<div dir="ltr"><div>Dear colleagues,<br><br>We are pleased to announce the next ISWI Webinar of 2025 by <b>Dr. Bea Gallardo-Lacourt </b> scheduled for<b> July 30th, 2025 at 3 PM Central European Time (9 AM EDT; 7:30 PM IST</b>).<br>To watch past Webinars, please check the following link: <a href="https://cdaw.gsfc.nasa.gov/webinars/ISWI/"> https://cdaw.gsfc.nasa.gov/webinars/ISWI/</a><br>Remember to register for the virtual seminar by sending an email to: <a href="mailto:iswisupport@bc.edu">iswisupport@bc.edu</a>. Please include “ISWI Seminar Registration” in the subject line. There is a limit of 300 participants, so please register your interest as soon as possible. The MS Teams link will be sent to registered participants 2 days before the event.<br><br>With kind regards,<br><br>Graciela Molina<br>on behalf of the ISWI Seminar Committee<br><a href="https://iswi-secretariat.org/home-page/organization/iswi-webinar-committee/">https://iswi-secretariat.org/home-page/organization/iswi-webinar-committee/</a><br> <br>***********************************************<br><u>Title:</u> From Discovery to Insight: Understanding STEVE and Its Relevance to Space Weather<br>Speaker: Dr. Bea Gallardo-Lacourt<br>NASA/GSFC<br><br><u>Abstract:</u><br>The aurora is among the most captivating and scientifically rich natural phenomena observed in the night sky, typically occurring in the polar regions within a zone known as the auroral oval. This region hosts a range of visually striking and physically complex structures. Just equatorward of this lies the subauroral region—an area historically considered less visually dynamic but nonetheless critical to magnetosphere-ionosphere-thermosphere coupling. This view was upended by the discovery of a striking optical phenomenon: STEVE (Strong Thermal Emission Velocity Enhancement). Characterized by a narrow, purplish-white arc extending across the sky, STEVE is not a traditional aurora and originates in the subauroral ionosphere.<br>First brought to scientific attention through observations by citizen scientists, STEVE has rapidly become a focal point of interest for both the public and the research community. Its occurrence highlights previously underexplored subauroral processes and raises new questions about energy transfer and particle dynamics in near-Earth space.<br>This seminar will explore what we currently know about STEVE, review recent multi-instrument findings—including those from ground-based imagers, satellites, and citizen scientist reports—and identify key open questions. We will also examine the potential space weather implications of STEVE, particularly as they relate to ionospheric dynamics, subauroral electric fields, and the broader coupling between the magnetosphere and ionosphere.<br clear="all"></div><div><br></div><div><img src="cid:ii_mdcatza90" alt="ISWI Seminar Series (4).png" width="542" height="542"><br></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>-------------------------------------------</div><div><div><font face="times new roman, serif"><b>Dra. María Graciela Molina</b><br>Prof. Asociada FACET-UNT / Associate Professor FACET -UNT </font></div><div><span style="font-family:"times new roman",serif">Inv. Adjunta CONICET / Researcher CONICET</span></div><div><span style="font-family:"times new roman",serif">Investigadora Asociada INGV/ Associated researcher INGV</span></div><div><span style="font-family:"times new roman",serif">President of ALAGE (</span><font face="times new roman, serif"><a href="https://alage.org/" target="_blank">https://alage.org/</a></font><span style="font-family:"times new roman",serif">)</span></div><div><span style="font-family:"times new roman",serif"><br></span></div><div><span style="font-family:"times new roman",serif">Av. Independencia 1800, </span><span style="font-family:"times new roman",serif">Tucumán - Argentina</span><br></div><div><font face="times new roman, serif">
Tel: +54-381-4364093 (ext.7765)<br><a href="mailto:gmolina@herrera.unt.edu.ar" style="font-style:italic" target="_blank">gmolina@herrera.unt.edu.ar</a> /</font></div><div><font face="times new roman, serif"><a href="mailto:m.graciela.molina@gmail.com" target="_blank"><i>m.graciela.molina@gmail.com</i></a></font><br></div></div></div></div></div></div></div></div></div></div></div></div>