AAS NOVA — Research Highlights 2018

Find out the latest thinking about our universe.
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Identifying Life from Varying Atmospheres

Post by bystander » Sat Jun 23, 2018 4:23 pm

Identifying Life from Varying Atmospheres
NOVA | American Astronomical Society | 2018 Jun 22
Susanna Kohler wrote:
There’s no hiding — changes in Earth’s atmosphere over the seasons are a dead giveaway to the fact that Earth hosts life. Now a new study explores whether we might use atmospheric seasonality like Earth’s to detect life on other planets. ...

Atmospheric Seasonality as an Exoplanet Biosignature - Stephanie L. Olson et al
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Peering Inside the Pillars of Creation

Post by bystander » Thu Jun 28, 2018 1:46 pm

Peering Inside the Pillars of Creation
NOVA | American Astronomical Society | 2018 Jun 27
Susanna Kohler wrote:
On 1 April 1995, Hubble captured one of its most well-known images: a stunning photo of towering features known as the Pillars of Creation, located in the Eagle Nebula just 7,000 light-years away. A new study explores how these iconic columns are influenced by the magnetic fields within them. ...

First Observations of the Magnetic Field inside the
Pillars of Creation: Results from the BISTRO Survey
- Kate Pattle et al
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Investigating Confined Solar Flares

Post by bystander » Thu Jul 05, 2018 4:12 pm

Investigating Confined Solar Flares
NOVA | American Astronomical Society | 2018 Jun 29
Kerry Hensley wrote:
Solar flares are often, but not always, associated with coronal mass ejections. Why do coronal mass ejections accompany some solar flares but not others? ...

Two-stage Energy Release Process of a Confined Flare with Double HXR Peaks - Hao Ning et al
Know the quiet place within your heart and touch the rainbow of possibility; be
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Piecing Together the Light from Colliding Stars

Post by bystander » Thu Jul 05, 2018 4:21 pm

Piecing Together the Light from Colliding Stars
NOVA | American Astronomical Society | 2018 Jul 02
Susanna Kohler wrote:
The recent discovery of GW170817 — the first gravitational-wave detection where we also observed electromagnetic signals — has enabled new studies of merging compact objects. What have we since learned about the radiation that emerges from these collisions? ...

The Diversity of Kilonova Emission in Short Gamma-Ray Bursts - B. P. Gompertz et al
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When Giant Planets Orbit Evolved Stars

Post by bystander » Tue Jul 10, 2018 4:04 pm

When Giant Planets Orbit Evolved Stars
NOVA | American Astronomical Society | 2018 Jul 06
Susanna Kohler wrote:
What happens to planets orbiting around stars that age past the main sequence and evolve into red giants? These enormous reddened stars — our Sun’s fate billions of years from now — may have significant impacts on the planet populations around them. A new study explores these impacts by looking at the orbits of gas giants closely circling evolved stars. ...

Do Close-in Giant Planets Orbiting Evolved Stars Prefer Eccentric Orbits? - Samuel K. Grunblatt et al
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Gaia Identifies a Stellar Gap

Post by bystander » Thu Jul 12, 2018 5:56 pm

Gaia Identifies a Stellar Gap
NOVA | American Astronomical Society | 2018 Jul 11
Susanna Kohler wrote:
Sometimes more-precise measurements are all we need to make new discoveries in old structures! In a new study, data from the Gaia mission has revealed a surprise hidden among main-sequence stars. ...

A Gap in the Lower Main Sequence Revealed by Gaia Data Release 2
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When Stars Run Away

Post by bystander » Fri Jul 13, 2018 5:18 pm

When Stars Run Away
NOVA | American Astronomical Society | 2018 Jul 13
Kerry Hensley wrote:
The high-energy catalogs of the Fermi Large Area Telescope contain more than a thousand gamma-ray detections that have never been connected to a source. Some of these gamma rays could stem from very exotic objects: bow shocks of runaway stars. ...

Possible Association of Two Stellar Bowshocks with Unidentified Fermi Sources - E. Sánchez-Ayaso et al
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A Rapidly Spinning Black Hole with a Warped Disk

Post by bystander » Tue Jul 17, 2018 4:55 pm

A Rapidly Spinning Black Hole with a Warped Disk
NOVA | American Astronomical Society | 2018 Jul 16
Susanna Kohler wrote:
An X-ray telescope recently installed on the International Space Station has been improving our view of distant high-energy sources, one object at a time. Now, this telescope has provided a detailed look at a black hole feeding off its companion star. ...

A NICER Spectrum of MAXI J1535-571: Near-Maximal Black Hole Spin and Potential Disk Warping - J. M. Miller et al
Know the quiet place within your heart and touch the rainbow of possibility; be
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