Hi all,
We will attempt to have everyone connect through the google hangout:
https://plus.google.com/hangouts/_/be2f64a70a79d25baa54504e405197064a8fe1de…
We will also call into the telecon line through the hangout, so the audio
should be common throughout. If you don't want to use the hangout, you
should still be able to hear the conversation.
Phone: 1-866-890-3820 (toll: 1-334-323-7229) Passcode:59702175
Please try to join/call in before 9:15 so we can get started promptly.
Kirit
Dear all,
Many of you will have seen this news this morning about the security
situation and the directive from the governor and local
Cambridge/Belmont law enforcement to remain indoors until further notice.
Until we get the official "all clear", please do NOT come to the meeting
room at 160 Concord. If you are already there, please stay inside.
If/when we get the "all clear" we will arrange a new time to meet at 160
Concord.
For now, let's attempt to meet on the google hangout at 9:15.
I will also be calling in to the telecon number at that time:
Phone: 1-866-890-3820 (toll: 1-334-323-7229) Passcode:59702175
If someone (Kirit, Sam?) can figure out whether it is possible to patch
the audio from google hangout into the telecon line that may be helpful,
for those unable to join the hangout or only in broadcast mode.
John
-------- Original Message --------
Subject: Guidance to any at work this morning
Date: Fri, 19 Apr 2013 08:03:35 -0400 (EDT)
From: Brissenden, Roger <rbrissenden(a)cfa.harvard.edu>
Reply-To: Brissenden, Roger <rbrissenden(a)cfa.harvard.edu>
To: cfa-wide(a)cfa.harvard.edu
Dear Colleagues,
As you are aware from the SAO emergency alert system and Harvard
announcements, the Observatory is closed today due to the continuing
security situation related to the manhunt for the bombing suspects.
We are aware that some staff had arrived at work, or were on their way to
work before the closure announcements were made and we are glad that you
are safely at work.
Given the unfolding situation, we advise that you follow the request from
the Governor
(http://www.mass.gov/alert/alertlanding.html#1988099):
"Residents in Watertown, Newton, Waltham, Belmont, Cambridge and the
Allston Brighton neighborhoods of Boston are advised to stay in doors.
Residents should not answer the door unless it is a police officer, and are
advised to stay away from windows. All businesses in these towns will
remain closed until further notice. People should not congregate outside."
We advise that if you are at work in the Cambridge area, you to stay in the
building and monitor the media until the all clear is announced.
Please take care and be safe.
Regards,
Roger
Roger Brissenden
Deputy Director, Harvard-Smithsonian Center for Astrophysics
Manager, Chandra X-ray Center
http://www.cfa.harvard.edu/
Ph: 617-495-7387
Fax: 617-495-7411
Hi All,
For those of you who cannot join us in person, we have set up a google
hangout which will allow you to see the presentations. It can be
found here<https://plus.google.com/hangouts/_/2da4dec2e83b949946d3969f9deb2ee4f2369ea7…>.
As a reminder, you will need a google+ account in order to join.
If you would like to call in, we will be using the standard Harvard telecon
line:
Phone: 1-866-890-3820 (toll: 1-334-323-7229) Passcode: 59702175 #
-Jon
Dear all,
As many of you will have seen in the news, this afternoon there were two
explosions in downtown Boston near the Marathon finish line. Current
reports indicate that three people were killed with and more than 20
injured. As far as we have heard, no one from Harvard or otherwise
connected to the CfA has been injured.
We currently have no plans to alter the schedule for this week's
collaboration meeting at Harvard. Right now Boston Logan's website
appears to show flights landing as usual this evening. If anyone does
hear of disruptions that may impact people's arrivals tomorrow, please
let me know.
Of course we will keep you all posted if the situation evolves, and of
course our thoughts will be with the victims this evening.
John
--
___________________________________________________________________
John Kovac jmkovac(a)cfa.harvard.edu
Assistant Professor, Astronomy and Physics, Harvard University
160 Concord Ave rm 310, Cambridge MA 02138, 617-496-0611
Hi All,
For those of you who are not able to join us in person at Harvard on
wednesday through friday this week, Kirit and I will be setting up a google
hangout which will allow you to watch the presentations and join in on the
discussions via video chat. In order to join, you will need a google plus
account <https://plus.google.com>. If you do not have one and are opposed
to creating one, please let me know so I can make arrangements to broadcast
the hangout. Note that you will not be able to interact with us if you are
watching the broadcast. I do not believe that you need a webcam to join.
For presenters: we will have a dedicated laptop that you may choose to use
for your presentations which will be logged into the hangout.
There will be a link to the hangout in the meeting google doc and we will
send around an email with the link as well.
Please let me know if you have any questions or comments about the hangout.
-Jon
I plan to give a talk on BICEP1/2/Keck at the CMB2013 conference in
June. A draft abstract is below. I appreciate your comments.
Title: CMB Polarization from the South Pole: BICEP, BICEP2, and Keck Array
The BICEP (Background Imaging of Cosmic Extragalactic Polarization)
experiment has provided the best constraints on B-mode polarization at
degree angular scales so far.
Nevertheless, the current limit (r < 0.7) is three orders of magnitude from
the goal of r ~ 0.001 constraints on the tensor-to-scalar ratio.
BICEP, BICEP2, and Keck Array are a program of experiments at the South Pole
whose main goal is to demonstrate the sensitivity and systematic control
necessary
for r ~ 0.01 measurements.
This talk describes new results from BICEP and prospects for BICEP2 and
Keck. BICEP observed the CMB from the South Pole for three seasons from
2006 to 2008. The design incorporates polarization-sensitive bolometers,
a cryogenic refracting telescope, absorptive forebaffle, reflective
ground screen, fast azimuth scanning, and boresight rotation to optimize
sensitivity to the CMB polarization and minimize systematic contamination.
We published the first results from BICEP in Chiang et al. (2010) which used
only the first two seasons' data to place the best limits on inflationary
B-mode polarization.
This talk includes new results from the full three-year data as well as
analysis improvements including a new deprojection technique that removes
contamination from the dominant sources of calibration uncertainty.
BICEP2 is based on the BICEP design, but uses antenna-coupled
transition-edge sensors for improved sensitivity. BICEP2 observed from
2010 to 2012. Keck incorporates five BICEP2-style receivers with a total
of 1280 polarization-sensitive pixels. Observations began in 2011 with
upgrades in 2012 and 2013 and are expected to continue through 2016.
This talk covers the characterization and analysis status of these
experiments and planned upgrades
for Keck.
Immanuel Buder
Postdoctoral Fellow
Harvard-Smithsonian Center for Astrophysics
(office) 160 Concord Ave., M-114C
(office) 617 495 7567
(mail) 60 Garden St. MS 42
Cambridge, MA 02138
ibuder(a)cfa.harvard.edu
Hi all,
Please RSVP for next week's BICEP2 / Keck collaboration meeting (Apr
17-19) by filling in this form:
https://docs.google.com/a/cfa.harvard.edu/forms/d/1MPdyrtXoevP0jLa7mhvN3YVP…
Please respond even if you plan only to join remotely, via the Google
Hangout Jon K and Kirit are arranging. You use the same form to update
your response if your travel plans evolve.
thanks,
John
--
___________________________________________________________________
John Kovac jmkovac(a)cfa.harvard.edu
Assistant Professor, Astronomy and Physics, Harvard University
160 Concord Ave rm 310, Cambridge MA 02138, 617-496-0611
hi guys
I came across this recently...
This paper http://arxiv.org/abs/0912.2738 points out that poly filtering induces E to B leakage.
Has this been investigated for BICEP2?
-Brian
__________________________________
Brian G. Keating
Associate Professor of Physics
Center for Astrophysics & Space Sciences
University of California, San Diego (UCSD)
9500 Gilman Drive
La Jolla, CA 92093-0424
Web: http://physics.ucsd.edu/~bkeating/
Group: http://cosmology.ucsd.edu/
