Tag: neutron stars

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PULSAR SHOCKER—SCIENCE’S BIGGEST BLIND SPOT!

Why does Six-Sigma not apply to pulsar theories?

Pulsars have puzzled scientists for over 50 years, and many mysteries remain. Some wonder if these cosmic signals could actually be alien beacons rather than natural objects.

You’ve heard of neutron stars and their eerily precise lighthouse flashes of radio waves. But did you know the world’s leading experts openly admit they still don’t know how—or even why—pulsars pulse? Despite more than five decades of dedicated research since their discovery, fundamental aspects of the mechanisms that govern pulsars remain incompletely understood.

WHAT THEY WON’T TELL YOU

• 50 Years of “Mystery Science”
– Pulsars were discovered in 1967 by Jocelyn Bell Burnell.
– The first pulsars were named “LGM” for “Little Green Men”,
because they resembled deliberate intelligent signals from aliens.
– The discovery was kept a secret for two years, until a “natural” explanation could be found.
– Yet top reviews concede: “No consensus on how pulsars make coherent radio beams.”
– Even their heavyweight magnetosphere models are “pure speculation,” say the academics.

Jocelyn Bell Burnell discovered Pulsars in 1967
Jocelyn Bell Burnell discovered Pulsars in 1967

• Energy “Conversion” Conundrum
– How does a spinning neutron star turn its spin into light and X-rays?
– Experts shrug: “We don’t know where particles get accelerated… or how.”

• Interior Secrets Locked Tight
– The neutron-star Equation of State? A “well-kept secret,” even on Wikipedia.
– We can’t recreate these ultra-dense conditions on Earth—so we’re flying blind.

THE BIG QUESTION SETI WON’T ASK

If we’re this stumped by “natural” objects, could some pulsars actually be artificial beacons—designed by a super-advanced Kardashev Type III civilization? Imagine harnessing a stars energy to craft perfect, long-range lighthouses! Isn’t this a concept that the Kardashev Scale proposes?

Yet SETI protocols dismiss the idea outright:
• They focus on faint, homely radio signals—never megastructures beaming across the Milky Way.
• They’ve never seriously tested whether pulsar “noise” could be cosmic Morse code.

WHAT IF SOME PULSARS ARE ETI LIGHTHOUSES?

– Perfect timing, colossal power output, pinpoint beams… sounds like engineered tech!
– A K-III society could be “pinging” planets for millennia, and we’ve assumed it’s just physics playing tricks.

CALLING ALL STAR HUNTERS

It’s time to break the dogma. We need to:
1. Re-examine pulsar data for hidden patterns or intentional modulation.
2. Expand SETI’s search to include high-power, pulsed signals.
3. Admit our ignorance—and embrace wild ideas to solve these cosmic riddles.

Until we dare to ask whether pulsars are aliens’ calling cards, we’ll remain stuck in the dark—waiting for E.T. to ring a bell we refused to check. Isn’t it time someone blew the whistle on astrophysics’ biggest oversight?

Scientists on the Limits of Pulsar Knowledge

Beyond the specific unsolved problems within subfields of pulsar research, there are numerous instances where scientists make overarching statements explicitly acknowledging the incomplete state of current knowledge regarding these enigmatic objects.

Several key publications and resources directly state the limitations in our understanding of pulsars:

Beskin, Chernov, Gwinn, & Tchekhovskoy (2015):

In their review “Radio Pulsars,” these authors plainly state, “Almost 50 years after radio pulsars were discovered in 1967, our understanding of these objects remains incomplete.” This is a clear and high-level admission of the persistent gaps in knowledge from experts summarizing the field.

Hankins, Rankin, & Eilek (2009):

The white paper “What is the Physics of Pulsar Radio Emission?” opens with the frank assessment: “Despite much careful theoretical and observational effort, the details of how these rapidly rotating neutron stars radiate are still a mystery.” While focused on radiation, this statement implies broader difficulties in understanding the core processes.

Contopoulos, Kalapotharakos, & Kazanas (2014):

In “A new standard pulsar magnetosphere,” the authors remark, “Though pulsars were discovered almost fifty years ago, they still remain mysterious stellar objects.” This general statement encapsulates the enduring enigmatic nature of pulsars.

NASA on PSR B0943+10:

When discussing the “puzzling pulsar” PSR B0943+10, a NASA resource notes that “astronomers… aren’t sure how the particles get stripped from the surface of the star and accelerated to high energies”. The observation of its inverse radio/X-ray pulsing “reignited debate,” indicating that any prior consensus on such emission behavior was either absent or fragile and that existing models were insufficient.

“Pulsar Electrodynamics: an unsolved problem”:

The very title of a research area or a specific paper can be telling. While there is a paper on this topic, the broader identification of “Pulsar Electrodynamics” as “an unsolved problem” is a direct admission of ongoing challenges. The source itself discusses unresolved issues like “charge starvation” and “current starvation” in electrodynamic models, implying these are areas not fully settled.

The Unknown Equation of State (EoS):

A “Well-Kept Secret”
A critical unknown is the Equation of State (EoS) of matter at these supranuclear densities. The EoS describes the relationship between pressure, density, and temperature, and it dictates the macroscopic properties of the neutron star, such as its radius for a given mass and its maximum possible mass.

Neutron star equation of state, https://www.sciencedirect.com/science/article/abs/pii/S1387647310000564
Neutron star equation of state, https://www.sciencedirect.com/science/article/abs/pii/S1387647310000564

Multiple sources unequivocally state the current lack of knowledge. Wikipedia’s entry on Neutron Stars, often reflecting expert consensus, asserts: “The equation of state of neutron stars is not currently known.” The entry elaborates that this uncertainty arises because the extreme densities are impossible to replicate in terrestrial laboratories, and theoretical modeling must incorporate General Relativity as well as complex aspects of Quantum Chromodynamics (QCD), potential superconductivity, and superfluidity of nuclear matter. Understanding the EoS is described as a “major unsolved problem in fundamental physics.”

This sentiment is strongly echoed in the scientific literature. A 2017 review by Chamel et al., “The physics of the neutron star crust,” notes that while the physics of the outer crust is relatively better understood, “the structure of the matter in neutron star cores and in particular its equation of state remain the well-kept secret of neutron stars”. The inability to definitively determine the EoS means that fundamental parameters, such as the precise upper mass limit for neutron stars before they collapse into black holes (the Tolman-Oppenheimer-Volkoff limit), remain uncertain, with theoretical estimates varying.

SIX-SIGMA:

Scientific Theories: When a theory encounters contradictory evidence or fails to explain a new observation, it is not a “defect” in the scientific process. Instead, it signals that the theory may be incomplete, incorrect under certain conditions, or in need of refinement. Such discrepancies are essential for scientific progress, often leading to new hypotheses or even paradigm shifts. This mindset may be exactly what’s needed to advance our understanding of pulsars.

References:

Are Radio Pulsars Extraterrestrial Communication Beacons?
https://www.researchgate.net/publication/264785777_Are_Radio_Pulsars_Extraterrestrial_Communication_Beacons

Pulsar Positioning System: A quest for evidence of extraterrestrial engineering
https://arxiv.org/abs/1704.03316

A 4–8 GHz Galactic Center Search for Periodic Technosignatures
https://iopscience.iop.org/article/10.3847/1538-3881/acccf0

‘Unlike anything we have seen before’: Astronomers discover mysterious object firing strange signals at Earth every 44 minutes, May 28, 2025
https://www.livescience.com/space/unlike-anything-we-have-seen-before-astronomers-discover-mysterious-object-firing-strange-signals-at-earth-every-44-minutes

Chameleon pulsar takes astronomers by surprise, 19 February 2013
https://observatoiredeparis.psl.eu/chameleon-pulsar-takes-astronomers-by-surprise.html

Black hole blazar changes direction and now points its jet towards Earth
An inexplicable change of course
https://ras.ac.uk/news-and-press/research-highlights/galaxy-changes-classification-jet-changes-direction

(FRINGE) Decoding the Message of the Pulsars: Intelligent Communication from the Galaxy
https://www.amazon.com/Decoding-Message-Pulsars-Intelligent-Communication/dp/1591430623

Beskin, V. S. (2018). Radio pulsars. Physics-Uspekhi, 61(7), 655–686.

Hankins, T. H., Rankin, J. M., & Eilek, J. A. (2009). What is the Physics of Pulsar Radio Emission? Astro2010: The Astronomy and Astrophysics Decadal Survey, Science White Papers, no. 120.

Contopoulos, I., Kalapotharakos, C., & Kazanas, D. (2014). A new standard pulsar magnetosphere. Monthly Notices of the Royal Astronomical Society, 443(1), L45–L49.

NASA. (2013, October 23). NASA’s Chandra and XMM-Newton Find Puzzling Pulsar. NASA Missions.

Petri, J. (2019). Pulsar electrodynamics: an unsolved problem. Journal of Plasma Physics, 85(5), 15850501.

Chamel, N., Fantina, A. F., & Zdunik, J. L. (2017). The physics of the neutron star crust. In The Physics and Astrophysics of Neutron Stars (pp. 57-95). Springer, Cham.

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Galway Man’s Call to Nobel Laureate Sparks Reflection on Pulsars and the Search for Extraterrestrial Intelligence

In 1985 I was living in Galway, on the west coast of Ireland. I regularly raided the local library in Augustine Street for reading material. It no longer looks like this, but I remember walking up the stairs on the left:

Old Galway Central Library, Augustine Street, from memory

The Mysteries of Pulsars Capture My Imagination

There, I discovered a book about pulsars. As I read, I was struck by the remarkable characteristics of these cosmic phenomena—they emitted incredibly regular radio pulses, seemingly ticking like celestial clocks. Something about their precise periodicity raised a suspicion in my mind: Could these signals be of artificial origin? The idea gnawed at me. It seemed almost too perfect, too synchronized, to be purely natural.

Antony Hewish in front of  4.5-acre array, image by Cavendish Laboratory, University of Cambridge.

Delays and Doubts: The Scientific Community’s Caution

What puzzled me even more was the fact that the researchers who first detected pulsars waited nearly two years before publishing their findings. When they finally did, they explained the regular radio transmissions as the result of some natural astrophysical process—perhaps rapidly spinning neutron stars or some other exotic object. But I couldn’t shake the feeling that something was being hidden, or at least not fully explored. Why delay the publication? Why rush to explain away the strange signals with a natural cause, when they could just as easily be a message—or evidence—of intelligent life?

First Observation Of Pulsar, image by Cavendish Laboratory, University of Cambridge.

A Personal Mission: Reaching Out to a Nobel Laureate

I found myself unable to let go of the thought. I decided I had to try and get some answers directly from someone who knew the science firsthand—Professor Antony Hewish himself, the Nobel laureate who played a key role in the discovery of pulsars.

The walk to the phone booth on Eyre Square was not long—just a few minutes—but to me, it felt like a journey into the unknown. I passed by the familiar sights: the cobblestone streets, the bustling cafés, and the distant clang of the clock tower. The square was busy with people, their conversations and footsteps creating a constant hum. I could feel the cool breeze on my face, carrying the faint smell of brewing coffee from nearby cafés, mingling with the crisp air of a typical Irish day.

Pádraic Ó’ Conaire statue on Eyre Square, Galway

Making the Call: Asking the Expert About Artificial Origins

As I approached the square, I paused briefly to steady my breathing. I reached into my pocket, clutching the handful of Irish pound coins I had carefully gathered for this purpose. I looked at the phone booth—a small, glass-panelled box standing at the corner of the square, slightly worn but functional. Its faded paint and the faint smell of old metal reminded me of countless moments of waiting and hope.

I stepped inside, feeling the cool metal of the door handle against my hand. The interior was dimly lit, with the faint glow of the coin slot and dialing pad. I took a moment to collect myself. The hum of the city outside seemed to fade into the background as I lifted the receiver and inserted the coins one by one into the slot, hearing the satisfying clink as they dropped into place.

The phone was a rotary-style model, but it worked—reliable and straightforward. I stared at the dial pad, my fingers trembling slightly as I entered the number for the Cavendish Laboratory in Cambridge. The line was long-distance, and I had only a limited amount of coins. I whispered a quiet prayer that the call would go through.

The Interview

Finally, I heard the connection click. A calm, measured voice answered.

Antony Hewish on the phone (AI generated)

“Hello?”

“Professor Hewish?” I asked, trying to keep my voice steady.

“Yes, speaking,” came the reply.

I hesitated for a moment, my mind racing with questions. Then I blurted out, “I’m calling to congratulate you on the discovery of pulsars.”

There was a brief pause, and I could almost hear him smiling on the other end of the line.

He thanked me politely, then I took a deep breath and asked, “I find the subject absolutely fascinating, and I was wondering—are you absolutely certain that pulsars are not of artificial origin?”

He responded with quiet confidence, “Yes, I am certain.”

And then he proceeded to explain, his voice steady and reassuring:

“Pulsars are fascinating objects. They are highly magnetized, rapidly spinning neutron stars—remnants of massive stars that have gone supernova. As they rotate, their intense magnetic fields funnel particles toward their magnetic poles, which act like cosmic lighthouse beams. When these beams sweep past Earth, we detect them as highly regular radio pulses.”

Reflections Under the Galway Sky

I listened intently, my mind swirling with his explanations—ones I’d heard before, yet they only deepened my curiosity. I asked again, perhaps more insistently:

“And you are 100% sure that pulsars are not of artificial origin?”

Hewish chuckled softly on the line, “Yes, absolutely certain.”

I thanked him for his time, and before used up all my coins, I ended the call. Stepping back onto the street, I looked up at the grey, cloudy sky, pondering the vastness of space and the mysteries it still held. The conversation left me with a lingering question: could we someday truly find signs of intelligent life out there?

One Second of Error in 30 Million Years

The universe’s most precise timekeepers—the most stable pulsars—are so remarkably accurate that they would drift by only a single second over tens of millions of years. Their stability rivals—and in some respects even surpasses—that of our most advanced atomic clocks.

The most stable known millisecond pulsar, designated PSR J1713+0747, exemplifies this extraordinary precision. Its rotational period is so consistent that it would accumulate an error of just one second after approximately 30 million years.

When we talk about the superiority of pulsars as cosmic clocks, we’re referring to their ability to keep perfect time over millennia—far beyond the reach of any human-made clock. Engineers can build clocks that lose only one second in 300 billion years, but such devices are fragile, often breaking down within a few decades. Pulsars, on the other hand, can continue their steady ticking for billions of years, offering an unmatched cosmic standard of time.