26 Oct
2023
26 Oct
'23
4:06 p.m.
Dear all,
I forgot to mention at the last meeting that there is a request to add
an external member to the LS5039 task group: Hiroki Yoneda, postdoc at
the University of Würzburg, Germany.
This should be approved by the Astrophysics Department if I understand
the procedures correctly. Jacco or Stefan, does one of you approve this?
A mail was circulated to the Stellar WG proposing this, I supported it,
and nobody replied or contacted me with any concerns. Here is the mail:
Dear All,
I would like to suggest to accept Hiroki Yoneda as an external contributor for the
project on study of LS5039 with HESS. I know Hiroki since he was PhD student in University
of Tokyo, and since then he was very actively working on multiwavelength study of LS5039.
In particular, he had lead observational papers on X-ray and Fermi/LAT analysis. Moreover,
in 2018-2020 he was member of HESS collaboration and got some experience with analyzing
H.E.S.S. data. I'm sure that his contribution will help to advance this quite a
delayed project. In addition to Hiroki's exceptional expertise in MWL study of this
source, I would like to mention that Hiroki was leading a paper in which one reported on
possible X-ray pulsation from the system for the first time. Although this result was
criticized for its low significance, there is an important part of knowledge that Hiroki
gained from this work -- he had studied in detail all the available orbital solutions for
this binary system. I expect that his understanding of this aspect will help to resolve
the apparent disagreement between the SUPC spectrum obtained with the new analysis and the
one published in HESS 2006 paper.
All the very best,
Dmitry
--
Dmitry Khangulyan <d.khangulyan(a)rikkyo.ac.jp>
We will have another request soon because Guillem wants to add two
external collaborators on the J1832 binary project (who were also
co-authors on the previous HESS publication on this source).
Best,
Jonathan