!
Welcome!
Welcome to issue 6 of the e-
MERLIN newsletter. We will be
publishing e-MERLIN-related
news and science highlights,
including calls for proposals,
adverts for summer schools and
links to e-MERLIN partners like
the EVN and ORP. If you would
like to contribute to the e-MERLIN
newsletter, please get in touch at:
emerlin.support@jb.man.ac.uk "
"
ERIS 2024 in Granada -
register now!
The 10th European Radio
Interferometry School (ERIS) will
be held in Granada, Spain, from
Monday 30th September to
Friday 4th October 2024. Running
every two years, ERIS provides a
complete overview of radio
interferometry from the theoretical
basics and fundamentals, to
hands-on sessions to reduce
data. It also includes advanced
topics such as polarisation, mm-
VLBI and spectral line analysis.
Included in the school is a trip to
the IRAM-30m telescope.
Registration closes on Friday 10th
May 2024 and there is space for
80 participants. #
All of the information for the
school can be found on the event
website, here. #
Illuminating AGN and star formation
activity with the CANDELS survey
Large survey fields provide excellent hunting grounds
for extragalactic sources. The VLBA CANDELS
GOODS-North field is one particularly rich deep survey
field. Observations with the VLBA, EVN, e-MERLIN and
VLA enable a multi-resolution view of extragalactic
sources, yielding robust diagnostics of the contributions
of AGN activity and star formation in individual sources.#
By using e-MERLIN and VLBI arrays, most of the
extended emission in this survey is found to be AGN
dominated, with only ~13% of the sources being star
formation-dominated. The combined data also reveals
hybrid systems which may have been missed in
previous lower-resolution observations.#
Read the full paper here (N’jeri et al. 2024, MNRAS,
528, 4, 6141-6158).#
User Newsletter
Issue 6 30 April 2024!
Brightness temperatures as a function of uv
distance for different interferometers
!
SKA regional centre
webinar series starts
The UK SKA regional centre
(UKSRC) have recently launched
a seminar series to promote
SKA activities and provide
information about the UKSRC
development. The first webinars
introduced the SRC and
discussed data sharing through
FAIR principles. Future webinars
will involve science related talks
too. If you’re interested in these
areas, then you can find
information on future webinars
here. #
Getting a more PRECISE FRB
localisation with e-MERLIN+EVN
Fast radio bursts (FRBs) are bright, millisecond-
duration pulses of radio emission found at
extragalactic distances. Of these, most are seen once,
but a small fraction repeat sporadically and
infrequently. Observations of FRBs have been
performed in recent years to identify what causes the
FRB emission, with the PRECISE project using e-
MERLIN stations with the EVN to provide milli-
arcsecond localisation of active repeating FRBs.#
In the case of FRB 20220912A, it is hyper active and
contributed to a few percent of the all-sky FRB rate
above a fluence of 100 Jy ms. PRECISE observations
have subsequently pin-pointed it to an offset region
close to the centre of its host galaxy. The observations
ruled out compact persistent emission from the FRB
position. #
Read the full paper here (Hewitt et al. 2024, MNRAS,
529, 2, 1814-1826)#
e-MERLIN Cycle 18 call for
proposals
The e-MERLIN cycle 18 call for proposals has
been announced. All information can be found
here. The deadline for proposals is 13:59 UT on
Thursday 23rd May 2024 Click here to get to the
the submission portal.
The Lovell telescope on a frosty
winter’s day
www.e-merlin.ac.uk
A New PARADIGM of U/LIRG
morphology with e-MERLIN
Ultra Luminous Infrared Galaxies (U/LIRGs) are bright
infrared emitters, but their radio emission is a mixture
of AGN activity, jets and star formation in the nuclear
regions. Decoupling these individual processes to
study them separately has proven difficult and can
lead to inaccurate measurements of star formation
rates or AGN power. The PARADIGM project aims to
measure the radio emission on 10s pc-scales, thus
disentangling the emission mechanisms. #
High-resolution e-MERLIN observations together with
archival VLA data enabled two novel approaches to
characterising the emission: i) interferometric
decomposition: removing the e-MERLIN flux from the
combined e-MERLIN/VLA data to measure the
compact and diffuse flux, and ii) image
decomposition: fitting the sources with Sersic profiles
to yield effective sizes of the emission regions. This
approach provides new insights on the emission in U/
LIRGs, giving a multi-scale tracer for star formation.#
Read the full paper here (Lucatelli et al. 2024,
MNRAS, 529, 4, 4468-4499)#
Announcements
ALMA Cycle 11 Call for
Proposals. Deadline 5 June
2024. Click here for further
information #
EVN Call for Proposals.
Deadline 1 June 2024. Click
here for further information#
Meetings/Workshops
RAS NAM Hull, UK, 15-19 July
2024, Click here for more details#
European Astronomical
Society Annual Meeting 2024
Padova, Italy, 1-5 July 2024,
Click here for more details#
ORP Multi-messenger school
Durham, UK, 2-6 September
2024, Click here for more details#
Come see us at NAM!
e-MERLIN will be at the National
Astronomical Meeting (NAM)
2024 in Hull from 14-19 July
2024. Our operations team will
be in the exhibitors’ hall, We will
also be involved in a session on
SKA pathfinders for early career
researchers entitled “Era of
SKAO Pathfinders – Pushing the
Boundaries of the Radio Sky”
which will run on Monday 14
July 2024. Find out more here.
Representation of a U/LIRG