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
26 papers · 1 filter
Search for Primordial Black Holes with SGARFACE
M. Schroedter, F. Krennrich, S. LeBohec +7
The Short GAmma Ray Front Air Cherenkov Experiment (SGARFACE) uses the Whipple 10 m telescope to search for bursts of rays. SGARFACE is sensitive to bursts with duration from a…
A census of molecular hydrogen outflows and their sources along the Orion A molecular ridge: characteristics and overall distribution
C. J. Davis, D. Froebrich, T. Stanke +9
We present wide-field near-IR images of Orion A. K and H2 1-0S(1) images of a contiguous 8 sqr degree region are compared to photometry from Spitzer and dust-continuum maps obtaine…
The June 2008 flare of Markarian 421 from optical to TeV energies
The Agile Collaboration, Webt Collaboration, Magic Collaboration +2
We present optical, X-ray, high energy ( GeV) and very high energy ( GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken betwee…
Discovery of Very High-Energy Gamma-Ray Radiation from the BL Lac 1ES 0806+524
VERITAS Collaboration, V. Acciari, E. Aliu +90
The high-frequency-peaked BL-Lacertae object \objectname{1ES 0806+524}, at redshift z=0.138, was observed in the very-high-energy (VHE) gamma-ray regime by VERITAS between November…
Wythoff polytopes and low-dimensional homology of Mathieu groups
Mathieu Dutour Sikiric, Graham Ellis
We describe two methods for computing the low-dimensional integral homology of the Mathieu simple groups and use them to make computations such as $H_5(M_{23},\ZZ)=\ZZ_7$ and $H_3(…
Exceptional Vertex Operator Algebras and the Virasoro Algebra
Michael P. Tuite
We consider exceptional vertex operator algebras for which particular Casimir vectors constructed from the primary vectors of lowest conformal weight are Virasoro descendants of th…
A congruence problem for polyhedra
Alexander Borisov, Mark Dickinson, Stuart Hastings
It is well known that to determine a triangle up to congruence requires three measurements: three sides, two sides and the included angle, or one side and two angles. We consider v…
Injections of mapping class groups
Javier Aramayona, Christopher J. Leininger, Juan Souto
We construct new monomorphisms between mapping class groups of surfaces. The first family of examples injects the mapping class group of a closed surface into that of a different c…
Embedding Non-Ground Logic Programs into Autoepistemic Logic for Knowledge Base Combination
Jos de Bruijn, Thomas Eiter, Axel Polleres +1
In the context of the Semantic Web, several approaches to the combination of ontologies, given in terms of theories of classical first-order logic and rule bases, have been propose…
NEAR-IR Spectroscopy of Young Stars in the Braid Nebula Star Formation Region in Cygnus Ob7
Colin Aspin, Tracy L. Beck, Tae-Soo Pyo +8
We present 1.4 to 2.5 um integral field spectroscopy of 16 stars in the Braid Nebula star formation region in Cygnus OB7. These data forms one aspect of a large-scale multi-wavelen…
Quiver Presentations for Descent Algebras of Exceptional Type
Goetz Pfeiffer
The descent algebra of a finite Coxeter group is a basic algebra, and as such it has a presentation as quiver with relations. In recent work, we have developed a combinatorial…
Investigations of the magnetospheric plasma distribution in the vicinity of a pulsar - I Basic formulation
John Mc Donald, Andrew Shearer
The magnetospheric plasma distribution in the vicinity of a pulsar at various inclination angles is investigated using a new relativistic, parallel 3D Particle-In-Cell (PIC) code D…
VERITAS Discovery of >200GeV Gamma-ray Emission from the Intermediate-frequency-peaked BL Lac Object W Comae
VERITAS Collaboration, V. A. Acciari, E. Aliu +80
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 betwe…
Algebraic constructions of LDPC codes with no short cycles
Ted Hurley, Paul McEvoy, Jakub Wenus
An algebraic group ring method for constructing codes with no short cycles in the check matrix is derived. It is shown that the matrix of a group ring element has no short cycles i…
Optical Observations of PSR J0205+6449
A. Shearer, V. V. Neustroev
PSR J0205+6449 is a X-ray and radio pulsar in supernova remnant 3C 58. We report on observations of the central region of 3C 58 using the 4.2-m William Herschel Telescope with the…
Simultaneous Absolute Timing of the Crab Pulsar at Radio and Optical Wavelengths
T. Oosterbroek, I. Cognard, A. Golden +7
The Crab pulsar emits across a large part of the electromagnetic spectrum. Determining the time delay between the emission at different wavelengths will allow to better constrain t…
A Mini-survey of Ultracool Dwarfs at 4.9 GHz
A. Antonova, J. G. Doyle, G. Hallinan +2
A selection of ultracool dwarfs are known to be radio active, with both gyrosynchrotron emission and the electron cyclotron maser instability being given as likely emission mechani…
Confirmation of the Electron Cyclotron Maser Instability as the Dominant Source of Radio Emission from Very Low Mass Stars and Brown Dwarfs
G. Hallinan, A. Antonova, J. G. Doyle +3
We report on radio observations of the M8.5 dwarf LSR J1835+3259 and the L3.5 dwarf 2MASS J00361617+1821104, which provide the strongest evidence to date that the electron cyclotro…
Reference-less detection, astrometry, and photometry of faint companions with adaptive optics
Szymon Gladysz, Julian C. Christou
We propose a complete framework for the detection, astrometry, and photometry of faint companions from a sequence of adaptive optics corrected short exposures. The algorithms explo…
Cyclic brightening in the short-period WZ Sge-type cataclysmic variable SDSS J080434.20+510349.2
S. V. Zharikov, G. H. Tovmassian, V. V. Neustroev +8
We have observed a new cataclysmic variable (CV) SDSS J080434.20+510349.2 and study the origin of a long-term variability found in its light curve. Multi-longitude time-resolved ph…
VERITAS Observations of the gamma-Ray Binary LS I +61 303
V. A. Acciari, M. Beilicke, G. Blaylock +74
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 cycl…
Observation of gamma-ray emission from the galaxy M87 above 250 GeV with VERITAS
V. A. Acciari, M. Beilicke, G. Blaylock +74
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 Te…
A Search for Dark Matter Annihilation with the Whipple 10m Telescope
M. Wood, G. Blaylock, S. M. Bradbury +33
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 tele…
BF Eridani: a cataclysmic variable with a massive white dwarf and an evolved secondary
V. V. Neustroev, S. Zharikov
We present high- and medium-resolution spectroscopic observations of the cataclysmic variable BF Eri during its low and bright states. The orbital period of this system was found t…