New Variable Star (U Capricorni)

Luminous Red Variable Star

We report photometry and spectroscopy of the evolution of Nova Sagittarii 1994 #1 (V4332 Sagittarii) during outburst. We compare the photometric and spectral evolution of this outburst to known classes of outbursts – including classical novae and outbursts occurring on symbiotic stars – and find this object does not conform to any known class of outburst. The closest match to the behavior of th...

Charge sensitive cumulants and flow in U+U collisions from STAR

The MACHO Project LMC Variable Star Inventory : IV . New R Coronae Borealis

We report the discovery of two new R Coronae Borealis (RCB) stars in the Large Magellanic Cloud (LMC) using the MACHO project photometry database. The identiication of both stars has been connrmed spectroscopically. One is a cool RCB star (T eff 5000 K) characterized by very strong Swan bands of C 2 and violet bands of CN, and weak or absent Balmer lines, G-band and 12 C 13 C bands. The second ...

U-Likelihood and U-Updating Algorithms: Statistical Inference in Latent Variable Models

In this paper we consider latent variable models and introduce a new U-likelihood concept for estimating the distribution over hidden variables. One can derive an estimate of parameters from this distribution. Our approach differs from the Bayesian and Maximum Likelihood (ML) approaches. It gives an alternative to Bayesian inference when we don’t want to define a prior over parameters and gives...

A new signature scheme based on $(U|U+V)$ codes

We present here a new code-based digital signature scheme. This scheme uses (U |U + V ) codes, where both U and V are random. We prove that the scheme achieves existential unforgeability under adaptive chosen message attacks under two assumptions from coding theory, both strongly related to the hardness of decoding in a random linear code. The proof imposes a uniform distribution on the produce...