No that's not possible... HOWEVER! This little hack in JavaScript does work.
First Add an id to the panel in XML
<panel id="something">
Then create a JavaScript file in your app folder: $SPLUNK_HOME/etc/apps/<your app>/appserver/static/drilldown.js. Include the drilldown file in your dashboard like this:
<dashboard script="drilldown.js">
Add the following to the JavaScript file:
// Components to require
var components = [
"splunkjs/ready!",
"splunkjs/mvc/simplexml/ready!",
"jquery"
];
// Require the components
require(components, function(
mvc,
ignored,
$
) {
$('#something').click(function() {
window.open(
'YOUR_DASHBOARD_HERE',
'_blank' // <- This is what makes it open in a new window.
);
});
});
