Supernova Survey. The transient brightened over a period of ~…

astro-ph2008★ 66 cited

AGILE detection of delayed gamma-ray emission from GRB 080514B

A. Giuliani, S. Mereghetti, F. Fornari +55

GRB 080514B is the first gamma ray burst (GRB), since the time of EGRET, for which individual photons of energy above several tens of MeV have been detected with a pair-conversion…

astro-ph2008★ 84 cited

A Scalable Correlator Architecture Based on Modular FPGA Hardware, Reuseable Gateware, and Data Packetization

Aaron Parsons, Donald Backer, Henry Chen +9

A new generation of radio telescopes is achieving unprecedented levels of sensitivity and resolution, as well as increased agility and field-of-view, by employing high-performance…

astro-ph2008★ 48 cited

Looking Beyond Lambda with the Union Supernova Compilation

D. Rubin, E. V. Linder, M. Kowalski +21

The recent robust and homogeneous analysis of the world's supernova distance-redshift data, together with cosmic microwave background and baryon acoustic oscillation data, provides…

astro-ph2008★ 3.5k cited

LSST: from Science Drivers to Reference Design and Anticipated Data Products

Željko Ivezić, Steven M. Kahn, J. Anthony Tyson +310

(Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a sin…

astro-ph2008★ 278 cited

The Afterglows of Swift-era Gamma-Ray Bursts II.: Type I GRB versus Type II GRB Optical Afterglows

D. A. Kann, S. Klose, B. Zhang +21

We use a large sample of GRB afterglow and prompt-emission data (adding further GRB afterglow observations in this work) to compare the optical afterglows (or the lack thereof) of…

astro-ph2008★ 17 cited

Multiple Component Analysis of Time Resolved Spectra of GRB041006: A Clue to the Nature of Underlying Soft Component of GRBs

Yuji Shirasaki, Atsumasa Yoshida, Nobuyuki Kawai +30

GRB 041006 was detected by HETE-2 at 12:18:08 UT on 06 October 2004. This GRB displays a soft X-ray emission, a precursor before the onset of the main event, and also a soft X-ray…

astro-ph2008★ 14 cited

Spectral Properties of Prompt Emission of Four Short Gamma-Ray Bursts Observed by the Suzaku-WAM and the Konus-Wind

Masanori Ohno, Yasushi Fukazawa, Takuya Takahashi +16

We have performed a joint analysis of prompt emission from four bright short gamma-ray bursts (GRBs) with the Suzaku-WAM and the Konus-Wind experiments. This joint analysis allows…

astro-ph2007★ 98 cited

A Giant Flare from a Soft Gamma Repeater in the Andromeda Galaxy, M31

E. P. Mazets, R. L. Aptekar, T. L. Cline +6

The light curve, energy spectra, energetics, and IPN localization of an exceedingly intense short duration hard spectrum burst, GRB 070201, obtained from Konus-Wind, INTEGRAL (SPI-…

astro-ph2007★ 36 cited

An Intriguing Solar Microflare Observed with RHESSI, Hinode and TRACE

I. G. Hannah, S. Krucker, H. S. Hudson +2

Investigate particle acceleration and heating in a solar microflare. In a microflare with non-thermal emission to remarkably high energies ( keV), we investigate the hard X-ra…

astro-ph2007★ 354 cited

The Afterglows of Swift-era Gamma-Ray Bursts. I. Comparing pre-Swift and Swift era Long/Soft (Type II) GRB Optical Afterglows

D. A. Kann, S. Klose, B. Zhang +73

We have gathered optical photometry data from the literature on a large sample of Swift-era gamma-ray burst (GRB) afterglows including GRBs up to September 2009, for a total of 76…

astro-ph2007★ 436 cited

The UV-optical Galaxy Color-Magnitude Diagram I: Basic Properties

Ted K. Wyder, D. Christopher Martin, David Schiminovich +19

We have analyzed the bivariate distribution of galaxies as a function of ultraviolet-optical colors and absolute magnitudes in the local universe. The sample consists of galaxies w…

astro-ph2007★ 1 cited

The Search for Muon Neutrinos from Northern Hemisphere Gamma-Ray Bursts with AMANDA

The IceCube Collaboration, A. Achterberg, the IPN Collaboration +2

We present the results of the analysis of neutrino observations by the Antarctic Muon and Neutrino Detector Array (AMANDA) correlated with photon observations of more than 400 gamm…

astro-ph2007★ 165 cited

SPI observations of the diffuse 60Fe emission in the Galaxy

W. Wang, M. J. Harris, R. Diehl +12

Gamma-ray line emission from radioactive decay of 60Fe provides constraints on nucleosynthesis in massive stars and supernovae. The spectrometer SPI on board INTEGRAL has accumulat…

astro-ph2007★ 40 cited

The Detection of Far Ultraviolet Line Emission from Balmer-Dominated Supernova Remnants in the Large Magellanic Cloud

Parviz Ghavamian, William P. Blair, Ravi Sankrit +2

We present the first far ultraviolet (FUV) spectra of the four known Balmer-dominated supernova remnants (SNRs) in the Large Magellanic Cloud, acquired with the Far Ultraviolet Spe…

astro-ph2007★ 116 cited

Spitzer Space Telescope Observations of Kepler's Supernova Remnant: A Detailed Look at the Circumstellar Dust Component

William P. Blair, Parviz Ghavamian, Knox S. Long +4

We present 3.6 - 160 micron infrared images of Kepler's supernova remnant (SN1604) obtained with the IRAC and MIPS instruments on the Spitzer Space Telescope. We also present MIPS…