Two supermassive black holes are on a collision course It's the first time astronomers have ever witnessed the stunning cosmic event.

At the center of the galaxy Markarian 501, there appears to be not just one supermassive black hole, but two. Radio observations over several years suggest that the duo could merge in as short as 100 years. www.popsci.com/science/blac... #radioastronomy #blackholes @popsci.com

The Astropeiler Stockert: A tall concrete construction with a conical base and a large satellite dish on top.

The Astropeiler Stockert A large satellite dish antenna with a metal framework, mounted on a sturdy concrete base against a cloudy sky.

The Astropeiler Stockert Sign reading "Astropeiler Stockert" on the floor next to wooden furniture.

The Astropeiler Stockert. Control panel with dials, knobs, and meters labeled in German, used for adjusting settings and measurements.

And here's the link to the #Astropeiler #Stockert post:

🌍 www.fabriziomusacchio.com/blog/2021-05...

#SpacePhysics #Observatory #Telescope #RadioAstronomy #Astronomy #MPIfR

The large satellite dish of the Effelsberg Radio Telescope, part of the Max Planck Institute for Radio Astronomy

The large satellite dish of the Effelsberg Radio Telescope, part of the Max Planck Institute for Radio Astronomy

The large satellite dish of the Effelsberg Radio Telescope, part of the Max Planck Institute for Radio Astronomy

The Effelsberg Radio Telescope, part of the Max Planck Institute for Radio Astronomy

Here's the link to the Effelsberg post:

🌍 www.fabriziomusacchio.com/blog/2021-05...

#SpacePhysics #Observatory #Telescope #RadioAstronomy #Astronomy #MPIfR

VizieR J/ApJ/960/48

New in the #VirtualObservatory: “ALMA-IM. IX. SiO outflows in massive protoclusters” by Towner A.P.M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/960/48
#MolecularPhysics #RadioAstronomy #InterstellarMedium #Interferometry

Congratulations to Joe Pesce—newly appointed Assistant Director of the NSF NRAO's North American ALMA Science Center (NAASC)—on being named a 2026 Fellow of the American Association for the Advancement of Science (AAAS).

#Astronomy #RadioAstronomy

[Instagram link (about astrophysics)]

THIS is one good usage of names from Tolkien's work.

https://www.instagram.com/p/DW3p04pjK0Q/

#ORCs #RadioAstronomy #astrophysics #Tolkien

How do we measure radio emission? 📡🌌

Brightness → signal strength
Spectral → particle energy
Polarization → magnetic fields

Same signal.
Different spectrum.

#Astrophysics #PlasmaPhysics #GalaxyClusters #RadioAstronomy #ResonantCosmos

We have extended the deadline to this Friday, April 10th, for submitting proposals to the Iberian AtLAST Days

indico.iparcos.ucm.es/event/10/

#AtLAST #Astronomy #RadioAstronomy

Big Data in Astronomy: Surveys, Catalogs, Databases and Archives We present the modern situation in astronomy, where Big Data coming from the Universe put new tasks for catalogizing, storage, archiving, analysis and usage of the scientific information. The two major characteristics of modern astronomy are multiwavelength (MW) studies (from \ga

📄 Big Data in Astronomy: Surveys, Catalogs, Databases and Archives

Quicklook:
Mickaelian, A. M. et al. (2020) · Communications of the Byurakan Astrophysical Observatory
Reads: 0 · Citations: 2
DOI: 10.52526/25792776-2020.6…

#Astronomy #Astrophysics #BlackHoles #RadioAstronomy

How do we measure radio emission? 📡🌌

Surface brightness → signal strength
Spectral index → particle energy
Polarization → magnetic fields

Invisible signal.
Mapped into physics.

#Astrophysics #PlasmaPhysics #GalaxyClusters #RadioAstronomy #ResonantCosmos

A variety of feed horns on top of the Green Bank Telescope

At one of the highest points on the Green Bank Telescope, above the main dish, sit feed horns atop a rotating turret containing the receivers.

📸 Credit: NSF/AUI/NSF GBO

1/3

#astronomy #radioastronomy #nrao #greenbanktelescope

Solar Radio Astronomy - CESRA Solar radio emissions offer unique diagnostic insights into the solar corona. However, their dynamic and multiscale nature, along with variations spanning several orders of magnitude in intensity, pos...

Technical Readiness of MeerKAT for Solar Observations and Initial Science Results by D. Kansabanik et al. www.astro.gla.ac.uk/users/eduard...
#radioastronomy

"An icon of New Mexico, the Very Large Array (VLA) is due for an upgrade. Now years in the making, work on the next-generation antenna is getting ready to roll out."

via @krqe.com

www.krqe.com/news/new-mex...

#NewMexico #RadioAstronomy #ngVLA #VeryLargeArray

New Meteor Detection Software: RMS download on rmob.org A key feature of this software is its integrated satellite filter, specifically developed to minimize false positives by distinguishing genuine meteor echoes from satellite interference
#Radioastronomy
#meteorshower

a grid of 12 plots (4 columns, three rows). Each row represents a frequency that the pulsar is being observed at. The columns are: pulsar profile, frequency vs. pulse phase; time vs. pulse phase; bandpass

A large radio telescope pointed up towards the sky in this webcam image

..... and I'm finished my 8-hour observing run!

Got to finish with another one of my fav millisecond pulsars, PSR J2145-0750. I really like its profile and its one of the ones that is pesky and does not behave as it should!

Idiot pulsars.

Have a good weekend all, over & out!

📡🔭 #RadioAstronomy

a grid of 12 plots (4 columns, three rows). Each row represents a frequency that the pulsar is being observed at. The columns are: pulsar profile, frequency vs. pulse phase; time vs. pulse phase; bandpass

Onto the next zombie star - this is PSR J1744-3144

My nickanme for this one is "Narsil" (from LOTR) because its narrow, slightly jagged profile is good, and because this one is nearly 100% linearly polarized!

It's fun to use this one in polarization work.

#Pulsars #RadioAstronomy

Just had a big RFI (radio freq. interference) surge at the telescope....

ah yes, correlates in time with the humans waking up!

Annoying, but we can zap it out later in post-processing.

The trade off with observing during early hours of morning - signal is good, but sleep is bad!

#RadioAstronomy

NRAO eNews: March 2026 Read the latest news & announcements about NRAO science, science operations, and project status.

#Astronomy community, this month's issue of the NRAO Newsletter is now available! Read here: https://science.nrao.edu/enews/19.3

Learn about upcoming workshops, #ALMA Cycle 13 Call for Proposals, doctoral dissertation + Jansky Fellows spotlights, events at the VLA, and more.

#RadioAstronomy #NRAO

Why do I call the pulsar PSR J1713+0747 the "problem child"?

Well, it kinda threw a tantrum in 2021 and did something that is extremely uncommon for millisecond pulsars to do!

Thread here on my first-ever, first-author paper about this event

📡🔭 #RadioAstronomy #Pulsars

a grid of 12 plots (4 columns, three rows). Each row represents a frequency that the pulsar is being observed at. The columns are: pulsar profile, frequency vs. pulse phase; time vs. pulse phase; bandpass

5 am start here as I take over Murriyang's controls for the next 8 hours.

Am just continuing the observation from the last observer, and guess who it is?!

OLD MATE ..... the problem child .... and it's shining brightly around 1.2 GHz today!

📡🔭

#Pulsars #RadioAstronomy

Solar Radio Astronomy - CESRA During encounter 2 of NASA’s PSP mission there was a large amount of radio activity and, in particular, a noise storm of frequent, small type III bursts from 31 March to 6 April 2019. Our aim is to in...

The active region source of a type III radio storm observed by Parker Solar Probe during encounter 2 by L. Harra et al* www.astro.gla.ac.uk/users/eduard...
#astronomy #radioastronomy

Solar Radio Astronomy - CESRA Solar radio spikes are short duration, narrowband radio bursts that are signature of the acceleration of non-thermal electrons in solar flares. They are observed over a wide range of frequencies from ...

First Frequency-time-resolved Imaging Spectroscopy Observations of Solar Radio Spikes by D. L. Clarkson et al.* www.astro.gla.ac.uk/users/eduard...
#astronomy #radioastronomy

VizieR J/A+A/707/A348

New in the #VirtualObservatory: “AB Aur NOEMA CS 3-2 datacube” by Riviere-Marichalar P. et al.
cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A3...
#ChemicalAbundances #PreMainSequenceStars #RadioAstronomy

Promotional graphic for a Next Generation Very Large Array info session. The event is Monday, April 13 from 5:30-7:30 PM at the Holiday Inn Express & Suites in Alamogordo, NM.

Promotional graphic for a Next Generation Very Large Array info session. The event is Wednesday, April 15 from 5:30-7:30 PM at the Bradbury Science Museum in Los Alamos, NM.

Come learn more and ask questions about the future of astronomy in New Mexico!

The public is invited to join NRAO staff for Next Generation Very Large Array ( #ngVLA ) informational sessions in Los Alamos and Alamogordo.

No registration required. More info ⤵️

#Astronomy #RadioAstronomy #NewMexico

The beam on the Eiffel Tower is like a perfect dipole and extremely slowly rotating pulsar beam at optical wavelengths.

The ones I’ll be observing this Saturday morning are radio waves from pulsars and rotate hundreds of times per second! Like a rapid strobe! 🕶️

#RadioAstronomy

What lights galaxy clusters up in radio? 📡🌌

Black hole jets.
Shockwaves.
Turbulence.

Three sources.
One signal.

#Astrophysics #PlasmaPhysics #GalaxyClusters #RadioAstronomy #ResonantCosmos

In the past when I've observed, we've done some fun mini AMAs on here, so if you have any #RadioAstronomy or #pulsar questions, feel free to shoot them through from now or during the observing session and I'll do my best to answer them for you!

Can be anything you want to know!

📡🔭

A large radio dish, tilted at a 45-degree angle and pointing upwards and left towards the sky. It is daytime. There are three flags flying on poles in the foreground. Surrounding the antenna is grass and several trees.

I've got a big 8-hour (5am-1pm AEDT) observing shift coming up on Saturday morning, using the best telescope in the world - Murriyang!

Will be tracking several pesky pulsars - been a little while since my last observing block, so looking forward to seeing my pulsar friends!

📡🔭 #RadioAstronomy

dirty beam to clean image pipeline is so unhinged if you think about it. you’re inverting fourier transforms until the sky talks. 🔭
#radioastronomy

Solar Radio Astronomy - CESRA Solar type II bursts are sporadic emissions characterized by their narrow bandwidth and slow frequency drift in dynamic spectra ( Nelson & Melrose, 1985 ; Vršnak & Cliver 2008 ; Nindos et al. 2008 ; P...

Searching for optical/EUV counterparts of type IIs in a complex metric burst 
by Costas Alissandrakis et al.* www.astro.gla.ac.uk/users/eduard...
#astronomy #radioastronomy