<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>
<p>A toda la comunidad, <br>
</p>
<div class="moz-forward-container">
<div class="moz-forward-container">
<div class="moz-forward-container">
<p>les recordamos que mañana miércoles 27 de septiembre a las
13h, en el Salón Meridiano, se brindará la siguiente charla
en el marco de los Seminarios de la FCAG: <b>"</b><b>Follow-up
of Gravitational Waves and explosive transients: Optimized
strategies and prospects for novel discoveries</b><b>"</b>.<b>
</b>La misma estará a cargo del<b> Dr. Clécio R. de Bom (</b><b>Centro
Brasileño de Pesquisas Fisicas -CBPF- Brasil)</b>,<b> </b>profesor
invitado por la Dra. Analía Smith Castelli. A continuación
les dejamos el resumen y los datos de conexión para aquellos
que no puedan acercarse al Salón Meridiano.</p>
<div><b>Resumen: </b>Transient astrophysical phenomena has a
range of interest that goes trough different fields of
astrophysics and cosmology and are one of the most
interesting subjects in time-domain and multi-messenger
astronomy. Those fields has undergone a revolution over the
past years. With the detection of an electromagnetic
counterpart to the gravitational wave (GW) event GW170817
from a binary neutron stars merger, new techniques and
resources to study astrophysical transients in the
multi-messenger context have increased.Once in its design
sensitivity, the current LIGO-Virgo-KAGRA (O4) season is
expected to explore ∼7x more detections of Binary Neutron
star (BNS) events than O3. EM follow-up of many O4 events
should require telescopes with limited Target-of-Opportunity
(ToO) availability.<br>
<br>
We present the S-PLUS Transient Extension Program (STEP): a
explosive transient survey conducted in the Southern
Hemisphere using data from the Southern Photometric Local
Universe Survey (S-PLUS) Main Survey. Additionally, We
address the problem of optimally identifying all kilonovae.
We optimize our strategy for kilonova confirmation while
minimizing telescope time. For a wide range of kilonova
parameters, corresponding to a fainter, redder kilonova
compared to GW170817/AT2017gfo we find that the discovery
probability with the DECam is ∼80% at the nominal BNS
gravitational wave detection limit for O4, a ∼30%
improvement compared to the O3 strategy. For AT2017gfo-like
kilonova, we find ∼90% probability out to 330 Mpc.<br>
<br>
Furthermore, as most expected events are Binary Black Holes,
we explore the possibility of Standard Sirens in association
with AGN flares. Our formalism requires GW localization area
monitoring only without needing ToO spectra since we don't
require identifying the host of each BBH merger. Thus, a
hybrid method between bright and dark sirens. We simulate
O4 season and derive the expected constraints in H_0,
\Omega_m, and $w$.<br clear="all">
<div><b style="font-weight:normal;"
id="docs-internal-guid-84bbdb09-7fff-3b80-37a8-3bd0810a2176">
<p dir="ltr"
style="line-height:1.3800000000000001;text-align:
justify;margin-top:0pt;margin-bottom:0pt;"><b><br>
</b></p>
<p dir="ltr"
style="line-height:1.3800000000000001;text-align:
justify;margin-top:0pt;margin-bottom:0pt;"><b>Datos de
conexión:</b> </p>
</b></div>
</div>
<b style="font-weight:normal;"
id="docs-internal-guid-84bbdb09-7fff-3b80-37a8-3bd0810a2176">
</b>
<div><b style="font-weight:normal;"
id="docs-internal-guid-84bbdb09-7fff-3b80-37a8-3bd0810a2176">
</b></div>
<div>Unirse a la reunión zoom: <a
href="https://us02web.zoom.us/j/89642687970"
class="moz-txt-link-freetext" moz-do-not-send="true">https://us02web.zoom.us/j/89642687970</a>
</div>
<div>ID de reunión: 896 4268 7970</div>
<div>Código de acceso: 526656</div>
<div><br>
</div>
<div><b>A fin de reducir el uso de residuos plásticos, les
solicitamos que se acerquen con sus propias tazas para el
café. </b> </div>
<div><font face="Helvetica, Arial, sans-serif"><br>
</font></div>
<div dir="auto">Aunque este seminario será en formato híbrido,
esperamos contar con su presencia.</div>
<div dir="auto"><br>
</div>
<div dir="auto">Atentamente, <br>
</div>
<p>Secyt-FCAG<br>
</p>
<p><br>
</p>
<div class="moz-forward-container"><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
</div>
</div>
</div>
</div>
</body>
</html>