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Apr 29, 2026
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changes Alessandra and Vincenzo 04/2026 #87

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changes Alessandra and Vicenzo 04/2026
loumir Apr 29, 2026
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loumir Apr 29, 2026
e78b87f
Merge branch 'main' into rfc20260428-changes_Alessandra-Vincenzo
loumir Apr 29, 2026
a78460a
Fix formatting and improve clarity in Appendix.tex
loumir Apr 29, 2026
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95 changes: 48 additions & 47 deletions Appendix.tex
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Expand Up @@ -2,21 +2,21 @@ \section{Science use cases and translation to ADQL queries based on ObsCore Rad
\label{ADQLusecases}


\textit{ The queries in subsections \ref{sec:s_resolution_max} and \ref{sec:s_fov_min}
The queries in subsections \ref{sec:s_resolution_max} and \ref{sec:s_fov_min}
can be run with s\_resolution\_min and s\_fov\_max instead of s\_resolution\_max and
s\_fov\_min respectively, to obtain results in which at least part of the dataset satisfy the condition.\\
For instance, consider datasets with a large observed bandwidth, like those taken with wide/ultrawide band receivers.
The condition s\_resolution\_max<d\_typical may not be satisfied. At the same time, the user may want to select those
dataset where the desired condition on spatial resolution is matched at least partially within the observed band.}
The condition s\_resolution\_max < d\_typical, where d\_typical is the typical size of interest, may not be satisfied. At the same time, the user may want to select those
dataset where the desired condition on spatial resolution is matched at least partially within the observed band.

\textit{Sections from \ref{sec:instrument-mode} illustrate instrument and observing modes parameters. They must be completed by science cases.}
Sections from \ref{sec:instrument-mode} illustrate instrument and observing modes parameters.

%\subsection{Science case }
\subsection{Use case - s\_resolution\_min}
\label{sec:s_resolution_min}
\textit{Comparative study of low surface brightness extended emission surrounding compact sources, like for instance Virgo A.
In order to avoid washing out of diffuse emission the spatial resolution should not be too high.
Select any dataset map (raster or on-the-fly) with s\_resolution\_min larger than the desired spatial resolution of 1 arcmin.}
Select any dataset map (raster or on-the-fly) with s\_resolution\_min larger than the desired spatial resolution of 1 arcmin.}\\
Show me all datasets satisfying: \\
I. Minimum spatial resolution > 0.017 deg \\
II Target Virgo A or position inside 15 arcmin from 187.7059308,+12.3911232 \\
Expand All @@ -34,11 +34,11 @@ \subsection{Use case - s\_resolution\_min}

\subsection{Use case - s\_resolution\_max}
\label{sec:s_resolution_max}
\textit{Morphological study of SNR IC443. Select any dataset obtained in map scanning mode (raster or on-the-fly) with s\_resolution\_max less than the desired spatial resolution of 1 arcmin.}

\textit{Morphological study of SNR IC443. \\
Select any dataset obtained in map scanning mode (raster or on-the-fly) with s\_resolution\_max less than the desired spatial resolution of 1 arcmin.}\\
Show me all datasets satisfying: \\
I. Maximum spatial resolution < 0.017 deg \\
II Target IC443 or position inside 15 arcmin from 94.2500000,+22.5699997 \\
II. Target IC443 or position inside 15 arcmin from 94.2500000,+22.5699997

\begin{verbatim}
SELECT * FROM ivoa.obscore
Expand All @@ -56,7 +56,7 @@ \subsection{Use case - s\_fov\_min - large field of views}

Show me all datasets satisfying:\\
I. Minimum FOV > 0.8 deg \\
II Target name = Abell 194 or position inside 15 arcmin from 21.5054167, -1.3672221 \\
II. Target name = Abell 194 or position inside 15 arcmin from 21.5054167, -1.3672221
\begin{verbatim}
SELECT * FROM ivoa.obscore
NATURAL JOIN ivoa.obscore_radio
Expand All @@ -68,10 +68,10 @@ \subsection{Use case - s\_fov\_min - large field of views}

\subsection{Use case - s\_fov\_min - extended target completly included}
\label{sec:s_fov_max}
\textit{Pictor A has a typical angular extension of 8 arcminutes , select any image/cube completely containing the target}
\textit{Pictor A has a typical angular extension of 8 arcminutes, select any image/cube completely containing the target}.\\
Show me all datasets satisfying: \\
I. Target name = Pictor A \\
II. The circle defined by the minimum FOV of the dataset fully contains the circle delimiting Pictor A. \\
II. The circle defined by the minimum FOV of the dataset fully contains the circle delimiting Pictor A.
\begin{verbatim}
SELECT * FROM ivoa.obscore
NATURAL JOIN ivoa.obscore_radio
Expand All @@ -81,15 +81,13 @@ \subsection{Use case - s\_fov\_min - extended target completly included}
\end{verbatim}

\subsection{Use case - dataproduct\_type}
\textit{Select all observations of calibrator source 3C48 with the Medicina Grueff radio telescope at frequencies in the range 20-21 GHz, to investigate its flux variability (light curve) in the years 2000-2023}
\textit{Select all observations of calibrator source 3C48 with the Medicina Grueff radio telescope at frequencies in the range 20-21 GHz, to investigate its flux variability (light curve) in the years 2000-2023}.\\
Show me all datasets satisfying: \\
I. Target name = 3C 48 \\
II. obs\_collection = ?INAF-Medicina, single dish?\\
I. Target name = 3C48 \\
II. obs\_collection = "INAF-Medicina, single dish"\\
III. Observed frequency in the range 20-21 GHz \\
IV. dataproduct\_type = spatial\_profile or scan\_mode contains map\\
V. 51544 < observation time (MJD) < 60309 \\


V. 51544 < observation time (MJD) < 60309
\begin{verbatim}
SELECT * FROM ivoa.obscore
NATURAL JOIN ivoa.obscore_radio
Expand Down Expand Up @@ -120,19 +118,17 @@ \subsection{Use case - f\_resolution, frequency ranges}
\end{verbatim}

\subsection{Use case - frequency selection for images }
\textit{Any image or cube observed at frequencies below 1 GHz.}\\ \\
\textit{Any image or cube observed at frequencies below 1 GHz.}\\
Show me all datasets satisfying:\\
I. Product type is image or cube \\
II. higher spectral limit < 1Ghz
II. Higher spectral limit < 1 GHz
\begin{verbatim}
SELECT * FROM ivoa.obscore
WHERE (dataproduct_type = 'image'
OR dataproduct_type = 'cube')
AND 299792458 / em_min < 1e9
\end{verbatim}
% Mireille Louys: shall we also look for spectra with these frequency constrains ?


% Mireille Louys: shall we also look for spectra with these frequency constrains ?

% end section Alexandra's science case

Expand All @@ -142,8 +138,10 @@ \subsection{Use case - frequency selection for images }
% Should these restrict the dataproduct_type?
\subsection{Use case - high resolution data around FRB targets }

\textit{Give me high-resolution data on possible persistent radio sources within an arc second of FRB 121102:}

\textit{Give me high-resolution data on possible persistent radio sources within an arc second of FRB 121102.} \\ Show me all datasets satisfying:
% add constraints
I. Source close to FRB 121102 \\
II. Spatial resolution < 1 arcsec
\begin{verbatim}
SELECT * FROM ivoa.obscore NATURAL JOIN ivoa.obscore_radio
WHERE CONTAINS(POINT(s_ra,s_dec),CIRCLE(82.99458,33.14794,0.0003)) = 1
Expand All @@ -153,13 +151,17 @@ \subsection{Use case - high resolution data around FRB targets }
\subsection{Use case - reasonable fidelity}

\textit{Give me data on extended HI emission around the source 3C84 that can
be imaged with reasonable fidelity:}

be imaged with reasonable fidelity.}\\ Show me all datasets satisfying:
%add constraints
I. Region contains source 3C84 \\
II. Maximum angular scale > 1arcsec
III. uv plane is filled at more than 0.2
IV. Estimated uv eccentricity < 0.75
\begin{verbatim}
SELECT * FROM ivoa.obscore
NATURAL JOIN ivoa.obscore_radio
WHERE CONTAINS(POINT(s_ra,s_dec),CIRCLE(24.4212500,33.1588889,0.003)) = 1
AND s_largest_angular_scale > 0.018
AND s_largest_angular_scale > 0.017
AND uv_distribution_fill > 0.2
AND uv_distribution_ecc < 0.75
AND em_min < 0.21
Expand All @@ -168,46 +170,46 @@ \subsection{Use case - reasonable fidelity}

% end of Mark's (VLBI) science cases

\subsection{ use case - visibility data product and target object selection }
\subsection{ Use case - visibility data product and target object selection }
\textit{Any raw interferometry observation containing target Fornax cluster.}\\
\\
Show me all observation identifiers satisfying:\\
I. DataType = visibility \\
II. Target Name = Fornax Cluster \\
II. Target Name = Fornax Cluster
\begin{verbatim}
SELECT obs_id FROM ivoa.obscore
WHERE dataproduct_type = 'visibility'
AND target_name = 'Fornax cluster'
\end{verbatim}

\subsection{Use case - maximum angular scale selection}
\textit{Any visibility dataset Within an arcec around FRB 121102 where maximum angular scale is larger than 1 minute .}\\ \\
\textit{Any visibility dataset within an arsec around FRB 121102 where maximum angular scale is larger than 1 minute.}\\ \\
Show me all datasets satisfying:\\
I. Product type is visibility \\
II. Maximum angular scale > 0.018 deg \\
II. Maximum angular scale > 0.017 deg \\
III. Position within 1 arcsec of 82.99458 + 33.14794
\begin{verbatim}
SELECT * FROM ivoa.obscore
NATURAL JOIN ivoa.obscore_radio
WHERE dataproduct_type = 'visibility'
AND s_largest_angular_scale_max > 0.018
AND s_largest_angular_scale_max > 0.017
AND CONTAINS(POINT(s_ra,s_dec),CIRCLE(82.99458, 33.14794,0.0003)) = 1))
\end{verbatim}

\subsection{Use case - maximum angular scale selection with reasonable fidelity}
\textit{Any visibility data within an arcsec around FRB 121102 where maximum angular scale is larger than 1 minute and
of good quality from the uv distribution point of view.}\\ \\
\textit{Any visibility data within an arcsec around FRB 121102 where maximum angular scale is larger than 1 minute and of good quality from the uv distribution point of view.}\\ \\
Show me all datasets satisfying:\\
I. Product type = visibility \\
II. Maximum angular scale > 0.018 deg \\
II. Maximum angular scale > 0.017 deg \\
III. uv distribution filling factor > 0.7 \\
IV. uv distribtion factor eccentricity < 0.1 \\
IV. uv distribution factor eccentricity < 0.1 \\
V. Position within 1 arcsec of 82.99458 + 33.14794

\begin{verbatim}
SELECT * FROM ivoa.obscore
NATURAL JOIN ivoa.obscore_radio
WHERE dataproduct_type = 'visibilty'
AND s_largest_angular_scale_max > 0.018
AND s_largest_angular_scale_max > 0.017
AND uv_distribution_fill > 0.7
AND uv_distribution_ecc < 0.1
AND CONTAINS(POINT(s_ra,s_dec),CIRCLE(82.99458, 33.14794,0.0003)) =1))
Expand All @@ -219,10 +221,10 @@ \subsection{Use case - time selection }
I. Instrument type = beam forming\\
II. Product type = time series \\
III. time resolution < 0.1 s\\
IIV. maximal duration per sample < 0.05 s \\
IIV. maximal duration per sample < 0.05 s

\begin{verbatim}
SELECT * FROM ivoa.obscore
SELECT * FROM ivoa.obscore
NATURAL JOIN ivoa.obscore_radio
WHERE instr_type = 'beamForming'
AND dataproduct_type = 'timeseries'
Expand All @@ -237,24 +239,24 @@ \subsection{Use case - instrument type and mode selection }
I. Instrument type is Single dish \\
II. Scan mode is raster \\
III. Target name = 3C 273 or \\
IV. position inside 3 arcmin around 187.2779159404900 +02.0523882305500
IV. position inside 3 arcmin around 187.2779159404900 +02.0523882305500

\begin{verbatim}
SELECT * FROM ivoa.obscore
NATURAL JOIN ivoa.obscore_radio
WHERE instr_type = 'SD'
AND scan_mode = 'raster'
AND (target_name = '3C 273' OR
CONTAINS(POINT(s_ra,s_dec), CIRCLE(187.2779159404900, +02.0523882305500,0.05)) = 1)
CONTAINS(POINT(s_ra,s_dec), CIRCLE(187.2779159404900, +02.0523882305500,0.05)) = 1)
\end{verbatim}



\subsection{Use case - instrument type and frequency selection }
\textit{Any single dish or beam forming dataset with spectral range inside the 500 Mhz - 1Ghz band and in the Coma Cluster.}\\ \\
Show me all datasets satisfying:\\
I. Instrument type is Single dish or beam forming \\
II. lower spectral limit > 500 Mhz \\
III. higher spectral limit < 1Ghz \\
II. lower spectral limit > 500 MHz \\
III. higher spectral limit < 1GHz \\
IV. position inside 18 arcmin around 194.93502 +27.91246

\begin{verbatim}
Expand All @@ -270,12 +272,11 @@ \subsection{Use case - instrument type and frequency selection }


\subsection{Use case - instrument parameters selection }
\textit{Any interferometry data of good quality and significant spatial resolution from the instrumental point of view. }\\ \\
\textit{Any interferometry data of good quality and significant spatial resolution from the instrumental point of view. }\\
Show me all datasets satisfying:\\
I. Instrument type = visibility \\
II. number of antennae > 40 \\
III. antenna maximum distance in meters > 5000 \\

III. antenna maximum distance in meters > 5000
\begin{verbatim}
SELECT * FROM ivoa.obscore_radio
WHERE instr_type = 'interferometry'
Expand Down
2 changes: 1 addition & 1 deletion Makefile
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Expand Up @@ -7,7 +7,7 @@ DOCNAME = ObsCoreExtensionForRadioData
DOCVERSION = 1.0

# Publication date, ISO format; update manually for "releases"
DOCDATE = 2025-09-15
DOCDATE = 2026-04-29
# What is it you're writing: NOTE, WD, PR, or REC
DOCTYPE = PEN

Expand Down
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