[astro-ph.IM] Artificial radio emissions have historically been a major focus of technosignature searches.
astro-ph.IM
![[LEFT] Diagram of a pixel component from a microbolometer array showing the absorbing surface, electrically conducting bridge connecting the absorber to the readout electronics, and the mirrored surface below the absorber. [RIGHT] A digital render of the Enceladus Thermal Mapper instrument. The arrow shows the location of the filter assembly. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Tailoring.png?resize=1200%2C606&ssl=1)
Posted inEnceladus
Tailoring Infra-Red Filters for Global Mapping of Enceladus’ Thermal Environment
[astro-ph.IM]. We present the results of an initial study into the feasibility and design of the Enceladus Thermal Mapper (ETM) instrument, designed to provide detailed temperature data for Enceladus, an […]
![Finite scalar spectral-cube reference at the channel centers nearest 0.76, 1.25, and 2.20 µm. -- full graphic below [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/A-Covariance-Aware-Framework.png?resize=1200%2C715&ssl=1)
Posted inBiosignatures & Paleobiology
A Covariance-Aware Framework for Spatially Resolved Exoplanet Biosignature Inference with the Solar Gravitational Lens
[astro-ph.IM] Assessing possible life on an exoplanet requires spatial, spectral, temporal, and environmental context. We develop a covariance-aware Solar Gravitational Lens (SGL) framework for regional biosignature inference from reconstructed Einstein-ring […]
![Schematic diagram of the Fragmented Pupil telescope concept. Left Panel: Bright stars available over ∼degree scale optical fields are condensed into an artificial cluster at sub-arcminute scales (red box). Middle Panel: This is accomplished in a single reflection from a high-stability tessellated optical surface aboard a stable space telescope. Right Panel: Precision astrometric monitoring can then be accomplished by analysis of the resulting well-sampled interferograms in the image plane. Here the central science target is surrounded by a set of 6 reference stars, condensed to lie at arcsecond scales. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Astrometric-detection.png?resize=1200%2C555&ssl=1)
Posted inExoplanets, -moons, -comets
Astrometric Detection Of Rocky Exoplanets From Inexpensive Space Platforms
[astro-ph.IM] The detection of orbiting exoplanets by way of astrometric monitoring of the host star to reveal gravitationally induced reflex motion requires extreme precision and measurement stability when targeting Earth-mass […]
![Optical layout of the HRI Imager. Light from the telescope focal plane is folded by COL-M1, collimated by COL-M2 to a 40 mm pupil where the forward interchange mechanism divides the beam, and re-imaged by four surfaces in each arm. Seven reflections separate the telescope from the UVIS detector and six from the NIR detector, which is the shortest path we found that meets the requirements of Section 2, and the basis of the throughput and coating arguments of Section 3.8. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/A-design-concept.jpg?resize=1200%2C722&ssl=1)
Posted inAstronomy & Telescopes
A Design Concept For The High Resolution Imager On The Habitable Worlds Observatory
[astro-ph.IM] The Habitable Worlds Observatory (HWO) will be NASA’s next flagship astrophysics mission, designed to search for signs of life on planets around nearby stars and conduct transformational science across […]
![In order to select our final Prime Mission targets, we plotted each target in our long list to show the range of planet radius and stellar host effective temperatures covered. We selected the top 10 gaseous (above 1.9 R⊕) and top 10 terrestrial (below 1.9 R⊕) targets to be our 20 Prime Mission targets, as indicated by the black ringed points. An additional 20 targets were selected as Secondary Targets as backups to the Prime Mission targets, shown with red rings. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/The-Pandora.png?resize=1200%2C719&ssl=1)
Posted inExoplanets, -moons, -comets
The Pandora SmallSat: Target Selection and Early Science
[astro-ph.IM]. The Pandora spacecraft is a smallsat selected in NASA’s inaugural class of Pioneers missions.
![Image credit: Izraelevitz et al. 2024 - -[astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/The-science.png?resize=1200%2C718&ssl=1)
Posted inVenus
The Science Case For An In-situ Measurement Platform In The Venus Clouds
[astro-ph.IM] The next step for Venus exploration after the remote sensing missions of the early 2030s will be in-situ aerial platforms, the Venus equivalent of rovers for Mars.
Posted inMars
Microbial Methanogenesis on Mars: A Life Detection Target For An MLE-Type Mission And Future Human Exploration
[astro-ph.IM] Methane (CH4) is one of the most enigmatic and potentially consequential trace gases detected on Mars, having demonstrated apparent seasonality, localized plumes, or, depending on who you ask, never […]
Posted inSETI & Technosignatures
Millimetre/Sub-Millimetre SETI: Expanding The Radio Technosignature Parameter Space With ALMA2040
[astro-ph.IM] The search for extraterrestrial intelligence (SETI) has been largely concentrated at centimetre wavelengths, and in particular in the ‘water hole’ (1.42-1.66 GHz) range. The millimetre and sub-millimetre sky is, […]
![CPD continuum flux densities at 345 GHz for different planet masses and separations. The dots mark the solar system gas giants, the directly imaged planets in PDS 70 and WISPIT 2, and candidate protoplanets in disc gaps. For comparison, the distribution of fully formed gas giants is shown (top panel). The white curves display sensitivity limits. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Planet-formation.png?resize=1200%2C717&ssl=1)
Posted inAstronomy & Telescopes
Planet Formation On Solar System Scales
[astro-ph.IM] Giant planets are often regarded as primordial protoplanetary “architects”. Their formation and interactions with planetesimals and other planets during and after the protoplanetary disc phase are key to setting […]