Nov
13
2020

The past, present, and future of r-process enhanced stars. (Opens in a new window)

IReNA Online Seminar

Seminars

Terese Hansen

Texas A&M University

A small fraction of old, metal-poor stars exhibits large enhancements in elements produced in the rapid neutron capture (r-)process. Their chemical composition, mapped through detailed abundance analysis, is a direct fingerprint of the elements produced in the stellar generation before them. This makes them excellent laboratories for studying the r-process. The first r-process enhanced star was discovered over 30 years ago. Since then, about 30 highly r-process enhances stars have been found in the Milky Way halo.

Oct
16
2020

Nucleosynthesis and observational evidences of magneto rotational driven supernovae (Opens in a new window)

IReNA Online Seminar

Seminars

Mortiz Reichert

TU Darmstadt

Abstract: About half of the heavy elements in our Universe are synthesized by one process, the rapid neutron capture process (r-process). This process requires extreme and violent environments that achieve the necessary neutron-rich conditions. Neutron star mergers and magneto rotational driven supernovae are promising candidates to host the r-process. We investigate the r-process from an observational as well as a nucleosynthesis point of view.

Oct
02
2020

Galactic archeology and the origin of the elements (Opens in a new window)

IReNA Online Seminar

Seminars

Chiaki Kobayashi

University of Hertfordshire

Abstract: Galactic chemical evolution (GCE) can provide stringent constraints not only on nuclear astrophysics but also on the formation and evolutionary history of the Milky Way itself, through an approach called Galactic archeology.

Sep
04
2020

Core-Collapse Supernovae: From Neutrino-Driven 1D Explosions to Light Curves and Spectra (Opens in a new window)

IReNA Online Seminar

Seminars

Sanjana Curtis

North Carolina State University

Abstract: The number of observed core-collapse supernova lightcurves is growing every day, providing valuable clues about progenitors, stellar evolution, the explosion mechanism, the nuclear equation of state, nucleosynthesis, and the formation of neutron stars and black holes. However, interpreting electromagnetic observables correctly is a formidable challenge, one that requires detailed and accurate theoretical modeling.

Aug
21
2020

New equations of state constrained by nuclear physics, observations, and high-density QCD calculations (Opens in a new window)

IReNA Online Seminar

Seminars

Sabrina Huth 

TU Darmstadt

Abstract: We present new equations of state for applications in core-collapse supernova and neutron star merger simulations. We start by introducing an effective mass parametrization that is fit to recent microscopic calculations up to twice saturation density. This is important to capture the predicted thermal effects, which have been shown to determine the proto-neutron star contraction in supernova simulations.

Jul
13
2020

POSTPONED - Taking the Temperature: Statistical Nuclear Physics for Astrophysics and Applications (T3) (Opens in a new window)

Ohio University, Athens, Ohio

Workshops & Conferences

Statistical estimates of nuclear reaction rates are essential ingredients for astrophysical model calculations, e.g. r-process nucleosynthesis in neutron star mergers, and nuclear applications, e.g. next generation nuclear reactor performance. Rate calculations require experimental or theoretical constraints for nuclear properties such as level densities (temperature), gamma-strength functions, particle optical potentials, and level spin distributions.

Jul
08
2020

A Celebration of Margaret Burbidge (Opens in a new window)

Online

Workshops & Conferences

Please join us on July 8th 2020 from 1:00-3:00 EDT for an online symposium to honor the late pioneer Eleanor Margaret Burbidge. This event will celebrate her life and science through short talks from her colleagues and collaborators as well as researchers who have benefited from her trailblazing and scientific insights.

Speakers include:
 

Megan Donahue - Michigan State University and past president of AAS

George Fuller - University California, San Diego

Anneila Sargent - California Institute of Technology

Jul
01
2020

IReNA FA1 Stellar Burning Virtual Workshop Series (6/10, 6/17, 6/24, 7/1, 7/2) (Opens in a new window)

Online

Workshops & Conferences

This virtual workshop is organized within FA1 and consists of a series of 4 seminars. The purpose is to build and strengthen international collaborations in nuclear astrophysics issues related to stellar burning (broadly defined). The structure will take advantage of the online format, taking place for 2-hour sessions each week for four weeks. The first hour of each session will consist of three 20-minute talks, while the second hour will be an open discussion.

Jun
22
2020

R-matrix Online Talks (Opens in a new window)

Online

Workshops & Conferences

As the 2020 R-matrix workshop on methods and applications has been postponed until 2021, we have put together a condensed online meeting via zoom for interested participants. A broad range of topics will still be covered, including both experimental and theory endeavors related to R-matrix. The online workshop will take place on Monday June 22, from 12:00 to 15:00 EST. There will be three one-hour sessions that will consist of a series of five to six short 5-minute talks, starting at the top of each hour.

Jun
19
2020

A halo of chemically primitive stars around an ancient dwarf galaxy. Online Seminar by Ani Chiti (MIT) (Opens in a new window)

IReNA Online Seminar

Seminars

The Milky Way is surrounded by dozens of ultra-faint dwarf galaxies. These systems are the remnants of the earliest galaxies, and spectroscopy of their stars thereby reveals the elements produced by chemical evolution in a primitive, self-contained environment. Previous spectroscopic studies, however, had largely been limited to stars within the core of these galaxies (~2 half-light radii) due to the sparseness of their distant stars.

Jun
06
2020

Art 2 Science at home for families - Toys from home chemicals (Opens in a new window)

YouTube link coming soon

Outreach

Start time: 10 am

Live stream details coming soon

In this activity, we'll combine 4 common ingredients in 3 different ways to make things to play with. Then we'll explore experiments that could help us make our new toys even more stretchy or bouncy.

You will need:

  • Water
  • Cornstarch
  • Glue
  • Borax
  • Something to mix in (cup, bowl, baggie)
  • Something to stir with (spoon, stick, hand)
Jun
05
2020

Coulomb dissociation of 16O into 4He and 12C featuring Kathrin Gobel (Opens in a new window)

IReNA Online Seminar

Seminars

Abstract:

The fusion reaction of carbon and helium to oxygen is the key to understanding the evolution of stars and the relative abundances of both elements. The reaction rate of 12C(a,g)16O has to be known with an uncertainty of lower than 10% at a center-of-mass energy of 300 keV during Helium burning conditions. So far, experiments have studied the reaction down to about 1 MeV.

May
29
2020

The Art of Becoming a Better Mentor and Mentee (Pt. 2 of Series) (Opens in a new window)

IReNA Online Seminar

Seminars

The Seminar will begin at 2pm EST Online Seminar featuring Donna Dean (American Chemical Society).

Abstract:

In the second webinar, mentoring approaches will be addressed for both mentors and mentees.  Factors that may impact the mentoring relationship and key topics and questions for mentoring discussions will be covered.

The content of each webinar should help participants reflect on past experiences and understand how they can build and sustain more effective mentoring relationships in the future. 

May
22
2020

Developing Strong Mentoring Relationships (Pt. 1 of Series) (Opens in a new window)

IReNA Online Seminar

Seminars

The Seminar will begin at 2pm EST Online Seminar featuring Donna Dean (American Chemical Society).

Abstract:

The first webinar will focus on tools, techniques, and strategies to seek out appropriate mentors for strong mentoring relationships. . The do's and don'ts involved for mentees and mentors will be covered.  

The content of each webinar should help participants reflect on past experiences and understand how they can build and sustain more effective mentoring relationships in the future. 

May
18
2020

POSTPONED - Frontiers in Nuclear Astrophysics 2020 (Opens in a new window)

Embassy Suites, South Bend, IN

Workshops & Conferences

This will be the tenth in a series of former JINA and now JINA-CEE meetings that brings together JINA-CEE participants, collaborators, and other interested researchers in nuclear physics, astronomy, and astrophysics to discuss progress and future directions related to the understanding of the origin of the elements and neutron stars.

Organizing Committee:

Sebastian Aguilar, University of Notre Dame