Now showing items 11575-11594 of 11923

• Veritas observations of the tev binary ls i +61° 303 during 2008-2010 ﻿

(IOP Publishing, 2011-08-09)
We present the results of observations of the TeV binary LS I + 61 degrees 303 with the VERITAS telescope array between 2008 and 2010, at energies above 300 GeV. In the past, both ground-based gamma-ray telescopes VERITAS ...
• VERITAS Observations of the Unusual Extragalactic Transient Swift J164449.3+573451 ﻿

(2011)
We report on very-high-energy ($&gt;$100 GeV) gamma-ray observations of Swift J164449.3+573451, an unusual transient object first detected by the {\it Swift} Observatory and later detected by multiple radio, optical and ...
• Veritas observations of the unusual extragalactic transient swift j164449.3+573451 ﻿

(IOP Publishing, 2011-08-24)
We report on very high energy (&amp;gt;100 GeV) gamma-ray observations of Swift J164449.3+573451, an unusual transient object first detected by the Swift Observatory and later detected by multiple radio, optical, and X-ray ...
• Veritas observations of the γ‐ray binary ls i +61 303 ﻿

(IOP Publishing, 2008-06-01)
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 September and 2007 ...
• Veritas search for vhe gamma-ray emission from dwarf spheroidal galaxies ﻿

(IOP Publishing, 2010-08-18)
Indirect dark matter searches with ground-based gamma-ray observatories provide an alternative for identifying the particle nature of dark matter that is complementary to that of direct search or accelerator production ...
• Veritas upper limit on the very high energy emission from the radio galaxy ngc 1275 ﻿

(IOP Publishing, 2009-11-16)
The recent detection by the Fermi gamma-ray space telescope of high-energy gamma-rays from the radio galaxy NGC 1275 makes the observation of the very high energy (VHE: E &amp;gt; 100 GeV) part of its broadband spectrum ...
• VERITAS Upper Limit on the VHE Emission from the Radio Galaxy NGC 1275 ﻿

(2009)
The recent detection by the Fermi gamma-ray space telescope of high-energy gamma-rays from the radio galaxy NGC 1275 makes the observation of the very high energy (VHE: E &gt; 100 GeV) part of its broadband spectrum ...
• VERITAS: Status and Highlights ﻿

(2011)
The VERITAS telescope array has been operating smoothly since 2007, and has detected gamma-ray emission above 100 GeV from 40 astrophysical sources. These include blazars, pulsar wind nebulae, supernova remnants, gamma-ray ...
• Veritas: the very energetic radiation imaging telescope array system ﻿

(Elsevier BV, 2004-04-01)
• Veritas: the very energetic radiation imaging telescope array system ﻿

(Elsevier BV, 2002-05-01)
• Vertex algebras according to Isaac Newton ﻿

(IOP Publishing, 2017-09-08)
We give an introduction to vertex algebras using elementary forward difference methods originally due to Isaac Newton.
• Vertex Operators and Modular Forms ﻿

(2009)
The leitmotif of these Notes is the idea of a vertex operator algebra (VOA) and the relationship between VOAs and elliptic functions and modular forms. This is to some extent analogous to the relationship between a finite ...
• Vertical wind velocity measurements using a five-hole probe with remotely piloted aircraft to study aerosol–cloud interactions ﻿

(Copernicus GmbH, 2018-05-03)
The importance of vertical wind velocities (in particular positive vertical wind velocities or updrafts) in atmospheric science has motivated the need to deploy multi-hole probes developed for manned aircraft in small ...
• The very first requirement of treatment is that it should do no harm†, so why are antibiotics still overprescribed? ﻿

(Wiley, 2014-01-26)
[No abstract available]
• A Very High Energy Gamma-Ray Spectrum of 1ES 2344+514 ﻿

(2005)
The BL Lacertae (BL Lac) object 1ES 2344+514 (1ES 2344), at a redshift of 0.044, was discovered as a source of very high energy (VHE) gamma rays by the Whipple Collaboration in 1995 \citep{2344Catanese98}. This detection ...
• Very High Energy Observations of Gamma-Ray Burst Locations with the Whipple Telescope ﻿

(2007)
Gamma-ray burst (GRB) observations at very high energies (VHE, E &gt; 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that seen in blazars and ...
• Very High Energy Observations of Gamma-Ray Burst Locations with the Whipple Telescope ﻿

(2007)
Gamma-ray burst (GRB) observations at very high energies (VHE, E &gt; 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that seen in blazars and ...
• Very High Energy Observations of Gamma-Ray Burst Locations with the Whipple Telescope ﻿

(2007)
Gamma-ray burst (GRB) observations at very high energies (VHE, E &gt; 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that seen in blazars and ...
• Very high energy observations of the binaries v 404 cyg and 4u 0115+634 during giant x-ray outbursts ﻿

(American Astronomical Society, 2016-10-31)
Transient X-ray binaries produce major outbursts in which the X-ray flux can increase over the quiescent level by factors as large as 10(7). The low-mass X-ray binary V 404 Cyg and the high-mass system 4U 0115+634 underwent ...
• Very high energy outburst of markarian 501 in may 2009 ﻿

(EDP Sciences, 2016-10-01)
The very high energy (VHE; E &amp;gt; 100 GeV) blazar Markarian 501 was observed between April 17 and May 5 (MJD 54 938-54 956), 2009, as part of an extensive multiwavelength campaign from radio to VHE. Strong VHE yray ...