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Amani Madkour

minibook activity

Science

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Phenolics: types, biosynthesis and functions.

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Use of mutants in understanding seedling development.pptx

RenuJangid3

module for grade 9 for distance learning

levieagacer

Molecular markers are identifiable DNA sequences used to locate genes associated with specific traits or genetic conditions. A molecular marker is a specific gene fragment present at a specific position called ‘locus’ (pleural loci) in the genome of a cell. In the pool of unknown DNA or in a whole chromosome, these molecular markers help in identification of particular sequence of DNA at particular location.

Molecular markers- RFLP, RAPD, AFLP, SNP etc.

Silpa

development of diagnostic enzyme assay to detect leuser virus

NazaninKarimi6

Genetics and epigenetics of ADHD and comorbid conditions

bassianu17

PSYCHOSOCIAL NEEDS. in nursing II sem pptx

Suji236384

Bhiwandi Bhiwandi ❤CALL GIRL 7870993772 ❤CALL GIRLS ESCORT SERVICE In Bhiwan...

Monika Rani

Site Acceptance Test .

Poonam Aher Patil

Genome sequencing,shotgun sequencing.pptx

Silpa

Context. WASP-76 b has been a recurrent subject of study since the detection of a signature in high-resolution transit spectroscopy data indicating an asymmetry between the two limbs of the planet. The existence of this asymmetric signature has been confirmed by multiple studies, but its physical origin is still under debate. In addition, it contrasts with the absence of asymmetry reported in the infrared (IR) phase curve. Aims. We provide a more comprehensive dataset of WASP-76 b with the goal of drawing a complete view of the physical processes at work in this atmosphere. In particular, we attempt to reconcile visible high-resolution transit spectroscopy data and IR broadband phase curves. Methods. We gathered 3 phase curves, 20 occultations, and 6 transits for WASP-76 b in the visible with the CHEOPS space telescope. We also report the analysis of three unpublished sectors observed by the TESS space telescope (also in the visible), which represents 34 phase curves. Results. WASP-76 b displays an occultation of 260±11 and 152±10 ppm in TESS and CHEOPS bandpasses respectively. Depending on the composition assumed for the atmosphere and the data reduction used for the IR data, we derived geometric albedo estimates that range from 0.05 ± 0.023 to 0.146 ± 0.013 and from <0.13 to 0.189 ± 0.017 in the CHEOPS and TESS bandpasses, respectively. As expected from the IR phase curves, a low-order model of the phase curves does not yield any detectable asymmetry in the visible either. However, an empirical model allowing for sharper phase curve variations offers a hint of a flux excess before the occultation, with an amplitude of ∼40 ppm, an orbital offset of ∼−30◦ , and a width of ∼20◦ . We also constrained the orbital eccentricity of WASP-76 b to a value lower than 0.0067, with a 99.7% confidence level. This result contradicts earlier proposed scenarios aimed at explaining the asymmetry observed in high-resolution transit spectroscopy. Conclusions. In light of these findings, we hypothesise that WASP-76 b could have night-side clouds that extend predominantly towards its eastern limb. At this limb, the clouds would be associated with spherical droplets or spherically shaped aerosols of an unknown species, which would be responsible for a glory effect in the visible phase curves.

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b

Sérgio Sacani

CURRENT SCENARIO OF POULTRY PRODUCTION IN INDIA

Dr. TATHAGAT KHOBRAGADE

Theoretical predictions and observational data indicate a class of sub-Neptune exoplanets may have water-rich interiors covered by hydrogen-dominated atmospheres. Provided suitable climate conditions, such planets could host surface liquid oceans. Motivated by recent JWST observations of K2-18 b, we self-consistently model the photochemistry and potential detectability of biogenic sulfur gases in the atmospheres of temperate sub-Neptune waterworlds for the first time. On Earth today, organic sulfur compounds produced by marine biota are rapidly destroyed by photochemical processes before they can accumulate to significant levels. Domagal-Goldman et al. suggest that detectable biogenic sulfur signatures could emerge in Archean-like atmospheres with higher biological production or low UV flux. In this study, we explore biogenic sulfur across a wide range of biological fluxes and stellar UV environments. Critically, the main photochemical sinks are absent on the nightside of tidally locked planets. To address this, we further perform experiments with a 3D general circulation model and a 2D photochemical model (VULCAN 2D) to simulate the global distribution of biogenic gases to investigate their terminator concentrations as seen via transmission spectroscopy. Our models indicate that biogenic sulfur gases can rise to potentially detectable levels on hydrogen-rich water worlds, but only for enhanced global biosulfur flux (20 times modern Earth’s flux). We find that it is challenging to identify DMS at 3.4 μm where it strongly overlaps with CH4, whereas it is more plausible to detect DMS and companion byproducts, ethylene (C2H4) and ethane (C2H6), in the mid-infrared between 9 and 13 μm. Unified Astronomy Thesaurus concepts: Exoplanet atmospheres (487); Exoplanet

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

Sérgio Sacani

POGONATUM : morphology, anatomy, reproduction etc.

Silpa

CYTOGENETIC MAP................ ppt.pptx

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Role of AI in seed science Predictive modelling and Beyond.pptx

Arvind Kumar

LUNULARIA -features, morphology, anatomy ,reproduction etc.

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Atp synthase , Atp synthase complex 1 to 4.

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Reboulia: features, anatomy, morphology etc.

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Climate Change Impacts on Terrestrial and Aquatic Ecosystems.pptx

DiariAli

Recently uploaded (20)

Phenolics: types, biosynthesis and functions.

Use of mutants in understanding seedling development.pptx

module for grade 9 for distance learning

Molecular markers- RFLP, RAPD, AFLP, SNP etc.

development of diagnostic enzyme assay to detect leuser virus

Genetics and epigenetics of ADHD and comorbid conditions

PSYCHOSOCIAL NEEDS. in nursing II sem pptx

Bhiwandi Bhiwandi ❤CALL GIRL 7870993772 ❤CALL GIRLS ESCORT SERVICE In Bhiwan...

Site Acceptance Test .

Genome sequencing,shotgun sequencing.pptx

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b

CURRENT SCENARIO OF POULTRY PRODUCTION IN INDIA

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

POGONATUM : morphology, anatomy, reproduction etc.

CYTOGENETIC MAP................ ppt.pptx

Role of AI in seed science Predictive modelling and Beyond.pptx

LUNULARIA -features, morphology, anatomy ,reproduction etc.

Atp synthase , Atp synthase complex 1 to 4.

Reboulia: features, anatomy, morphology etc.

Climate Change Impacts on Terrestrial and Aquatic Ecosystems.pptx