Tuesday, June 22, 2021

Women of Arecibo: Dr. Nipuni Palliyaguru

Written by Nipuni Palliyaguru

I am a radio astronomer and postdoctoral researcher at Texas Tech University and a former postdoctoral researcher
at the Arecibo Observatory. This is a personal account of my experiences. The views expressed in this article are my 
own and do not reflect those of an organization.

The first time I learned to use a radio telescope was with Arecibo. It was in January 2011, when one 
of my graduate school supervisors, Dr. Dan Stinebring took me and three undergraduate students to
Puerto Rico to observe the scintillation of apulsar.  Throughout the night, I watched the pulses of
light from the pulsar appear in real-time on an oscilloscope. Since that first night and throughout my 
graduate school career, I visited Arecibo many times for various observation trips and scientific 
meetings. From summer school for students and frequent visits from scientists from across the 
globe, the observatory maintained a rich and vibrant academic culture. 

I always wanted to work at an observatory, so, I was 
thrilled when I was offered position as a postdoctoral 
scientist at Arecibo in the fall of 2017. Secretly, I 
really wanted  to be like Ellie Harroway in the movie 
“Contact” (who’s real-life protagonist, Jill Tarter, I later had the privilege of meeting at Arecibo). Living and 
working in a predominantly Spanish speaking 
community was a new experience after years of 
working in the mainland US. I experienced a way of 
doing  science in a way that was intertwined with 
culture. There was an overall familial atmosphere within the observatory. Remarkably, over seventy percent 
of the scientific staff was female, and a large majority were women of  color, just like me. Outside, Arecibo
had instilled a sense of pride in the people of Puerto 
Rico. However, it didn’t take too long for me to 
realize that things  had drastically changed from the thriving environment I had witnessed during graduate school trips. Hurricane Maria had just hit, leaving the island with no power and water. The observatory 
was also affected by some damages to the dish, reducing its efficiency significantly. The future of Arecibo was uncertain. The staff was tired of dealing with the disheartening recommendations of divesting the telescope and anxiously awaited the impending management change. Amidst this chaos, following the hurricane, the Arecibo staff worked tirelessly to get the telescope up and running. 

Leading from the middle

In the late spring of 2018, Arecibo underwent a drastic change in management that particularly 
affected the  junior scientists at the observatory. Many of the senior staff left, crippling daily 
operations and leaving the postdocs to take on many extra observatory-level responsibilities. For 
a few months, Arecibo  was defunct academically. There were no workshops, no summer schools, 
and interaction with the rest of the world was minimal. We rarely had scientists visit for observations 
or colloquia. It was hard to perform daily duties like analyzing data and writing papers because of
the uncertainty looming over us. 

In February 2019, I, along with several other postdocs, organized an “Arecibo Futures” meeting 
to bring the management, scientists, engineers, and the local community together to talk about 
a science blueprint for the observatory spanning the next decade. The Astronomy and Astrophysics
Decadal Survey, which funding agencies use to identify transformative science and set funding 
priorities for theupcoming decade, was also happening at this time. For the survey, we submitted 
several white papers highlighting the importance of Arecibo and the role of ground-based facilities 
in terms of training the next generation of astronomers, with the hope of increasing the funding 
profile of the observatory and attracting new funders.


We also identified the need to attract new users for 
the observatory and restarted the joint Arecibo-
Green Bank single dish summer schools for 
students. About 15 undergraduate students 
attended the school to learn about how to observe 
with Arecibo. Throughout this time there were
 moments of not being taken seriously and 
undermining efforts which women of color, I am 
sure, are quite accustomed to. However, I was 
fortunate to get the support of my Ph.D. supervisor, 
Dr. Maura McLaughlin, and other well-wishers for 
my research and outreach activities and other 
ventures.

 
 
 
 
Students of Puerto Rico
 
During this time, I was thinking of ways to involve undergraduate students on the island in active 
research at the observatory since I was already working closely with the University of Puerto Rico 
(UPR) Mayaguez campus on various projects. Undergraduate students from institutions on the 
island often visited the observatory for colloquia and special seminars and there was a lot of 
interestto get actively involved, but there wasn’t a direct throughline to getting involved in 
research at Arecibo. 
In May 2019, the Arecibo receiver engineer Felix
Fernandez and I visited the UPR Mayaguez campus to
talk to students about potential research projects. 
Having laid the groundwork for potential 
undergraduate research, I worked closely with 
student groups to organize a data reduction and
science communication workshop at UPR. At 
the workshop, students learned to process Arecibo
 pulsar data. The goal of the science communications workshop was to build an island-wide network of 
trained ambassadors educating various audiences 
about astrophysical concepts.
It was heartening to see the efforts by students to 
make these workshops a success and the plans they 
made for future involvement.
 
 
 
 
Final thoughts 

At the end of summer in 2019, I left Puerto Rico for a position in the mainland U.S. because I 
wanted to focus more on my research. However, for Arecibo, the funding challenges remained. 
It was devastating to watch the collapse almost two years later. Like many others in the 
astronomy community, I mourned the loss with extreme sadness. Nonetheless, something that 
continued to amaze me is the commitment and resilience of the staff throughout those 
challenging times.
 
As for me personally, I carry the burden of being a woman of color in academia. Arecibo was 
one of the first places that challenged me to step out of my academic research comfort zone 
and get a taste of what doing research in a resource-poor environment is like. In other words, 
I owe my recent growth as a professional to Arecibo.  Even though there were many challenges, 
I am glad that at Arecibo, I found a group of supportive colleagues and the opportunity to grow
as a scientist and a community advocate.

I strongly believe that scientific research should be accessible to all, especially to those who 
have been traditionally underrepresented in the sciences. Arecibo was a symbol of pride for 
Puerto Ricans and was a source of inspiration for students. With proper resources and a vision, 
it could have pioneered untapped scientific talent in Puerto Rico. Considering Arecibo’s role in 
education and outreach, providing opportunities for minority scientists, and cultural exposures 
for the next generation of scientists in the mainland U.S and Puerto Rico, the loss of the 
telescope is unquantifiable. Therefore, it is crucial that rebuilding plans are successful. I hope 
that Arecibo will soon be on its feet again to continue its invaluable service to both astronomers 
and the citizens of Puerto Rico.

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Bio
Dr. Nipuni Palliyaguru is a postdoctoral researcher in the Department of Physics and Astronomy 
at Texas Tech University. Before joining Texas Tech, she worked as a postdoctoral researcher at 
the Arecibo Observatory and Texas Tech University.  She received her Ph.D. from West Virginia 
University where she was supervised by Prof. Maura McLaughlin. Dr. Palliyaguru’s research 
focuses on transient events in the radio sky such as supernovae, pulsars, and Fast Radio Bursts. 

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