Results 71 to 80 of about 285 (125)

A radio-detected type Ia supernova with helium-rich circumstellar material. [PDF]

Nature, 2023
Kool EC, Johansson J, Sollerman J, Moldón J, Moriya TJ, Mattila S, Schulze S, Chomiuk L, Pérez-Torres M, Harris C, Lundqvist P, Graham M, Yang S, Perley DA, Strotjohann NL, Fremling C, Gal-Yam A, Lezmy J, Maguire K, Omand C, Smith M, Andreoni I, Bellm EC, Bloom JS, De K, Groom SL, Kasliwal MM, Masci FJ, Medford MS, Park S, Purdum J, Reynolds TM, Riddle R, Robert E, Ryder SD, Sharma Y, Stern D.   +36 more
europepmc   +1 more source

Asymmetric eROSITA bubbles as the evidence of a circumgalactic medium wind. [PDF]

Nat Commun, 2023
Mou G, Sun D, Fang T, Wang W, Zhang R, Yuan F, Sofue Y, Wang T, He Z.   +8 more
europepmc   +1 more source

From 100 MHz to 10 GHz: Unveiling the spectral evolution of the X-shaped radio galaxy in Abell 3670

Astronomy & Astrophysics
Context. X-shaped radio galaxies (XRGs) are characterised by two pairs of misaligned lobes: active lobes hosting radio jets and the wings. None of the formation mechanisms proposed thus far are able to exhaustively reproduce the diverse features observed among XRGs.
L. Bruno, M. Brienza, A. Zanichelli, M. Gitti, F. Ubertosi, K. Rajpurohit, T. Venturi, D. Dallacasa   +7 more
openaire   +3 more sources

Astronomia ex machina: a history, primer and outlook on neural networks in astronomy. [PDF]

R Soc Open Sci, 2023
Smith MJ, Geach JE.
europepmc   +1 more source

Origin of the double-peaked narrow emission-lines in the optical spectra of X-shaped Radio Galaxies

We investigate the X-shaped radio galaxies (XRGs) with optical double-peaked narrow emission (DPNEL) as potential hosts of dual or binary supermassive black holes (SMBHs). Using a sample of 187 XRGs selected from SDSS and DESI optical spectroscopic surveys, we check the AGN nature of both emission components using the BPT diagnostics of multiple ...
Ghosh, Prajnadipt, Joshi, Ravi, Yang, Xiaolong, Zhang, Yingkang, Gopal-Krishna, Wiita, Paul J., Patel, Ankit, Goyal, Arti, Giri, Gourab, Mondal, Santanu, Negi, Vibhore, Wezgowiec, Marek, Wu, Xue-Bing, Ho, Luis C.   +13 more
openaire   +2 more sources

A VLBA-uGMRT search for candidate binary black holes: study of six X-shaped radio galaxies with double-peaked emission lines

Monthly Notices of the Royal Astronomical Society
ABSTRACT Identifying methods to discover dual active galactic nucleus (AGN) has proven to be challenging. Several indirect tracers have been explored in the literature, including X/S-shaped radio morphologies and double-peaked (DP) emission lines in the optical spectra.
Biny Sebastian, Anderson Caproni, Preeti Kharb, A J Nayana, Arshi Ali, K Rubinur, Christopher P O’Dea, Stefi Baum, Sumana Nandi   +8 more
openaire   +2 more sources

Electromagnetic counterparts to massive black-hole mergers. [PDF]

Living Rev Relativ, 2022
Bogdanović T, Miller MC, Blecha L.
europepmc   +1 more source

The extent of ionization in simulations of radio-loud AGNs impacting kpc gas discs. [PDF]

Mon Not R Astron Soc, 2022
Meenakshi M, Mukherjee D, Wagner AY, Nesvadba NPH, Morganti R, Janssen RMJ, Bicknell GV.   +6 more
europepmc   +1 more source

Little red dots as young supermassive black holes in dense ionized cocoons. [PDF]

Nature
Rusakov V, Watson D, Nikopoulos GP, Brammer G, Gottumukkala R, Harvey T, Heintz KE, Damgaard R, Sim SA, Sneppen A, Vijayan AP, Adams N, Austin D, Conselice CJ, Goolsby CM, Toft S, Witstok J.   +16 more
europepmc   +1 more source

Wide-Field uGMRT band-3 Imaging of the Fields Around X-Shaped radio galaxies

Astronomy & Astrophysics
We present wide-field upgraded Giant Metrewave Radio Telescope (uGMRT) images of the fields around the X-shaped radio galaxies (XRGs) 4C32.25, 4C61.23, and MRC 2011–298 obtained at 400 MHz. The observations are calibrated using the extreme peeling method to account for direction-dependent effects across the field of view, as was previously applied to ...
openaire   +1 more source