Status of the VERITAS Observatory (2008)
Holder, J., Acciari, V. A., Aliu, E., Arlen, T., Beilicke, M., Benbow, W., ...
VERITAS, an Imaging Atmospheric Cherenkov Telescope (IACT) system for gammma-ray astronomy in the GeV-TeV range, has recently completed its first season of observations with a full array of four...
Falcone, A. D., Williams, D. A., Baring, M. G., Blandford, R., Buckley, J., Connaughton, V., ...
This is a report on the findings of the gamma ray burst working group for the white paper on the status and future of TeV gamma-ray astronomy. The white paper is an APS commissioned document, and the...
Aliu, E., Beilicke, M., Benbow, W., Boettcher, M., Bradbury, S. M., ...
We report the detection of very high-energy gamma-ray emission from the intermediate-frequency-peaked BL Lacertae object W Comae (z=0.102) by VERITAS. The source was observed between January and...
Falcone, A. D., Williams, D. A., Baring, M. G., Blandford, R., Connaughton, V., Coppi, P., ...
This is a short report on the preliminary findings of the gamma ray burst (GRB) working group for the white paper on the status and future of very high energy (VHE; >50 GeV) gamma-ray astronomy. The...
Observations of X-ray Flares from Gamma Ray Bursts (2008)
Falcone, A. D., Morris, D., Racusin, J., Chincarini, G., Moretti, A., Romano, P., ...
Swift-XRT observations of the X-ray emission from gamma ray bursts (GRBs) and during the GRB afterglow have led to many new results during the past two years. One of these exciting results is that...
VERITAS Observations of the gamma-Ray Binary LS I +61 303 (2008)
Acciari, V. A., Beilicke, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., ...
LS I +61 303 is one of only a few high-mass X-ray binaries currently detected at high significance in very high energy gamma-rays. The system was observed over several orbital cycles (between...
Observation of gamma-ray emission from the galaxy M87 above 250 GeV with VERITAS (2008)
Acciari, V. A., Beilicke, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., ...
The multiwavelength observation of the nearby radio galaxy M87 provides a unique opportunity to study in detail processes occurring in Active Galactic Nuclei from radio waves to TeV gamma-rays. Here...
A Search for Dark Matter Annihilation with the Whipple 10m Telescope (2008)
Wood, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Byrum, K. L., Chow, Y. C. K., ...
We present observations of the dwarf galaxies Draco and Ursa Minor, the local group galaxies M32 and M33, and the globular cluster M15 conducted with the Whipple 10m gamma-ray telescope to search for...
Veritas observations of the gamma-ray binary LS I+61 303 (2008)
Acciari, V. A., Beilicke, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., ...
LS I +61 303 is one of only a few high-mass X-ray binaries currently detected at high significance in very high energy gamma-rays. The system was observed over several orbital cycles ( between 2006...
Observation of gamma-ray emission from the galaxy M87 above 250 GeV with VERITAS (2008)
Acciari, V. A., Beilicke, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., ...
The multiwavelength observation of the nearby radio galaxy M87 provides a unique opportunity to study in detail processes occurring in active galactic nuclei from radio waves to TeV gamma-rays. Here...
Fossati, G., Buckley, J. H., Bond, I. H., Bradbury, S. M., Carter-Lewis, D. A., Chow, Y. C. K., ...
We present a detailed analysis of week-long simultaneous observations of the blazar Mrk 421 at 2-60 keV X-rays (RXTE) and TeV gamma-rays (Whipple and HEGRA) in 2001. Accompanying optical monitoring...
A search for dark matter annihilation with the whipple 10 m telescope (2008)
Wood, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Byrum, K. L., Chow, Y. C. K., ...
We present observations of the dwarf galaxies Draco and Ursa Minor, the Local Group galaxies M32 and M33, and the globular cluster M15 conducted with the Whipple 10 m gamma-ray telescope to search...
First results from VERITAS (2008)
Hanna, D., Acciari, V. A., Amini, R., Badran, H. M., Blaylock, G., Bradbury, S. M., ...
VERITAS is an array of four, 12-m-diameter, Cherenkov telescopes, designed to explore the very-high-energy gamma-ray sky in the energy band between 100 GeV and 50 TeV. Its construction and...
Falcone, A.D., Williams, D.A., Baring, M.G., Blandford, R., Connaughton, V., Coppi, P., ...
Original paper can be found at: http://proceedings.aip.org/proceedings/ Copyright American Institute of Physics DOI: 10.1063/1.2943545
Fossati, G., Buckley, J. H., Bond, I. H., Bradbury, S. M., Carter-Lewis, D. A., Chow, Y. C. K., ...
(Abridged) We present a detailed analysis of week-long simultaneous observations of the blazar Mrk421 at 2-60 keV X-rays (RXTE) and TeV gamma-rays (Whipple and HEGRA) in 2001. The unprecedented...
Falcone, A. D., Morris, D., Racusin, J., Chincarini, G., Moretti, A., Romano, P., ...
Observations of gamma ray bursts (GRBs) with Swift produced the initially surprising result that many bursts have large X-ray flares superimposed on the underlying afterglow. The flares were...
Chincarini, G., Moretti, A., Romano, P., Falcone, A. D., Morris, D., Racusin, J., ...
We present the first systematic investigation of the morphological and timing properties of flares in GRBs observed by Swift/XRT. We consider a large sample drawn from all GRBs detected by Swift,...
Attributes of flares in Gamma Ray Bursts: sample I (2007)
Chincarini, G., Moretti, A., Romano, P., Falcone, A. D., Campana, S., Covino, S., ...
We discuss some of the preliminary results and findings derived from the analysis of a first sample of flares detected by the XRT on board Swift. The analysis shows that the morphology of flares is...
Very High Energy Observations of Gamma-Ray Burst Locations with the Whipple Telescope (2007)
Horan, D., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
Gamma-ray burst (GRB) observations at very high energies (VHE, E > 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that...
Very high energy observations of gamma-ray burst locations with the whipple telescope (2007)
Horan, D., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
Gamma-ray burst (GRB) observations at very high energies (VHE; E > 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that...
The Whipple Observatory 10 m gamma-ray telescope, 1997-2006 (2007)
Kildea, J., Atkins, R. W., Badran, H. M., Blaylock, G., Bond, I. H., Bradbury, S. M., ...
Details are presented of the Whipple Observatory's 10 m atmospheric Cherenkov telescope and camera, as it evolved during the period 1997 until 2006. The design of the telescope and camera's optical...
Very high energy observations of gamma-ray burst locations with the whipple telescope (2007)
Horan, D., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
Gamma-ray burst (GRB) observations at very high energies (VHE; E > 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that...
Konopelko, A., Atkins, R. W., Blaylock, G., Buckley, J. H., Butt, Y., Carter-Lewis, D. A., ...
We report on observations of the sky region around the unidentified TeV gamma-ray source (TeV J2032+ 4130) carried out with the Whipple Observatory 10 m atmospheric Cerenkov telescope for a total of...
The Whipple Observatory 10 m gamma-ray telescope, 1997-2006 (2007)
Kildea, J., Atkins, R. W., Badran, H. M., Blaylock, G., Bond, I. H., Bradbury, S. M., ...
Konopelko, A., Atkins, R. W., Blaylock, G., Buckley, J. H., Butt, Y., Carter-Lewis, D. A., ...
We report on observations of the sky region around the unidentified TeV gamma-ray source TeV J2032+4130 carried out with the Whipple Observatory 10 m atmospheric Cherenkov telescope for a total of...
The First VERITAS Telescope (2006)
Holder, J., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
The first atmospheric Cherenkov telescope of VERITAS (the Very Energetic Radiation Imaging Telescope Array System) has been in operation since February 2005. We present here a technical description...
GRB 050713A: High Energy Observations of the GRB Prompt and Afterglow Emission (2006)
Morris, D. C., Reeves, J., Pal'shin, V., Garczarczyk, M., Falcone, A. D., Burrows, D. N., ...
Swift discovered GRB 050713A and slewed promptly to begin observing with its narrow field instruments 72.6 seconds after the burst onset, while the prompt gamma-ray emission was still detectable in...
TeV Gamma-Ray Observations of the Perseus and Abell 2029 Galaxy Clusters (2006)
Perkins, J. S., Badran, H. M., Blaylock, G., Bradbury, S. M., Cogan, P., Chow, Y. C. K., ...
Galaxy clusters might be sources of TeV gamma rays emitted by high-energy protons and electrons accelerated by large scale structure formation shocks, galactic winds, or active galactic nuclei....
Late-Time X-ray Flares during GRB Afterglows: Extended Internal Engine Activity (2006)
Falcone, A. D., Burrows, D. N., Romano, P., Kobayashi, S., Lazzati, D., Zhang, B., ...
Observations of gamma ray bursts (GRBs) with Swift produced the initially surprising result that many bursts have large X-ray flares superimposed on the underlying afterglow. These flares were...
X-ray flare in XRF 050406: evidence for prolonged engine activity (2006)
Romano, P., Moretti, A., Banat, P. L., Burrows, D. N., Campana, S., Chincarini, G., ...
We present observations of XRF 050406, the first burst detected by Swift showing a flare in its X-ray light curve. During this flare, which peaks at t_peak ~210s after the BAT trigger, a flux...
A new search for primordial black hole evaporations using the Whipple gamma-ray telescope (2006)
Linton, E. T., Atkins, R. W., Badran, H. M., Blaylock, G., Boyle, P. J., Buckley, J. H., ...
Stephen Hawking's prediction that black holes should radiate like black bodies has several important consequences, including the possibility of the detection of small (similar to 10(15) g) black...
TeV gamma-ray observations of the Perseus and Abell 2029 galaxy clusters (2006)
Perkins, J. S., Badran, H. M., Blaylock, G., Bradbury, S. M., Cogan, P., Chow, Y. C. K., ...
Galaxy clusters might be sources of TeV gamma rays emitted by high-energy protons and electrons accelerated by large-scale structure formation shocks, galactic winds, or active galactic nuclei....
The first VERITAS telescope (2006)
Holder, J., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
The first atmospheric Cherenkov telescope of VERITAS (the Very Energetic Radiation Imaging Telescope Array System) has been in operation since February 2005. We present here a technical description...
A new search for primordial black hole evaporations using the Whipple gamma-ray telescope (2006)
Linton, E. T., Atkins, R. W., Badran, H. M., Blaylock, G., Boyle, P. J., Buckley, J. H., ...
Stephen Hawking's prediction that black holes should radiate like black bodies has several important consequences, including the possibility of the detection of small (similar to 10(15) g) black...
TeV gamma-ray observations of the Perseus and Abell 2029 galaxy clusters (2006)
Perkins, J. S., Badran, H. M., Blaylock, G., Bradbury, S. M., Cogan, P., Chow, Y. C. K., ...
Galaxy clusters might be sources of TeV gamma rays emitted by high-energy protons and electrons accelerated by large-scale structure formation shocks, galactic winds, or active galactic nuclei....
Evidence for a Canonical Gamma-Ray Burst Afterglow Light Curve in the Swift XRT Data.-- (2006)
Nousek, J.A., Kouveliotou, C., Grupe, D., Page, K.L., Granot, J., Ramirez-Ruiz, E., ...
The Giant X-ray Flare of GRB 050502B: Evidence for Late-Time Internal Engine Activity (2005)
Falcone, A. D., Burrows, D. N., Lazzati, D., Campana, S., Kobayashi, S., Zhang, B., ...
Until recently, X-ray flares during the afterglow of gamma ray bursts (GRBs) were a rarely detected phenomenon, thus their nature is unclear. During the afterglow of GRB 050502B, the largest X-ray...
Evidence for a Canonical GRB Afterglow Light Curve in the Swift/XRT Data (2005)
Nousek, J. A., Kouveliotou, C., Grupe, D., Page, K., Granot, J., Ramirez-Ruiz, E., ...
We present new observations of the early X-ray afterglows of the first 27 gamma-ray bursts (GRBs) detected with the Swift X-ray Telescope (XRT). The early X-ray afterglows show a canonical behavior,...
Falcone, A. D., Collaboration, The VERITAS
Blazars have traditionally been separated into two broad categories based upon their optical emission characteristics; BL Lacs, with faint or no emission lines, and flat spectrum radio quasars...
Falcone, A. D., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D., ...
Blazars have traditionally been separated into two broad categories based on their optical emission characteristics. Blazars with faint or no emission lines are referred to as BL Lacertae objects (...
X-ray spectral variability of extreme BL Lacertae active galactic nucleus H1426+428 (2004)
Falcone, A. D., Cui, W., Finley, J. P.
Between 2002 March 7 and 2002 June 15, intensive X-ray observations were carried out on the extreme BL Lac object H1426+428 with instruments on board the Rossi X-Ray Timing Explorer (RXTE). These...