uGMRT observations of the hot-Saturn WASP 69b: Radio-Loud Exoplanet-Exomoon Survey II (RLEES II)

Exomoons have so far eluded ongoing searches. Several studies have exploited transit and transit timing variations and high-resolution spectroscopy to identify potential exomoon candidates. One method of detecting and confirming these exomoons is to search for signals of planet-moon interactions. In this work, we present the first radio observations of the exomoon candidate system WASP 69b. Based on the detection of alkali metals in the transmission spectra of WASP-69b, it was deduced that the system might be hosting an exomoon. WASP 69b is also one of the exoplanet systems that will be observed as part of JWST cycle-1 GTO. This makes the system an excellent target to observe and follow up. We observed the system for 32 hrs at 150 MHz and 218 MHz using the upgraded Giant Metrewave Radio Telescope (uGMRT). Though we do not detect radio emission from the systems, we place strong $3\sigma$ upper limits of 3.3 mJy at 150 MHz and 0.9 mJy at 218 MHz. We then use these upper limits to estimate the maximum mass loss from the exomoon candidate.Comment: Accepted in MNRAS, 8 pages, 4 Figure

Análisis bayesiano de supervivencia basado en el modelo de Rayleigh: addendum

In the printed version of the paper Bayesian survival analysis based on the Rayleigh model (Trabajos de Estadística Vol. 5, no. 1, 1990), figures num. 1, 2 and 3 mentioned on page 91 were not printed with the paper. That may create confusion and problems for the readers in understanding the conclusions, as in the absence of figures the paper is incomplete. For this reason we publish the figures in this issu

Bayesian survival analysis based on the Rayleigh model

In this paper, the Bayesian analysis of the survival data arising from a Rayleigh model is carried out under the assumption that the clinical study based on n patients is terminated at the dth death, for some preassigned d (0 < d = n), resulting in the survival times t1 = t2 = ... = td, and (n - d) survivors. For the prior knowledge about the Rayleigh parameter, the gamma density, the inverted gamma density, and the beta density of the second kind are respectively assumed, and for each of these prior densities, the Bayes estimators of the mean survival time, the hazard function, and the survival function are obtained by assuming the usual squared error loss function. Finally, the analysis is extended to situations wherein the exact survival time is not available for any patient but only the deaths in given time intervals are recorded. The computations are illustrated by a numerical exampl

Bayesian reliability analysis for the two-parameter exponential distribution

This paper discusses the Bayesian reliability analysis for the two-parameter exponential distribution on the basis of the life tests that are terminated after a pre assigned number of failures, when the prior distribution of the location parameter, given the scale, is assumed to be exponential, while the scale parameter is assumed to have an inverse Gaussian prior distribution. The usual assumption of the squared error loss function is also made. A situation dealing with attribute life testing is also considered

BCL10 is required for NF-κB nuclear translocation by both canonical and non-canonical pathways and for NF-κB-inducing kinase (NIK) phosphorylation

B-cell CLL/lymphoma 10 (BCL10), the caspase recruitment domain (CARD)-containing protein involved in the etiology of the mucosa-associated lymphoid tissue (MALT) lymphomas, has been implicated in inflammatory processes in epithelial cells, as well as in immune cells. Experiments in this report indicate that BCL10 is required for activation of Nuclear Factor (NF)-κB by both canonical and non-canonical pathways, following stimulation by the sulfated polysaccharide carrageenan (CGN). In WT and IkappaB-kinase (IKK)α-/- mouse embryonic fibroblasts, increases in phospho-IκBα, nuclear NF-κB p65 (RelA) and p50, and KC, the mouse analog of human IL-8, were markedly reduced by silencing BCL10 or by exposure to the free radical scavenger Tempol. In IKKβ-/- cells, BCL10 silencing, but not Tempol, reduced the CGN-induced increases in KC, phospho-NF-κB-inducing kinase (NIK), cytoplasmic NF-κBp100, and nuclear NF-κBp52 and RelB, suggesting a BCL10 requirement for activation of the non-canonical pathway. In NCM460 cells, derived from normal, human colonic epithelium, the CGN-induced increases in NF-κB family members, p65, p50, p52, and RelB, were inhibited by BCL10 silencing. Although ELISA and confocal images demonstrated no change in total NIK following CGN, increases in phospho-NIK in the WT, IKKα-/- and IKKβ-/- cells were inhibited by silencing BCL10. These findings indicate an upstream signaling role for BCL10, in addition to its effects on IKKγ, the regulatory component of the IKK signalosome, and a requirement for BCL10 in both canonical and non-canonical pathways of NF-κB activation. Also, the commonly used food additive carrageenan can be added to the short list of known activators of both pathways

Ion irradiation-induced, localized sp(2) to sp(3) hybridized carbon transformation in walls of multiwalled carbon nanotubes

In this report, ion irradiation-induced localized sp(2) to sp(3) hybridized carbon transformation in multiwalled carbon nanotubes (MWCNTs) was observed after irradiating MWCNTs with high-energy Au+8 ions (100 MeV). The used MWCNTs were grown using cobaltocene and benzene as catalyst and carbon source, respectively'by the thermal CVD technique and consist of both unfilled and Co-filled tubes. Prior to irradiation, the MWCNT sample was characterized using scanning electron microscope and micro-Raman and photoluminescence spectrometers. The effect of ion fluence on MWCNT walls and transformation of sp(2) to sp(3) sites was analyzed by Raman spectroscopy, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy. We found that as the fluence increased, the localized transformation from sp(2) to sp(3) sites occurred in the walls of MWCNTs, which was evident by the emergence of peak at approximately 1543 cm(-1) associated with the G peak in tetrahedral amorphous carbon (ta-C) and the vanishing of 2D band (2700 cm(-1)). Furthermore, we observed broadening in D and G, with slight shift in their positions and consistent decrease in 2D band intensity, as fluence increased