764 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University College DublinIE182 papers
- Center for Astrophysics Harvard & SmithsonianUS167 papers
- Purdue University West LafayetteUS154 papers
- McGill UniversityCA153 papers
- University of California, Santa CruzUS151 papers
- Washington University in St. LouisUS150 papers
- Iowa State UniversityUS149 papers
- University of California, Los AngelesUS149 papers
- University of UtahUS149 papers
- Columbia UniversityUS138 papers
- Munster Technological UniversityIE138 papers
- University of ChicagoUS138 papers
35 papers · 1 filter
VERITAS Observations of day-scale flaring of M87 in 2010 April
E. Aliu, T. Arlen, T. Aune +88
VERITAS has been monitoring the very-high-energy (VHE; >100GeV) gamma-ray activity of the radio galaxy M87 since 2007. During 2008, flaring activity on a timescale of a few days wa…
Analysis of Hydrogen Cyanide Hyperfine Spectral Components towards Star Forming Cores
Robert M. Loughnane, Matt P. Redman, Eric R. Keto +2
Although hydrogen cyanide has become quite a common molecular tracing species for a variety of astrophysical sources, it, however, exhibits dramatic non-LTE behaviour in its hyperf…
Topologies on as points in
Jorge L. Bruno, Aisling E. McCluskey
A topology on a nonempty set specifies a natural subset of . By identifying with the totally disconnected compact Hausdorff space…
Accessing the cohomology of discrete groups above their virtual cohomological dimension
Alexander D. Rahm
We introduce a method to explicitly determine the Farrell-Tate cohomology of discrete groups. We apply this method to the Coxeter triangle and tetrahedral groups as well as to the…
Free Bosonic Vertex Operator Algebras on Genus Two Riemann Surfaces II
Geoffrey Mason, Michael P. Tuite
We continue our program to define and study -point correlation functions for a vertex operator algebra on a higher genus compact Riemann surface obtained by sewing surfaces…
Multiwavelength Observations of the Previously Unidentified Blazar RX J0648.7+1516
E. Aliu, T. Aune, M. Beilicke +84
We report on the VERITAS discovery of very-high-energy (VHE) gamma- ray emission above 200 GeV from the high-frequency-peaked BL Lac object RXJ0648.7+1516 (GBJ0648+1516), associate…
The 2010 very high energy gamma-ray flare & 10 years of multi-wavelength observations of M 87
The H. E. S. S. Collaboration, :, A. Abramowski +442
Abridged: The giant radio galaxy M 87 with its proximity, famous jet, and very massive black hole provides a unique opportunity to investigate the origin of very high energy (VHE;…
VLT observations of Fermi pulsars
R. P. Mignani, A. Shearer, A. de Luca +3
Many energetic gamma-ray pulsars discovered by Fermi are promising candidates for optical follow-ups. We present the results of the first deep optical observations of the two Vela-…
The Double Slit Experiment With Polarizers
M. Holden, D. G. C. McKeon, T. N. Sherry
The double slit experiment provides a standard way of demonstrating how quantum mechanics works. We consider modifying the standard arrangement so that a photon beam incident upon…
Nonreciprocal Anderson Localization in Magneto-Optical Random Structures
K. Y. Bliokh, S. A. Gredeskul, P. Rajan +2
We study, both analytically and numerically, disorder-induced localization of light in random layered structures with magnetooptical materials. The Anderson localization in such st…
VERITAS Observations of Gamma-Ray Bursts Detected by Swift
VERITAS Collaboration, V. A. Acciari, E. Aliu +84
We present the results of sixteen Swift-triggered GRB follow-up observations taken with the VERITAS telescope array from January, 2007 to June, 2009. The median energy threshold an…
Detection of Pulsed Gamma Rays Above 100 GeV from the Crab Pulsar
VERITAS Collaboration, E. Aliu, T. Arlen +93
We report the detection of pulsed gamma rays from the Crab pulsar at energies above 100 Gigaelectronvolts (GeV) with the VERITAS array of atmospheric Cherenkov telescopes. The dete…
Spin-to-orbital angular momentum conversion in focusing, scattering, and imaging systems
K. Y. Bliokh, E. A. Ostrovskaya, M. A. Alonso +3
We present a general theory of spin-to-orbital angular momentum (AM) conversion of light in focusing, scattering, and imaging optical systems. Our theory employs universal geometri…
VLT observations of the two Fermi pulsars PSR J1357-6429 and PSR J1048-5832
R. P. Mignani, A. Shearer, A. De Luca +3
Optical observations of pulsars are crucial to study the neutron star properties, from the structure and composition of the interior, to the properties and geometry of the magnetos…
VERITAS Observations of the Unusual Extragalactic Transient Swift J164449.3+573451
E. Aliu, T. Arlen, T. Aune +79
We report on very-high-energy (100 GeV) gamma-ray observations of Swift J164449.3+573451, an unusual transient object first detected by the {\it Swift} Observatory and later det…
The Large Observatory for X-ray Timing (LOFT)
M. Feroci, the LOFT Consortium
High-time-resolution X-ray observations of compact objects provide direct access to strong-field gravity, to the equation of state of ultra-dense matter and to black hole masses an…
Alternate two-dimensional quantum walk with a single-qubit coin
C. Di Franco, M. Mc Gettrick, T. Machida +1
We have recently proposed a two-dimensional quantum walk where the requirement of a higher dimensionality of the coin space is substituted with the alternance of the directions in…
Inverse Mapping of Polarised Optical Emission from Pulsars : Basic Formulation and Determination of Emission Altitude
John Mc Donald, Padraig O' Connor, Dairmaid de Burca +2
We present an inverse mapping approach to determining the emission height of the optical photons from pulsars, which is directly constrained by empirical data. The model discussed…
Multiwavelength Observations of the VHE Blazar 1ES 2344+514
V. A. Acciari, E. Aliu, T. Arlen +70
Multiwavelength observations of the high-frequency-peaked blazar 1ES2344+514 were performed from 2007 October to 2008 January. The campaign represents the first contemporaneous dat…
TeV and Multi-wavelength Observations of Mrk 421 in 2006-2008
V. A. Acciari, E. Aliu, T. Arlen +103
We report on TeV gamma-ray observations of the blazar Mrk 421 (redshift of 0.031) with the VERITAS observatory and the Whipple 10m Cherenkov telescope. The excellent sensitivity of…
Fermi-LAT Observations of Markarian 421: the Missing Piece of its Spectral Energy Distribution
LAT collaboration, A. A. Abdo et al., the MAGIC collaboration +4
We report on the gamma-ray activity of the high-synchrotron-peaked BL Lacertae object Mrk 421 during the first 1.5 years of Fermi operation, from 2008 August 5 to 2010 March 12. We…
Resolutions of modules with initially linear syzygies
Emil Sköldberg
We introduce the class of modules with initially linear syzygies, which includes ideals with linear quotients, and study their minimal resolutions. Using a contracting homotopy for…
Complexifiable characteristic classes
Alexander D. Rahm
We examine the topological characteristic cohomology classes of complexified vector bundles. In particular, all the classes coming from the real vector bundles underlying the compl…
VERITAS Observations of the TeV Binary LS I +61 303 During 2008-2010
V. A. Acciari, E. Aliu, T. Arlen +83
We present the results of observations of the TeV binary LS I +61 303 with the VERITAS telescope array between 2008 and 2010, at energies above 300 GeV. In the past, both ground-ba…