A Study of the Ground Level Event of April 15, 2001 with GRAND
Project GRAND, a proportional wire chamber array, is used to examine the increased counting rate of single muons during the
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Optical monitoring of CI Cam after the X-ray burst on April 1, 1998
Results of optical spectral monitoring of CI Cam just after its a unusual bright and rapidly evolving X-ray burst are
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Prompt and afterglow X-ray emission from the X-Ray Flash of 2002 April 27
We report on the X-ray observations of the X-ray flash (XRF) which occurred on 2002 April 27, three days before
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Neutrino Transport in Strongly Magnetized Proto-Neutron Stars and the Origin of Pulsar Kicks: I. The Effect of Parity Violation in Weak Interactions
The original paper describes neutrino cooling calculations in the presence of asymmetric neutrino opacities due to parity violation in strong
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BeppoSAX Observations of the BL Lac Object Mkn 501 in an Intermediate State
The BL Lac object Mkn 501 was observed with the BeppoSAX satellite at three epochs in April-May 1998, simultaneously with
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The GRB followup Euro-US Consortium: results from the ESO telescopes
In October 1997, the Italian and Dutch GRB teams started a collaboration on ESO optical follow-up of rapidly and accurately
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1996/1997 low luminosity state and state transitions of GRS1915+105: RXTE observations
The results of X-ray observations of Galactic superluminal jet source GRS 1915+105 during its low luminosity state and state transitions
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2mm Wavelength VLBI of SiO Masers and AGN
In April 2002 an array of antennas operating at 129GHz successfully detected VLBI fringes on both continuum AGN and SiO
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"Four Ways to TeV Scale", Ankara'97 Workshop and Something Else
The first Part contains the invited talk given at the First International Workshop on Linac-Ring Type ep and $gamma$p Colliders
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Accounting for running alpha_s for the non-singlet components of the structure functions F_1 and g_1 at small x
Talk given at 9th Workshop DIS 2001, Bologna, April,27 -May,1, 2001.
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A Chandra LETGS observation of V4743 Sagittarius: A Super Soft X-ray Source and a Violently Variable Light Curve
V4743 Sgr (Nova Sgr 2002 No. 3) was discovered on 20 September 2002. We obtained a 5ks ACIS-S spectrum in
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After Sitges
Summary talk given at the International Workshop on Linear Colliders LCWS 99, Sitges (Barcelona), April 28 - May 5, 1999
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A Functional and Lagrangian Formulation of Two-Dimensional Topological Gravity
We reconsider two-dimensional topological gravity in a functional and lagrangian framework. We derive its Slavnov-Taylor identities and discuss its (in)dependence
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AGN sudies above 1.5 TeV with the HEGRA 5 m^2 Cherenkov Telescope (Sources observed: Mkn 421, Mkn 501, MS 0116+319, PKS 2209+236, NGC 315 and W Comae)
The HEGRA 5 m^2 air Cherenkov telescope (CT1) was used to search for gamma-ray emission above 1.5 TeV from a
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Algebraic Renormalization: perturbative twisted considerations on topological Yang-Mills theory and on N=2 supersymmetric gauge theories
Lectures given at the First School on Field Theory and Gravitation, Vitória, Esp\'ırito Santo, Brazil, 15-19 April, 1997.
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An All-Sky Search for Steady VHE Gamma-Ray Sources
The Milagrito water Cherenkov detector in the Jemez Mountains near Los Alamos, New Mexico took data from February 1997 to
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An anomalous low-state from the globular cluster X-ray source X1732-304 (Terzan 1)
During a BeppoSAX observation of the X-ray burst source X1732-304 located in the globular cluster Terzan 1 in 1999 April,
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A New View of the Supersoft X-Ray Source Cal 87 Observed with XMM-Newton
Cal 87 was observed with XMM-Newton in April of 2003. The source shows a rich emission line spectrum, where lines
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An optical time-delay estimate for the double gravitational lens system B1600+434
We present optical I-band light curves of the gravitationally lensed double QSO B1600+434 from observations obtained at the Nordic Optical
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A SSC model for the spectral variability of the intermediate blazar ON 231
In April-May 1998 the blazar ON 231 (W Com, B2 1219+28) showed an extraordinary optical outburst alerted by the Perugia
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Astrometric Calibration and Estimate of the Systematic Error in WXM Localizations Obtained by the Chicago Bayesian Method
WXM gives GRB localizations in instrument coordinates. WXM localizations must be converted to celestial coordinates using spacecraft aspect information obtained
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Automatic Gauged R-Parity
In the minimal supersymmetric standard model, the existence of R-parity is not required for the internal consistency of the theory
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Baryonic Dark Matter and Big-Bang Nucleosynthesis
The enclosed paper was submitted for publication in Ap.J Lett. in February 1992. It has been rejected on the grounds
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BeppoSAX observation of the transient X-ray pulsar GS 1843+00
We present the results from both the timing and spectroscopic analysis of the transient X-ray pulsar GS 1843+00 observed by
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