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Ionized gas extends over 40 kpc in an odd radio circle host galaxy

A new class of extragalactic astronomical sources discovered in 2021, named odd radio circles (ORCs)1, are large rings of faint, diffuse radio continuum emission spanning approximately 1 arcminute on the sky. Galaxies at the centres of several ORCs have photometric redshifts of z ≃ 0.3–0.6, implying physical scales of several 100 kpc in diameter for the radio emission, the origin of which is unknown. Here we report spectroscopic data on an ORC including strong [O ii] emission tracing ionized gas in the central galaxy of ORC4 at z = 0.4512. The physical extent of the [O ii] emission is approximately 40 kpc in diameter, larger than expected for a typical early-type galaxy2 but an order of magnitude smaller than the large-scale radio continuum emission. We detect an approximately 200 km s−1 velocity gradient across the [O ii] nebula, as well as a high velocity dispersion of approximately 180 km s−1. ....

Western Australia , Planck Collaborationet Al , Library Of Fast Radiative Shock Models , Astrophysics Source Code Library , Sloan Digital Sky , Evolutionary Map , Australian Square Kilometre Array , Australian Square Kilometre Array Pathfinder , Boolardy Engineering Test , Giant Meterwave Radio , Keck Cosmic Web Imager Integral Field , Fast Radiative Shock , Hubble Space Telescope , Source Code Library , Sloan Digital Sky Survey , Wide Field Infrared Survey Explorer ,

LOFAR Telescope Uncovers Hidden Planets

LOFAR Telescope Uncovers Hidden Planets
rtrfm.com.au - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from rtrfm.com.au Daily Mail and Mail on Sunday newspapers.

South Africa , Benjamin Pope , Graeme Watson , Dutch National Observatory , University Of Queensland , Low Frequency Array , Australian Square Kilometre Array ,

Epoch Times Australia Staff | The Epoch Times

Epoch Times Australia Staff | The Epoch Times
theepochtimes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from theepochtimes.com Daily Mail and Mail on Sunday newspapers.

Western Australia , Eddie Mcguire , John Barilaro , Anthony Albanese , Collingwood Football Club , Planning Commission , Department Of Fire , Waxit Party , A Queensland Member Of Parliament , Emergency Services , New South Wales , Artificial Intelligence , Deputy Premier , Independent Planning Commission , West Australians , Australian Square Kilometre Array , Southeast Asia , Queensland Member , Shen Yun Performing Arts , Mainland China , Western Australian , The Name ,

A Bright Flare from Star Proxima Centauri

Center for Astrophysics
A Hubble image of the M-dwarf star Proxima Centauri, our closest stellar neighbor about four light-years away. Proxima hosts two planets, and is known to actively flare. Astronomers studying the suitability for life evolving on exoplanets around M-dwarf stars have completed a multi-wavelength analysis of an extreme flare on Proxima Cen.
Hubble/ ESA/NAS
The prospects for life around low-mass, cool M-type stars have been extensively discussed because these stars are the most common ones in the galaxy, and they frequently host Earth-sized planets in their habitable zones (orbits where the surface temperatures can support liquid water). Unfortunately for the prospects of life, however, these stars also exhibit higher levels of stellar activity and flaring than do more massive, solar-type stars, and flares can gradually deplete a planet’s atmosphere of molecules needed for life. Moreover, these hostile conditions persist in some fashion throughout ....

Davidj Wilner , Ro Parke Loyd , Andrew Zic , Alyciaj Weinberger , Thomas Barclay , Janna Hughes , Stevenr Cranmer , Rachela Osten , David Wilner , Evgenya Shkolnik , Hanna Estes , Adamf Kowalski , Mereditha Macgregor , Allison Youngblood , Jan Forbrich , Las Campanas , Proxima Centauri , Exoplanet Survey Satellite , Australian Square Kilometre Array , Transiting Exoplanet Survey Satellite , Hubble Space Telescope , Proxima Cen , Extremely Short Duration Flare , Proxima Centauri Using Millimeter , Far Ultraviolet Observations , Parke Loyd ,