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RAS Journals @rasjournals.bsky.social · 2h

Published in MNRAS: "Probing the infrared–radio correlation of the full IRAS revised bright galaxy sample with MeerKAT and the VLA", Moloko et al. This is Fig. 2: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

MeerKAT (left) and WISE 3-colour (right) images of some of the sources in our sample depicting the different interaction stages found in this sample. The top row shows an example of an isolated galaxy (NGC 0157⁠), while the middle row depicts an interacting galaxy (IC 2163/NGC 2207⁠) and the last row shows a merging galaxy (NGC ⁠4038/9, aka Arp 244). The positions of the source are also overlaid on the images, identified as plus and x symbols for MeerKAT and WISE measurements, respectively.

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RAS Journals @rasjournals.bsky.social · 2h

Published in #GJI Geophysical Journal International: "Investigating Moho depth variations beneath the South American continent using geodetic constraints", Wang et al. This is Fig. 8: read the paper at academic.oup.com/gji/article/... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

Final inversion results of Moho depth variation. (a) Spatial distribution of the density contrast between the weighted mantle and crust, calculated from the CRUST1.0 global crustal model. (b) Spatial distribution of the inverted Moho depth variation. (c) Uncertainty associated with the Moho depth variation shown in (b). (d) Remaining Moho depth variation signals after grid-by-grid uncertainty screening, where regions A, B, C and D are defined for focused analysis, and the red pentagram marks the mouth of the Amazon River.

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Instituto Dom Luiz of Earth System Science @idlearth.bsky.social · 2d

🌋 Ever wondered how we can tell which way magma once flowed through the Earth? In a GJI study, Scientists on Maio Island (Cabo Verde) used magnetic fabric analysis to reconstruct it.

doi.org/10.1038/s415...

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Oxford Academic @oxfordacademic.bsky.social · 1d

Are you a solid-Earth geophysicist interested in shaping the future of research publishing?

Geophysical Journal International is inviting applications for the position of Deputy Editor-in-Chief. Apply by 22 October 2025: oxford.ly/3IYmr8m

@rasjournals.bsky.social

Job posting for Geophysical Journal International seeking a Deputy Editor-in-Chief. Deadline is October 22, 2025. 'Learn More and Apply Now'. Oxford University Press and Royal Astronomical Society logos are displayed.

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Oxford Academic @oxfordacademic.bsky.social · 3d

Enhance your academic profile with every publication. Publishing in #RASTI, a journal from @rasjournals.bsky.social, now brings the added advantage of Web of Science visibility: oxford.ly/4396zXi

RASTI has been officially listed in Web of Science, expanding global discoverability for authors and scholars.

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Kapteyn Astronomical Institute @kapteynastro.bsky.social · 3d

Een internationaal team van onderzoekers (met astonomen van @kapteynastro.bsky.social ) heeft een donker object ontdekt met een massa van ~1 miljoen zonnen 🌌
📄 Gepubliceerd in Nature Astronomy & MNRAS

Lees meer: www.astronomie.nl/nieuws/astro...

#astronomy #science #cosmos

Astronomen ‘fotograferen’ een mysterieus donker object in het verre heelal

www.astronomie.nl

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Royal Astronomical Society @royalastrosoc.bsky.social · 4d

We've got some very exciting speakers lined up for our new season of Public Talks. 🗣️🪐🚀🔭

The series kicks off this month with a talk to mark the Royal Observatory Greenwich's 350th anniversary, exploring its history and how our knowledge of the night sky has evolved over the last three centuries.

Graphic to promote the Royal Astronomical Society's free Public Talk about the Royal Observatory Greenwich's 350th anniversary.

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RAS Journals @rasjournals.bsky.social · 3d

Published in #MNRAS: "BOWIE-ALIGN: weak spectral features in KELT-7b’s JWST NIRSpec/G395H transmission spectrum imply a high cloud deck or a low-metallicity atmosphere", Ahrer et al. This is Fig. 10: academic.oup.com/mnras/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

Top: POSEIDON free chemistry retrievals comparison between using only JWST data (orange) and in combination with previously published HST data (pink: excluding ⁠H^-; purple: including ⁠H^-). Please see the paper for the full caption.

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RAS Journals @rasjournals.bsky.social · 3d

Published in #GJI Geophysical Journal International: "Tomographic imaging of the Pampean flat slab: evidence of subduction erosion and volatile migration", Maharaj et al. This is Fig. 1: to read the paper visit academic.oup.com/gji/article/... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

(a) Map of the Pampean flat slab region where the Nazca plate converges with the South American plate. The plate boundary is shown by a yellow line with triangles (based on Gómez et al. 2019); orange arrow indicates local convergence direction at a rate of ~7 cm yr^(-1) (DeMets et al. 2010). Thick light blue line represents a projection of the Juan Fernandez Ridge (based on Bello-González et al. 2018). Solid green and dashed yellow lines define geologic provinces and terranes, respectively (based on Marot et al. 2014 and Linkimer et al. 2020). Red triangles locate volcanoes (from Gómez et al. 2019). Thin black lines are slab contours plotted in intervals of 20 km depth (from Hayes 2018). SP—Sierra Pie de Palo and SF—Sierra de Valle Fértil. Blue box locates the region shown in (b). (b) Map showing the seismic networks used in this study. The white lines labeled A, B, C locate the cross-sections shown in Figs 6–8. Elevation is indicated in the palette at the bottom of the figure. Map at the upper left locates the region plotted in (a). (Figure adapted from Maharaj et al. 2023a).

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RAS Journals @rasjournals.bsky.social · 4d

Published in #MNRAS: "Continuum reverberation mapping of accretion discs surrounding supermassive black hole binaries: observational signatures", Fu et al. This is Fig. 1: to read the paper please visit academic.oup.com/mnras/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

A schematic for accretion discs around an SMBHB (not to scale). Please see the paper for the full caption.

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RAS Journals @rasjournals.bsky.social · 4d

Published in #GJI Geophysical Journal International: "Explainable deep learning for real-time prediction of uniform hazard spectral acceleration for on-site earthquake early warning", Shokrgozar-Yatimdar et al. academic.oup.com/gji/article/... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

(a) Epicentre distribution of 294 events included in the NGA-West2 data base. (b,c) Distribution of the selected DataSet1 and DataSet2 stations, represented by triangles. (d, e) earthquake-magnitude distribution of Datasets 1 and 2. (f,g) earthquake-hypocentre distance distribution of Datasets 1 and 2. (h,i). Vs30 distribution of Datasets 1 and 2.

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Oxford Academic @oxfordacademic.bsky.social · 4d

Behind every great paper is a thoughtful reviewer. If you care about mentoring, learning, and contributing to a vibrant research community, #RASTI wants you: oxford.ly/4pZ3Fy7

Become a RASTI reviewer and support fellow researchers

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RAS Journals @rasjournals.bsky.social · 5d

Published in #MNRAS: "Thick-to-thin disc transition and gas disc shrinking induced by the Gaia-Sausage-Enceladus merger", Funakoshi et al. This is Fig. 4: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

Galactic disc parameters as a function of stellar age as obtained from our MCMC DF fitting for the Au 23 simulation data. Please see the paper for the full caption.

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RAS Journals @rasjournals.bsky.social · 5d

Published in #GJI Geophysical Journal International: "Induced seismic swarm triggered by tunnel excavation and pore pressure diffusion mechanism", Ma et al. This is Fig. 1: to read the paper please visit academic.oup.com/gji/article/... @royalastrosoc.bsky.social @oxfordacademic.bsky.social

Active tectonics and seismic distribution in the study area. (a) Black hollow circles and red solid circles represent earthquakes recorded by the Guangdong Seismic Network during 2010∼2018 and 2019∼2022, respectively. Blue triangles indicate surface broad-band seismic stations, while yellow inverted triangles represent underground short-period seismic stations. Black curves denote faults. The grey-white curve marks the route of the Dafenghua Expressway, with the Hongtu Tunnel emphasized by a black segment. The black box outlines the study area, while the dashed box corresponds to the region shown in subfigure (b). The location of the Lianhuashan Fault Zone is highlighted by a red line in the zoomed-in map in the upper-left corner. (b) A 3-D schematic diagram of the tunnel location and surrounding topography, providing a spatial overview of the tunnel in relation to the local landforms. (c) A cross-sectional schematic diagram showing the mountain and tunnel positions, illustrating the tunnel’s underground spatial configuration and its relative position to the mountain. (d) Vertical component waveforms of the Fengshun swarm main shock (ML 3.7) and two other events recorded at three stations, with the origin time set as 0 s.

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RAS Journals @rasjournals.bsky.social · 5d

Published in #RASTI RAS Techniques & Instruments: "Spatially non-parametric recovery of intrinsic kinematic maps in pre- to post-merger galaxies", Kanowski et al. This is Fig. 6: to read the paper please visit academic.oup.com/rasti/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

Flux and stellar mass maps of our TNG100 sample, comparing the high-resolution, noise-less simulation data (left panels) with the KMOS-like mock data which have been convolved with the PSF and instrument spectral resolution, binned spatially and spectrally and have had noise added (right panels). All intrinsic data with flux > 0 is shown. The intrinsic data is shown in 6x6 arcsec apertures, with a white box denoting the KMOS-like 4x4 arcsec field-of-view of the observed data. The FWHM ellipse of the PSF applied to the observed data is also shown in the bottom left of the mock data panels.

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Royal Astronomical Society @royalastrosoc.bsky.social · 6d

Want to hear the latest Supermassive Podcast episode? 🎙️📻

It's all about the world's most powerful solar explosion 166 years ago – the Carrington Event – and why something similar today could be devastating. ☀️🌍

Check it out via your usual podcast provider or at: podfollow.com/supermassive/

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RAS Journals @rasjournals.bsky.social · 6d

Published in #MNRAS: "Investigation of the Axe-shaped Radio Galaxy J1051+5523 with uGMRT", Sudheesh et al. This is Fig. 2: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

Pan-STARRS colour composite image of SDSS J105147.39+552308.3. The image is an RGB composition of Pan-STARRS g (blue), r (green), and i (red) band images. The open circle shows the position of the host galaxy. The uGMRT Band 3 contours are overlaid over the optical image with six levels in multiples of 2, starting from 3 sigma where sigma = 0.044 mJy beam−1. The bottom left corner shows the radio beam.

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RAS Journals @rasjournals.bsky.social · 6d

Published in #GJI Geophysical Journal International: "Imprints of time-dependent microseism source distributions on the coda of correlations", Safarkhani et al. This is Fig. 1: to read the paper please visit academic.oup.com/gji/article/... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

The Gräfenberg seismic stations (depicted by purple triangles) are located in Germany, while the master stations (depicted by red triangles) are in Poland (PL.OJC), Finland (FN.OUL), France (FR.CRF), Portugal (PM.PESTR) and Italy (IV.MESG, IV.BRMO). The upper and lower inside panels feature a zoomed-out and zoomed-in view of the seismic array, its location and geometry.

RAS Journals @rasjournals.bsky.social · 6d

Published in #RASTI RAS Techniques & Instruments: "Astroclimes – measuring the abundance of CO2 and CH4 in the Earth’s atmosphere using astronomical observations", Fetzner Keniger et al. Read the paper at academic.oup.com/rasti/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

Atmospheric profiles for the entire CARMENES data set, generated with ginput. Pressure, temperature, CO_2 abundance, and H_2O abundance are shown as a function of height.

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Royal Astronomical Society @royalastrosoc.bsky.social · 6d

Want to take part in one of our specialist discussions? 🗣️

This Friday we're hosting our first Specialist Discussion Meeting of the 2025/26 season. 🌍⚛️

Join us in person or remotely by booking your spot at: ras.ac.uk/events-and-m...

Graphic to promote the October Specialist Discussion Meeting to be hosted by the Royal Astronomical Society.

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Royal Astronomical Society @royalastrosoc.bsky.social · 6d

Intrigued by supermassive black holes and how they shape their galaxies? ⚫🌌

Our other Specialist Discussion Meeting on Friday will take place at the Geological Society. 💬

Whether you're an RAS Fellow or not, you can secure a ticket at: ras.ac.uk/events-and-m...

Graphic to promote the October Specialist Discussion Meeting hosted by the Geological Society.

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RAS Journals @rasjournals.bsky.social · 7d

Published in #MNRAS: "Variation in Phobos geophysical properties using different shape models and dynamic Voxel mascons", Haser & Andert. This is Fig. 2: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

Willner’s and one of our Voxel model of Phobos. The Voxel model uses Willner’s shape, an edge length of 400 m, and the Pointcloud algorithm.

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RAS Journals @rasjournals.bsky.social · 7d

Published in #GJI Geophysical Journal International: "No evidence for extreme high fields or inner core nucleation 1.1 billion years ago from the Midcontinent Rift of North America", Huang et al. Read the paper: academic.oup.com/gji/article/... @oxfordacademic.bsky.social @royalastrosoc.bsky.social

Paleointensity versus time. Paleointensity based on select data following Zhou et al. (2024) and Huang et al. (2024), with 1.1 Ga values highlighted: box with vertical hatching from Kulakov et al. 2013; box with slashes: value of select refit data of Zhang et al. (2022) and Sprain et al. (2018) discussed here. Black downward arrow shows that these refit and reselected data imply lower field values at ca. 1.1 Ga. Other data: Thellier (thermal) SCP studies shown as dark squares), and bulk rock studies as light squares. Large squares: time-averaged paleomagnetic dipole moments (PDMs). Small squares: virtual dipole moments (VDMs). Circles: select Phanerozoic VDMs from Bono et al. (2019). Non-Thellier method results (non-thermal and thermal) shown by open circles and their sizes are weighted by the number of cooling units as follows (see Zhou et al. 2022). The dashed line is the ultralow Ediacaran PDM defined by Sept Îles intrusive rocks (Bono et al. 2019). Precambrian field evolution model (curve, 3450 to 565 Ma) is a weighted second-order polynomial regression of field strengths from Bono et al. (2019); the 565 to 532 Ma trend is from Zhou et al. (2022). Uncertainties on paleointensity values shown are 1⁠sigma. Line on shaded rectangle is the present-day field and its variability over 800 kyr from Tarduno et al. (2015).

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Kenneth Becker @geophotographer.org · 9d

Astronomers have found the most powerful odd radio circle ever detected. Named RAD J131346.9+500320, it lies nearly 8 billion light years away and shows two overlapping rings of radio emission.
🧪🔭🌌✨📡
#Astronomy #Radio #Galaxies #Discovery

Paper:
academic.oup.com/mnras/articl...

Most powerful 'odd radio circle' to date is discovered

drupal-media[data-view-mode=half_page_width] { display: inline-block; width: 50%; } The most distant and most powerful 'odd radio circle' (ORC) known so far has been...

ras.ac.uk

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cosmos4u.bsky.social @cosmos4u.bsky.social · 7d

RAD@home discovery of extragalactic radio rings and odd radio circles: clues to their origins - academic.oup.com/mnras/articl... -> Most powerful 'odd radio circle' to date is discovered: ras.ac.uk/news-and-pre...

RAD@home discovery of extragalactic radio rings and odd radio circles: clues to their origins

ABSTRACT. We present three rare and striking extragalactic radio sources discovered through visual inspection of low-frequency continuum maps from LoTSS DR

academic.oup.com

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