RSID: <<2023-02-17T00:31Z MFSK-32 @ 9265000+1500>>

 

Welcome to program 292 of Shortwave Radiogram.

I'm Kim Andrew Elliott in Arlington, Virginia USA.

Here is the lineup for today's program, in MFSK modes as noted:

  1:36 MFSK32: Program preview (now)
  2:43 MFSK32: Proposed planetary system classification
  7:22 MFSK64: It's OK to feed the birds*
13:56 MFSK64: This week's images*
28:12 MFSK32: Closing announcements

* with image(s)

 

Please send reception reports to radiogram@verizon.net

And visit http://swradiogram.net

We're on Twitter now: @SWRadiogram

From New Atlas:

Proposed planetary system classifications suggest ours is the
rarest

By Michael Irving
February 14, 2023

Astronomers have classified planetary systems into four distinct
categories, based on the sizes and arrangements of their planets.
As it turns out, the architecture of our own solar system is the
rarest kind.

Decades of telescopes dedicated to the hunt for worlds around
stars other than our own Sun have yielded more than 5,300 of
these exoplanets so far, contained in 3,910 planetary systems.
With that much data astronomers have been able to classify these
planets into different groups based on their characteristics -
there are rocky planets, gas giants, Super-Earths, mini-Neptunes
and water worlds, among others.

But can planetary systems themselves be classified in similar
ways? And if so, how does our own solar system stack up on a
cosmic scale? Answering those questions was the goal of a new
study by scientists in Switzerland, who examined data from all
853 systems known to contain multiple planets.

From this analysis, the team settled on four main classes that
planetary systems fall into, based on the sizes and arrangements
of their planets: Similar, Ordered, Anti-ordered and Mixed.
Similar systems, the most common arrangement, are those where the
planets are all about the same size - for example, the TRAPPIST-1
system, which contains seven roughly Earth-sized rocky planets.
Ordered systems are those where the inner planets are small and
rocky, and give way to the gas and ice giants in the outskirts.
Our own solar system falls into this group, and the team says
it's the rarest configuration.

Anti-ordered systems are the inverse - the bigger planets appear
closer to the star and get smaller the further out you go. And
finally there are Mixed systems, which don't seem to have any
rhyme or reason to the arrangement of their planets.

So how do planetary systems end up in these different
configurations? Like many things, the team says it's a mix of
"nature and nurture" - it partly depends on the initial
conditions that the system is born from, including the mass of
the disk of dust and gas that forms the planets, and the
abundance of heavy metals in the host star. It also partly
depends on the dynamics of the planets during the system's
lifespan.

"From rather small, low-mass disks and stars with few heavy
elements, 'similar' planetary systems emerge," said Lokesh
Mishra, lead author of the study. "Large, massive disks with many
heavy elements in the star give rise to more ordered and
anti-ordered systems. Mixed systems emerge from medium-sized
disks. Dynamic interactions between planets - such as collisions
or ejections - influence the final architecture."

The more we can learn about other planetary systems, the better
we can understand our place in the universe.

The research was published in two studies in the journal
Astronomy & Astrophysics.

Source: University of Bern

https://newatlas.com/space/planetary-system-classifications/
 

Shortwave Radiogram now changes to MFSK64 ...


 

RSID: <<2023-02-17T00:37Z MFSK-64 @ 9265000+1500>>


This is Shortwave Radiogram in MFSK64

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From AP via Phys.org:

Don't feed the bears! But birds OK, new Tahoe research shows

by Scott Sonner
February 10, 2023

Don't feed the bears! Wildlife biologists and forest rangers have
preached the mantra for nearly a century at national parks like
Yellowstone and Yosemite, and for decades in areas where urban
development increasingly invaded native wildlife habitat.

But don't feed the birds? That may be a different story - at least
for one bird species at Lake Tahoe.

Snowshoe and cross-country ski enthusiasts routinely feed the
tiny mountain chickadees high above the north shore of the alpine
lake on the California-Nevada border. The black-capped birds of
Chickadee Ridge will even perch on extended hands to snatch
offered seeds.

New research from University of Nevada scientists found that
supplementing the chickadees' natural food sources with food
provided in feeders or by hand did not negatively impact them, as
long as proper food is used and certain rules are followed.

"It's a wonderful experience when the birds fly around and land
on your hand to grab food. We call it 'becoming a Disney
princess,'" said Benjamin Sonnenberg, a biologist/behavioral
ecologist who co-authored the six-year study.

But he also recognized "there's always the question of when it is
appropriate or not appropriate to feed birds in the wild."

State wildlife officials said this week they generally frown on
feeding wildlife. But Nevada Department of Wildlife spokeswoman
Ashley Sanchez acknowledged concerns about potential harm are
based on speculation, not scientific data.

This photo provided by the University of Nevada, Reno shows
University of Nevada, Reno student Michelle Werdann feeds a wild
The latest research project under the wings of Professor Vladimir
Pravosudov's Chickadee Cognition Lab established feeders in the
Forest Service's Mount Rose Wilderness and tracked populations of
mountain chickadees at two elevations - both those that did and
didn't visit feeders.

"If we saw increases in the population size or decreases in the
population size, that could mean we were hurting the animals by
feeding them," co-author Joseph Welklin said. "Our study shows
that feeding these mountain chickadees in the wild during the
winter has no effect on their population dynamics."

Sonnenberg said he understood concerns about supplementing food
for wild creatures at Tahoe, where bears attracted to garbage get
into trouble that sometimes turns fatal, and not for humans. The
bears may ultimately be killed because they no longer fear
people. He grew up in Bozeman, Montana, and has fond memories of
grizzly and black bears at Yellowstone National Park where he
learned at an early age "not to intentionally or to accidentally
feed them."

"Feeding wildlife is context-specific and comes with nuance," he
said.

Bear-human conflicts were extremely rare at Tahoe when Ranger
Smith started battling Yogi and Boo-Boo over "pic-a-nic" baskets
at fictional Jellystone Park in the popular cartoon that debuted
in 1960. But between 1960 and 1980 the human population around
Lake Tahoe exploded from 10,000 to 50,000 - 90,000 in the summer.
Peak days now approach 300,000 visitors.

The growth spurred more development encroaching on native bear
habitat, which led some so-called "garbage bears" to become
dependent on unsecured trash for food. In a few cases, wildlife
officials have blamed resulting bear deaths on north Tahoe
residents feeding bears in their backyards.

"Should you feed the bears? Of course not," Sonnenberg said. "But
given the millions of people that are feeding birds around the
world, understanding the impact of this food on wild populations
is important, especially in a changing world."

Mountain chickadees are of particular interest because they're
among the few avian species that hunker down for the cold Sierra
winters instead of migrating to a warmer climate. They stash away
tens of thousands of food items every fall then return to the
hidden treasure throughout the winter to survive.

They're "prolific scatter hoarders and rely on specialized
spatial memory abilities to recover cached food from their
environment during harsh winter months," according to the
findings published last month in the journal Ornithology.

"When they come to your hand and grab a food item," Sonnenberg
said, "if they fly away into the woods and you can't see them
anymore, they are likely storing that food for later."

Their visits to feeders instead of tapping their own stash, the
study said, "may be partially driven by the seemingly
compulsive-like nature of caching behavior, as chickadees will
cache available resources until they are depleted."

The project included scientists from Canada's University of
Western Ontario's Department of Psychology, Kennesaw State
University's Department of Ecology, Evolution and Organismal
Biology in Georgia and the University of Oklahoma's Biological
Survey.

Sanchez said the Nevada Department of Wildlife's concerns include
observations the chickadees are exhibiting a level of tameness
around potential predators - humans - which could make them more
susceptible to other predators in nature.

She also said in an email the number of people hand-feeding the
birds at Chickadee Ridge has increased significantly in recent
years, "which means the odds that somebody will feed them
inappropriate food items or handle them inappropriately has also
increased."

Sonnenberg added in an email the researchers are "not directly
advocating for or against the feeding of chickadees at Chickadee
Ridge."

But "what our results do show is that this extra food does not
cause chickadee populations in the Sierra Nevada to boom
(increase to densities that could be harmful) or bust (decrease
dramatically due to harmful effects)," he wrote.

Anyone feeding the birds should only provide food similar to what
is found in their natural environment such as unsalted pine nuts
or black-oil sunflower seeds, never bread or other human food, he
said.

"And always be respectful of the animal," Sonnenberg said.
"Behave like you're in their house and you're visiting them."


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This is Shortwave Radiogram in MFSK64

Please send your reception report to radiogram@verizon.net

 

This week's images ...

 

Mandarin ducks in Balloch, Scotland. https://t.ly/-YIl ...

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A peppermint goby above yellow star coral off Bonaire.
https://t.ly/PkdP ...

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Tourists release sky lanterns during the Pingxi Lantern Festival,
February 5, Taipei, Taiwan. https://t.ly/_Xwk ...

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A plum tree blossoms as snow falls in the Xiangshui Lake scenic
area in suburban Beijing. https://t.ly/E1mv ...

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A bloom in early spring-like weather in Silver Spring, Maryland.
https://t.ly/SyY_ ...

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Sunrise in New York City, February 9. https://t.ly/7bFY ...

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A snowy morning in Georgetown, Colorado, February 15.
https://t.ly/fr7D ...

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Our painting of the week is "A Moonlit Street Scene" by Wilfred
Bosworth Jenkins (British 1857-1936). https://bit.ly/3lED8JU ...

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Shortwave Radiogram returns to MFSK32 ...




RSID: <<2023-02-17T00:58Z MFSK-32 @ 9265000+1500>>

This is Shortwave Radiogram in MFSK32 ...

 

Shortwave Radiogram is transmitted by:

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and

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Please send reception reports to radiogram@verizon.net

And visit http://swradiogram.net

Twitter: @SWRadiogram or twitter.com/swradiogram

I'm Kim Elliott. Please join us for the next Shortwave
Radiogram.

RSID: <<2023-02-16T02:48Z MFSK-64 @ 5850000+1500>>

This Is A Music Show #199
16 February 2023

0200-0300UTC Thursday on 5850 kHz

via WRMI, Okeechobee USA

***ALSO***

TIAnExpressMS w/ Radio Northern Europe International
via Channel 292 in Germany, mainly on 6070 kHz.

Broadcast various dates/times/freqs. Check the schedule here:

https://www.channel292.de/
https://rnei.org/

----------------------------------------

PLAYLIST

-----

The Ventures - Go-Go Slow

-----

De La Soul - Eye Know
Takanaka - Bay Street Fix

-----

亀井信夫とスペイスメン - アコちゃん
Donnie Iris - I'm A User

-----

Roni Size - Share The Fall (Full Vocal Remix)
Abstract Truth - Get Another Plan (Flytronix Remix Pt.1)
DJ Swift - Space

-----

Mighty Threes - Sata

-----

THIS DATA w/ Bert Kaempfert - Vat 96

-----

Yuri Tashiro - The Look Of Love

----------------------------------------

TIAMS Website:

https://thisisamusicshow.com

Go here for show archives + official shop!

-----

Please send reception reports/comments:

thisisamusicshow@gmail.com

Follow TIAMS:

www.twitter.com/ThisIsAMusicSho/
mastodon.hams.social/@TIAMS

------

Thanks for listening!

--YOUR HOST--


EOM

 

RSID: <<2023-02-16T02:49Z MFSK-64 @ 5850000+1500>>

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